Da-Chuan Xu

Nanfang Hospital, Guangzhou, Guangdong Sheng, China

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Publications (25)24.78 Total impact

  • Article: Vasculature at the medial aspect of the foot and clinical application of flaps based on it for forefoot reconstruction.
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    ABSTRACT: Detailed knowledge of the vasculature of the medial aspect of the foot has rarely been reported, but it is of tremendous importance for harvesting the flap in this area to cover defects of the foot and hand. Repair of soft-tissue defects at the dorsal forefoot remains a challenge in reconstructive surgery. The authors describe the use of the distally based saphenous neurovenofasciocutaneous flap at the medial aspect of the foot to cover this region. This study was divided into two parts: an anatomical study and clinical application. In the anatomical study, 35 cadaveric feet were injected with red gelatin, five others were made as corrosive vascular casts, and then the main vessels distributed at the medial aspect of the foot were observed. Clinically, six cases of soft-tissue defects at the dorsal forefoot were reconstructed with distally based saphenous neurovenofasciocutaneous flaps. The anatomical study showed that (1) the vasculature pattern could roughly be classified into three types and (2) there were constant anastomoses between the above-mentioned arteries around the midpoint of the first metatarsal bone. In terms of clinical application, all flaps completely survived, and one patient had partial loss of skin graft. The blood supply to the medial aspect of the foot has multiple origins, on the basis of which of several flaps can be harvested, either a pedicled or free. Of particular clinical significance is the distally based saphenous neurovenofasciocutaneous flap, which is thin, is in the immediate vicinity of the forefoot, and has a reliable retrograde blood supply. This flap should be considered as a preferential way to reconstruct soft-tissue defects of the dorsal forefoot.
    Plastic and reconstructive surgery 05/2011; 127(5):1967-78. · 2.74 Impact Factor
  • Article: Anatomical study to the vessels of the lower limb by using CT scan and 3D reconstructions of the injected material.
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    ABSTRACT: To find out the advantages and insufficiency of the 3D reconstruction and traditional anatomy by comparing them with each other. 1. Infused with the radio-opaque material from the arteries and veins, respectively, fresh lower extremity specimens were subjected to spiral CT scanning and then 3D reconstruction was conducted to obtain 3D vessels. 2. Anatomizing the specimens to show the vessel system. 3. Comparing the images of 3D reconstruction and photos of the dissected specimens. 3D software could dissect and reconstruct the bones, vessels, skin and muscles, and the reconstructed photos could be shown, respectively or combinedly. On the other hand, the course, distribution, and anastomoses of the vessels could be viewed from different aspects and different layers, but the results were not completely correct, so they were not suitable for data acquisition. While the vessel systems could be observed clearly on the dissected specimens, so could the origin, course, distribution and the anastomoses of any vessel. The data acquisition could be conducted. The method of angiography with 3D reconstruction is very good and has considerable advantages for observing the 3D state of human blood vessels, and their distribution at different angles and different levels, but it cannot totally represent or replace the traditional dissected specimens.
    Anatomia Clinica 01/2011; 33(1):45-51. · 0.93 Impact Factor
  • Article: Transoral atlantoaxial reduction plate internal fixation with transoral transpedicular or articular mass screw of c2 for the treatment of irreducible atlantoaxial dislocation: two case reports.
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    ABSTRACT: Retrospective report of two surgical cases and review of the literature. To report the clinical application of transoral atlantoaxial reduction plate (TARP) internal fixation with a novel technique of transoral transpedicular or articular mass screw of C2 in the treatment of irreducible atlantoaxial dislocation and basilar invagination with ventral spinal cord compression. Current surgical treatments for IAAD have various disadvantages, such as posterior decompression followed by atlantoaxial or occipitocervical fusion with unsatisfactory decompression, transoral decompression, and one-stage posterior instrumentation needing two approaches although with satisfactory decompression, resection of dens and/or clivus with potential risk of spinal cord injury and CSF leakeage. TARP system with a novel technique of transoral transpedicular screw or articular mass screw of C2 was designed and employed for two patients with irreducible atlantoaxial dislocation, during which one case was with basilar invagination. The histories of the cases and the novel technique of transoral articular mass screw and transpedicular screw insertion of C2 were reported in detail. The two case examples demonstrate the efficacy of this one-stage single transoral approach to the surgical treatment of irreducible anterior atlantoaxial dislocation with spinal cord compression especially in the case of basilar invagination. The role of the TARP in affecting and maintaining the reduction while promoting successful fusion is illustrated. The authors' one-stage anterior procedure employing the TARP for the surgical treatment of irreducible anterior atlantoaxial dislocation and basilar invagination was effective in these two cases. This method was able to avoid the need for dens and clivus resection and/or a posterior instrumentation and fusion procedure. The technique of transoral articular mass screw and transpedicular screw insertion of C2 was valuable for transoral atlantoaxial plate internal fixation.
    Spine 01/2011; 36(8):E556-62. · 2.08 Impact Factor
  • Article: [Three-dimensional reconstruction and anatomic variation of the portal vein based on 64-slice spiral CT data].
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    ABSTRACT: To investigate the three-dimensional reconstruction methods of the portal vein using 64-slice spiral CT data and the anatomical variation of the portal vein. Three-dimensional reconstruction of the portal vein was performed using Mimics software based on the 64-slice spiral CT data of 64 cases. Each model of the portal vein and its branches was evaluated according to the presentation rate, depiction quality and anatomic variation. The reconstructed model showed a depiction rates of 100% for the 4-grade branches of the portal vein. The stem of the portal vein and the left and right branches of the level III or above were all displayed, but in 2 cases the superior mesenteric vein and in 1 case the spleen vein was displayed only to the level IV. Of the 64 cases, 50 (78.1%) had normal portal vein and 14 (21.9%) showed anatomical variations. The 3D model vividly mimics the anatomic variations of the portal vein to provide valuable information for surgical plans.
    Nan fang yi ke da xue xue bao = Journal of Southern Medical University 01/2011; 31(1):121-4.
  • Article: Anatomical study of position of the rib head for placing anterior vertebral body screws in a chinese population.
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    ABSTRACT: In this study, the variability of rib head position in a Chinese population in terms of the spinal canal and vertebral body was analyzed using computed tomography (CT). Images from transverse CT scan of the T4 to T12 vertebral bodies of 30 normal individuals were 3-dimensionally reconstructed, and analyzed for measurement of parameters that define the relative anatomic position of the rib head. We have found that the distance between the anterior border of the rib head and the posterior margin of the vertebral body, posterior safe angle, and the distance between the most inferior border of the rib head and inferior end plate in the sagittal plane gradually decrease. However, the distance between the anterior boarder of the rib head and the anterior margin of the vertebral body, transverse dimension, anterior safe angle, and the distance between the most inferior border of the rib head and superior end plate in the sagittal plane gradually increase from T4 to T12. This indicates that the position of the rib head is oriented from a more anterior position to a more posterior position and from a more superior position to a more inferior position as the number of the vertebra increases, which is different from what has been reported from western populations. Our study has identified useful parameters to define the position of the rib head, and provides a comprehensive reference guide for accurate and safe instrumentation of vertebral body screws in treating related spine diseases.
    Orthopedics 12/2010; 33(12):884. · 2.66 Impact Factor
  • Article: Anatomy of the transversus nuchae muscle and its relationship with the superficial musculoaponeurotic system.
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    ABSTRACT: Previous studies have proved the existence of muscle fibers in the superficial musculoaponeurotic system (SMAS) of the parotid and masseter region; however, no studies have investigated the origination of the muscle fibers in the SMAS. Theoretically speaking, the muscle fibers within the SMAS in the parotid and masseter region might originate from a certain muscle with a definite origin and insertion. Based on this hypothesis, the authors' study investigated the origination of the muscle fibers in the SMAS of the parotid and masseter region to provide anatomical evidence that can improve our understanding of the SMAS. An anatomical study was performed on 20 halves of seven fixed and three fresh adult cadavers (seven male and three female cadavers). A traditional bilateral face-lift incision was designed in each cadaver, and the muscle fibers within the SMAS in the parotid and masseter region, along with the origin and insertion, were investigated, dissected, analyzed, and photographed. The transversus nuchae muscle can be divided into two sections according to the origin of its tendons. The muscular fasciculi of the two sections run transversely across the sternocleidomastoid muscle, insert into the superficial fascia above the parotidomasseteric fascia, and terminate in the zygomatic region. The muscle fibers within the SMAS in the parotid and masseter region come from the transversus nuchae muscle. The authors' study first investigated the transversus nuchae muscle combined with the SMAS and clarified the issue that has been neglected by previous studies for more than 30 years. The authors hope this will unify their understanding of the SMAS and offer plastic surgeons and readers a brief insight into the SMAS.
    Plastic and reconstructive surgery 09/2010; 126(3):1058-62. · 2.74 Impact Factor
  • Article: Measurement and analysis of the perforator arteries in upper extremity for the flap design.
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    ABSTRACT: The aim of this study was to provide the anatomical basis for the skin flap pedicled with the nutrient vessels of the cutaneous nerves and cutaneous veins of the upper extremity. Radio-opaque material was injected into the common carotid arteries of five fresh cadavers. The skin and the fascia were meticulously dissected, removed, and radiographed. The Photoshop CS and Scion image 4.02 were used to analyze the cutaneous arteries, the density of vessels, and the vascular territories of the perforator arteries. The results showed that the cutaneous arteries of the upper extremity came from 16 original arteries, and accordingly, the superficial tissue of the upper extremity could be divided into 16 vascular territories. The external diameter and the area of blood supply of each perforator were growing downwards from the proximum to the distal end. But the points at which the perforator arteries came out from the deep tissue were concentrated near the cutaneous nerves and cutaneous veins, and the arteries formed vascular chains. The density of the arteries near the cutaneous nerves and cutaneous veins was much higher than that of other areas. This article discussed the regularity of the nutrient vessels of the cutaneous nerves and veins on the basis of the experimental results.
    Anatomia Clinica 05/2009; 31(9):687-93. · 0.93 Impact Factor
  • Article: Demonstration of three injection methods for the analysis of extrinsic and intrinsic blood supply of the peripheral nerve.
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    ABSTRACT: The use of free vascularized nerve grafts requires an intimate and accurate knowledge of the blood supply of peripheral nerve. This study was designed to compare the advantages and disadvantages of three methods employed to reveal the blood supply of the peripheral nerve, and to provide morphological basis for vascularized nerve grafts. The blood supply of brachial plexus and its main branches (ulnar, median, radial, musculocutaneous and axillary nerve) were observed using three vascular injection techniques: three specimens were injected with red latex through the thoracic aorta; two side specimens were injected with a Chinese ink solution, through the subclavian artery, for diaphanization and histology; one fresh cadaver was injected with the gelatin-lead oxide mixture through the femoral artery for radiography. The blood supply of the brachial plexus and its main branches was well examined using the three different vascular injection techniques. Perfusion with red latex exposed the extrinsic blood supply. Diaphanization and histology showed the intrinsic blood supply, while gelatin-lead oxide injection technique interactively displayed both the intrinsic and extrinsic blood supply to the peripheral nerve. The standard method for the study of the extrinsic blood supply to the peripheral nerve is the red latex perfusion; diaphanization and histology are very suitable to study the intrinsic blood supply of the peripheral nerve; while gelatin-lead oxide technique is the standard for visualization of the integral topography of the blood supply of the peripheral nerve.
    Anatomia Clinica 04/2009; 31(8):567-71. · 0.93 Impact Factor
  • Article: [The nasal development after one-staged correction of nose deformity and unilateral complete cleft lip in infancy].
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    ABSTRACT: To introduce one-staged correction of nasal deformity and unilateral complete cleft lip in infancy and to observe the nasal development after the operation. The unilateral complete cleft lip and nasal deformity were corrected in one stage in27 cases. They were followed up for several years. With post-operative photos, the anthropometric method was used to analyze the nasal development. The long-term results were excellent in 10 cases, good in 14 cases, and poor in 3 cases. Based on the anatomic findings of nasal blood supply, one-staged correction of nasal deformity and unilateral complete cleft lip in infancy can be performed with no obvious interference with nasal development. The secondary nasal deformity before school age can be alleviated or avoided.
    Zhonghua zheng xing wai ke za zhi = Zhonghua zhengxing waike zazhi = Chinese journal of plastic surgery 04/2009; 25(2):89-92.
  • Article: An overview of skin flap surgery in the mainland China: 20 years' achievements (1981 to 2000).
    Shi-Min Chang, Chun-Lin Hou, Da-Chuan Xu
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    ABSTRACT: Microsurgical anatomy and clinical applications have been widely and extensively practiced throughout the mainland of China since late 1970s. During the 1980s to 1990s, Chinese surgeons and anatomists developed many new flap donor sites and modifications, most of which were published in Chinese literature. These achievements were not fully realized by the Western surgeons. In this overview, we attempt to give a brief introduction of these contributions made by the Chinese authors in the mainland. Of the new flaps first or independently described by the Chinese, most were in the limbs. These flaps can be classified into three categories. First are free flaps with a main artery trunk, such as the radial forearm flap with radial artery, the medial leg flap with posterior tibial artery, and lateral leg flap with peroneal artery. Second are reverse-flow island flaps based on distal main vascular bundles (e.g., the radial artery and venae comitantes, the ulnar, the posterior tibial, and the peroneal arteries). Third are septocutaneous perforator flaps that avoid sacrifice of the main artery trunk, which include the anterolateral thigh flap, lateral lower-leg flap, dorsoulnar flap, distally adipofascial pedicled radial forearm flap, and so on.
    Journal of Reconstructive Microsurgery 04/2009; 25(6):361-7. · 1.43 Impact Factor
  • Article: Three-dimensional visualization of pelvic vascularity.
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    ABSTRACT: The aim of this study was to establish a 3D digitized model of pelvic vasculature for anatomic study, preoperative planning, and virtual reality. Three adult fresh cadavers were perfused with carboxymethyl cellulose/lead oxide mixture to mark blood vessels, and subjected to multilayer spiral computed tomography scanning to obtain a series of thin sections. Then, the 2D images of the pelvis and pelvic blood vessels were transformed into 3D digitized models using Mimics 11.0. The 2D images of carboxymethyl cellulose/lead oxide filled arteries had the features of entire outline and few constructed defects. The 3D digitized models of the pelvis and pelvic artery system displayed spatial location and the adjacent relationship of arteries with the pelvis. Not only the well-known arteries but also the tiny blood vessels in the reconstructed structures were well demonstrated and observed interactively. The reconstructed tissue flaps, including a lobulated skin flap with the pedicle of superficial epigastric artery, and an iliac flap with the pedicle of deep iliac circumflex artery, demonstrated their blood supply area. This indicated that the modified technique of vascular perfusion with carboxymethyl cellulose/lead oxide and reconstitution with Mimics 11.0 software contributed to 3D digitized model of pelvic vasculature.
    Surgical and Radiologic Anatomy 08/2008; 30(5):437-42. · 1.06 Impact Factor
  • Article: The topographical relationships and anastomosis of the nerves in the human internal auditory canal.
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    ABSTRACT: The anatomy of the nerves in the human internal auditory canal (IAC) has been reported by a number of authors, and there are some differences among the viewpoints of the literatures. With the development of the microsurgery and endoscopic surgery in the IAC, the study of the topographical relationship of the nerves in the human IAC becomes more and more important. The purpose of this study was to investigate the anastomosis and topographical relationship of the nerves in the human IAC. In this study, we dissected 30 human temporal bones from 15 heads, and examined the topographical relationship and the anastomosis of the nerves in human IAC. (1) In 11 out of 30 cases (37%), the facial nerve is anterosuperior to the vestibulocochlear nerve through the whole IAC; and for the remaining 19 cases (63%), the facial nerve rotates anteroinferiorly at an angle ranging from 30 degrees to 90 degrees , which is in the same direction as that of the cochlear. (2) Vestibulofacial nerve anastomosis occurs in 25 cases (83%), of which 67% appears near the porus acusticus, and of which 33% appears between the lateral and intermedial portion of IAC. The diameter was about 0.5-1 mm. (3) Vestibulocochlear anastomosis occurs in 24 cases (80%) among which, some brush-like nerve fiber bundles of the cochlear nerve were seen to enter the acculus proprius directly in 13 cases. Transverse vestibulocochlear anastomosis in the fundus of internal acoustic meatus occurred in 15 cases, including two cases with more anastomosis. No vestibulocochlear nerve anastomosis was found in six cases in this study. Our study shows that the Vestibulofacial nerve anastomosis and the vestibulocochlear nerve anastomosis do exist, and some variations appear due to individual differences. The appearance of the facial and vestibulocochlearnerves is variable but follows certain consistent patterns.
    Surgical and Radiologic Anatomy 06/2008; 30(3):243-7. · 1.06 Impact Factor
  • Article: Lateral retromalleolar perforator-based flap: anatomical study and preliminary clinical report for heel coverage.
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    ABSTRACT: Repair of heel soft-tissue defects remains a challenging problem in reconstructive surgery. The distally based sural neurofasciocutaneous flap is among the flaps of choice for coverage of this difficult region. The authors describe a modified lateral retromalleolar perforator-based neurocutaneous flap with a lower pivot point. This study was divided into two parts: anatomical study and clinical application. In the anatomical study, 12 cadavers were injected with red gelatin, and all fasciocutaneous perforators between the lateral malleolus and Achilles tendon (called the lateral retromalleolar space) were identified. Clinically, based on the anatomical study, five cases of heel soft-tissue defects were reconstructed with the modified lateral retromalleolar perforator-based sural neurofasciocutaneous flap. The anatomical study showed that there are usually two to three retromalleolar cutaneous perforators arising from the terminal part of the peroneal artery in the lateral retromalleolar space. Their outer diameters range from 0.1 to 0.8 mm. A direct venous communicator, usually accompanied by the larger perforator, connected the superficial lesser saphenous vein and the deep peroneal venae comitantes. Five patients with heel soft-tissue defects were treated with flaps ranging from 3 x 6 cm to 5 x 12 cm. The distal pivot point was designed at 1 to 3 cm above the tip of the lateral malleolus. All flaps survived without complications. The lateral retromalleolar perforator is predictable and reliable for the design of a lower pivot point, distally based sural neurocutaneous flap. The procedures are simple and rapid, and the flap can be rotated easily without dog-ear deformity. This flap should be considered among the preferred flaps for heel reconstruction.
    Plastic and reconstructive surgery 10/2007; 120(3):697-704. · 2.74 Impact Factor
  • Article: [Evaluation of perioperative blood loss following total knee arthroplasty].
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    ABSTRACT: To evaluate perioperative occult blood loss following total knee arthroplasty (TKA). A retrospective analysis of 40 patients undergoing TKA was conducted to calculate the mean blood loss and occult blood loss according to Gross formula. The mean total blood loss was 1538 ml in these cases with occult blood loss of 791 ml. In patients with autologous blood transfusion, the mean total blood loss was 1650 ml with occult blood loss of 786 ml. In patients without autologous blood transfusion, the mean total blood loss was 1370 ml with occult loss of 798 ml. TKA often results in large volume of occult blood loss in the perioperative period which can not be fully compensated by autologous blood transfusion, and additional blood supply is needed for maintenance of the circulating volume.
    Nan fang yi ke da xue xue bao = Journal of Southern Medical University 12/2006; 26(11):1606-8.
  • Article: [Anatomic study of the hypoglossal nerve in hypoglossal-facial nerve anastomosis].
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    ABSTRACT: To determine the optimal position of hypoglossal nerve in hypoglossal-facial nerve anastomosis and the eligibility of hypoglossal-facial nerve anastomosis with the cervical loop. The cervical course and adjacent structures of the hypoglossal nerve were observed on 21 adult cadavers. The hypoglossal nerve and facial nerve were taken from 3 fresh specimens, and the number of the fasciculus and the cross-sectional area of the nerve were measured. The facial nerve trunk were monofascicular with a cross-sectional area of 5.1-/+0.2 (range 4.6-5.7) mm(2). The number of the fasciculus and the cross-sectional areas of the nerve trunk and the fasciculus were 1.6-/+0.8 (range 1-4) mm(2) , 7.5-/+0.7 mm(2) (range 6.8-8.0) mm(2), and 4.7-/+0.6 (4.1-5.5) mm(2), respectively, at the proximal segment of the hypoglossal nerve, 3.6-/+0.5 (1-5) mm(2) , 5.6-/+0.5 (4.9-6.1) mm(2) , and 1.6-/+0.4 (0.9-2.2) mm(2) at the distal segment, and 2.4-/+0.8 (1-3) mm(2), 1.1-/+0.7 (0.6-2.2) mm(2), and 0.5-/+0.3 (0.3-1.2) mm(2) at the cervical loop. The cervical loop is inadequate for facial nerve anastomosis and the proximal segment is large enough to allow partial harvesting of the hypoglossal nerve for neurotisation of the facial nerve.
    Nan fang yi ke da xue xue bao = Journal of Southern Medical University 06/2006; 26(5):659-60, 663.
  • Article: [Pelvic artery representation on three-dimensional reconstructed multislice spiral CT images: variability between the young and the elderly].
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    ABSTRACT: To analyze the variability in pelvic artery representation on three-dimensional reconstructed multislice spiral CT images between young adults and the elderly. Eight young adult volunteers from the medical staff and 8 elderly people undergoing regular coronary artery examination, who were all free of coronary artery disease and diabetes mellitus, were enrolled in this study. After administration of the contrast agent through the median cubital vein at 3.5 ml/s, the subjects underwent contrast-enhanced CT angiography of the pelvic arteries utilizing a 16-row multislice spiral CT. The images were collected and processed with volume reconstruction (VR) technique for three-dimensional reconstruction to distinguish the arteries and their branches. Good visualization of the pelvic artery was observed on the reconstructed CT images of the young subjects, which revealed in detail up to the third- and even the fourth-order vessels, and the arteries were smooth and had plenty of branches; but in the elderly only the second- or third-order vessels were shown, and the arteries appeared stiff with only a few branches. Compared with the young adults, the elderly have generally poor visualization of the pelvic arteries on three-dimensional reconstructed multislice spiral CT images possibly in association with atherosclerosis and the functional deterioration of the blood vessels in the latter, which is relative to vascular morphologic changes, suggesting the necessity of studying the pelvic vessels with developmental and functional methods.
    Nan fang yi ke da xue xue bao = Journal of Southern Medical University 06/2006; 26(5):670-3.
  • Article: [Anatomic evaluation the entry point of C2 pedicle screw].
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    ABSTRACT: To study the relevant position of C(2) pedicle to C(2) inferior articular process, set up a technique of C(2) pedicle screw placement with the inferior articular process of axis as an anatomic landmark. Fifty C(2) bone specimens were used to measure the distance from the sagittal midline to the medial border, the midpoint and the lateral border of C(2) inferior articular process or C(2) pedicle; the width and the height of the C(2) pedicle were also evaluated. The anatomic relation between the measurements data of C(2) pedicle and that of C(2) inferior articular process were analyzed, and the technique of C(2) pedicle screw fixation was established. The medial border of C(2) inferior articular process was averaged (3.67 +/- 0.41) mm lateral to that of C(2) pedicle, and the midpoint C(2) inferior articular process was averaged (1.15 +/- 0.44) mm lateral to the lateral border of C(2) pedicle, respectively. Using the C(2) inferior articular process as landmark, two techniques was established for C(2) pedicle screw placement. The entry point of method A was located in 2 mm medial and superior to the central point of C(2) inferior articular process; the entry point of method B was at the crossing point of the medial border C(2) inferior articular process with the superior quarter of C(2) inferior articular process. There is a steady anatomic relation between C(2) pedicle and C(2) inferior articular process, the C(2) inferior articular process could be as a convenient key anatomic landmark to determine the location of C(2) pedicle and the position of C(2) pedicle screw entry point.
    Zhonghua wai ke za zhi [Chinese journal of surgery] 05/2006; 44(8):562-4.
  • Article: [Rotational malalignment causing patellofemoral complications after total knee replacement].
    Ji-wei Luo, Cun-tai Yu, Jian Qin, Da-chuan Xu
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    ABSTRACT: To study the rotation of femoral component and tibial component with CT and evaluate the relationship between patellofemoral complications and rotational alignment of the components. Thirty patients with isolated patellofemoral complications after total knee arthroplasty were compared with 20 patients with well functioning total knee replacements free of patellofemoral complications. The epicondylar axis and tibial tubercle were used as references on CT scans to quantify the rotational alignment of the femoral and tibial components. Patients with patellofemoral complications had excessive combined (tibial plus femoral) internal component rotation, which was directly proportional to the severity of the patellofemoral complications. Mild combined internal rotation (1 degree-4 degrees) was correlated with patellar and lateral tracking tilting, moderate rotation (3 degrees-8 degrees) with patellar subluxation, and severe rotation (7 degrees-17 degrees) with early patellar dislocation or late patellar prosthesis failure. The control group had combined external rotation of 10 degrees-0 degree. The direct correlation of combined internal component rotation to the severity of the patellofemoral complication suggests that internal component rotation may be the predominant cause of patellofemoral complications in patients with normal axis alignment. CT scans can be used intraoperatively and postoperatively to determine whether the rotational malalignment is present to require revision of one or both components.
    Nan fang yi ke da xue xue bao = Journal of Southern Medical University 03/2006; 26(2):217-9.
  • Article: The frontal-temporal nerve triangle: a new concept of locating the motor and sensory nerves in upper third of the face rhytidectomy.
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    ABSTRACT: How to avoid damage to the temporal branch of the facial nerve has long been a central topic of discussion. Recently, damage to the supraorbital nerve, the auriculotemporal nerve, and other branches of the trigeminal nerve divisions has attracted much attention. Focusing on frontal and temporal rhytidectomy, the authors have investigated the course and distribution of the facial nerve branches, the supraorbital nerve, the auriculotemporal nerve, and other branches of trigeminal division. In this article, they present the concept of the frontal-temporal nerve triangle; its contents, vicinity, and clinical significances are discussed. An anatomical study was performed using 30 temporal-parietal regions of 10 fixed adult cadavers and five fresh cadavers. A step-by-step dissection from the superficial layer to the deep layer was involved; all the measurement data were analyzed, and the mean and standard deviation were calculated and expressed in centimeters. The frontal-temporal nerve triangle is an approximately triangular area formed by the temporal branch of the facial nerve, the supraorbital nerve, and the auriculotemporal nerve. Together with its contents and vicinal structures, it forms a complicated three-dimensional rather than two-dimensional structure. Anatomical structures closely associated with rhytidectomy are located in or near this area. Acting as the anatomical body surface landmark for preoperatively locating the temporal branch, the supraorbital nerve, the auriculotemporal nerve, and its related structures, the concept of the frontal-temporal nerve triangle has practical significance in designing incisions and selecting planes of dissection in upper third of the face rhytidectomy.
    Plastic and reconstructive surgery 03/2006; 117(2):385-94. · 2.74 Impact Factor
  • Article: Using the frontal branch of the superficial temporal artery as a landmark for locating the course of the temporal branch of the facial nerve during rhytidectomy: an anatomical study.
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    ABSTRACT: Previous studies have proposed that the frontal branch of the superficial temporal artery could be used to determine the course of the temporal branch of the facial nerve; however, these studies have not documented this relationship. The objective of this study was to thoroughly examine the courses of the frontal branch and temporal branch in the temporal region and to describe their relationship in detail. The operating technique used to avoid damaging the temporal branch in the rhytidectomy also is discussed. An anatomical study was performed on 30 temporoparietal regions from 10 fixed adult cadavers and five fresh cadavers. Twenty halves of head-vascular-cast specimens also were observed. Depending on whether the bifurcation point of the superficial temporal artery is superior or inferior to the horizontal line of the superior orbital rim, the frontal branch can be classified as having a high-location or low-location type. The temporal branch and its terminal twigs run deeper into the superficial temporal fascia and are inferior to the frontal branch in the high-location type. In the low-location type, one or more terminal twigs of the temporal branch interweave with the frontal branch above the horizontal plane of the upper orbital rim and terminate below the frontal eminence. The temporal branch locates within a triangular area formed by the lower aspect of the zygomatic arch, the frontal branch, and the vertical line where it crosses the highest point of the frontal eminence The frontal branch can be the anatomical landmark used to locate and protect the temporal branch during rhytidectomy.
    Plastic and reconstructive surgery 09/2005; 116(2):623-9; discussion 630. · 2.74 Impact Factor

Institutions

  • 2006–2011
    • Nanfang Hospital
      Guangzhou, Guangdong Sheng, China
    • Guangzhou First People's Hospital
      Guangzhou, Guangdong Sheng, China
  • 2009
    • Tongji Medical University
      Shanghai, Shanghai Shi, China
    • University of South China
      Hengyang, Hunan, China
  • 2003
    • Southern Medical University
      • Department of Plastic Surgery
      Guangzhou, Guangdong Sheng, China