Sadao Tsukada

Kanazawa Medical University, Kanazawa-shi, Ishikawa-ken, Japan

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Publications (29)40.69 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Repair of complete syndactyly by a combination of tissue expansion and composite grafts from the glabrous non-weight bearing areas of the foot has been performed on three syndactylies in two patients. The commissure and the lateral areas of the proximal and middle phalanges were covered with expanded skin and the separated fingertips were covered with composite grafts. Without using an ordinary skin graft, this method can provide aesthetically excellent results with good skin colour and texture.
    British Journal of Plastic Surgery 10/1995; 48(6):396-400. · 1.29 Impact Factor
  • Naotaka Ishikura, Sadao Tsukada
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    ABSTRACT: Many cases of successful replantation of fingertips have been reported; however, it still remains difficult for an inexperienced surgeon to anastomose very small vessels (especially veins of the fingertip) because their walls and lumina cannot be clearly defined. The authors report a simple method which is useful for anastomosis of small vessels. A colored silicone background is cut into a small, thread-like segment, and both ends are tapered. This segment is then introduced into the vessel lumen to serve as a vascular stent. The silicone vascular stent makes it easy to identify the vessel lumen and then to suture the vessel edges. It also prevents a through-stitch, the most common cause of anastomosis failure with small vessels. The silicone vascular stent is removed before the last suture is tied. This technique has been used for suturing small veins in the finger pulp or small arteries in zone I, and it will be most helpful for the inexperienced microsurgeon.
    Journal of Reconstructive Microsurgery 04/1995; 11(2):141-3. · 1.01 Impact Factor
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    ABSTRACT: A free medialis pedis flap was used to repair skin defects of the fingers and hand in five patients, the flap sizes ranging from 2 x 3 cm to 5 x 10 cm. Four flaps survived completely, but the largest flap turned necrotic along the dorsal margin, which is thought to have resulted from an incorrect flap alignment. A free medialis pedis flap possesses several advantages: (1) It is very thin in comparison with other standard free flaps; (2) it can be used for small repairs, unlike many conventional free flaps; (3) it possesses two draining venous pathways, the vena comitans and the subcutaneous veins; (4) the diameters of its vessels are similar to those of the fingers; (5) it provides a good color and texture match for finger repairs; and (6) a good recovery of protective sensation is achievable, probably due to its thinness. However, this flap also has some disadvantages: A skin graft is usually required for donor-site closure, and it cannot be used as a sensory flap.
    Plastic &amp Reconstructive Surgery 02/1995; 95(1):100-7. · 3.33 Impact Factor
  • Koji Murata, Naotaka Ishikura, Sadao Tsukada
    Nishi Nihon Hifuka 01/1995; 57(5):978-982.
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    ABSTRACT: The anterior skull base of a patient with a craniofacial cleft with naso-ethmoidal encephalocele was reconstructed using temporo-parietal and frontal galea-pericranial flaps and free cranial bone grafts, to prevent meningitis caused by trans-nasal infection. The patient had frequent episodes of meningitis before surgery, however, no episodes of meningitis have been observed up to 1 year postoperatively.
    Journal of Cranio-Maxillofacial Surgery 07/1994; 22(3):144-6. · 2.60 Impact Factor
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    ABSTRACT: The superficial temporal vein and retromandibular vein were used as a guide to expose facial nerve branches in the parotid gland, and this procedure was applied to open reduction of mandibular condyle fractures (14 patients) and to superficial parotidectomy (6 patients). The advantages of this method are as follows: It is very easy to identify the superficial temporal vein as a guide, and it produces very little surgical stress because the procedure for exposing the facial nerve branches through the course of the vein is the same as the procedure for exposing the condyle and elevating the superficial lobe of the parotid gland.
    Annals of Plastic Surgery 04/1994; 32(3):295-9. · 1.46 Impact Factor
  • Nishi Nihon Hifuka 01/1994; 56(4):744-748.
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    ABSTRACT: ABSTRACT Currently, clefts of the lip, alveolus, and palate are thought to be the most common congenital malformations. In this study, we examined 1,565 cases of clefts we treated over the last 18 years, in order to summarize the clinical features and to evaluate the treatment outcomes.This study involved 589 cleft lip (CL) cases, 576 cleft lip and palate (CLP) cases, 286 cases of cleft palate (CP), 81 cases of submucous CP and 33 cases of CL and submucous CP. The familial incidence was 11.1% (174 cases). Overall, the average incidence of associated congenital abnormalities was 27.9%. Approximately half of the patients with CP alone or with submucous CP were found to have additional congenital malformations. Standeard surgical techniques for unilateral and bilateral CL cases were the Skoog's and Millard's methods, respecively, which resulted in satisfactory outcomes. As a primary operation for CP, pushback procedure was performed using a partial mucosal flap from the palate. Using this procedure 96.5% of 455 cases achieved satisfactory nasopharyngeal closure. The main objective in the treatment of CL patients is not only the repair of growing tissues but also appropriate morphological, functional and psychological reconstruction for the purpose of correcting growth inhibitory problems caused by anatomical malposition.Surgical procedures for CP patients are designed to meet several needs: correction of anatomical abnormalities of the palate and pharynx, achievement of proper nasopharyngeal closure necessary for normal phonation, prevention of growth disturbances of the maxilla, improvements in hearing and auditory tube function, and normalization of occlusion.
    Congenital Anomalies 11/1993; 33(4):345 - 355.
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    ABSTRACT: Selective damage of epidermal pigment cells induced by 504 nm pulsed dye laser at different pulse durations and fluence on black pig skin was examined electron microscopically. Epidermal melanosomes were satisfactorily disrupted at shorter pulse duration (100 ns). Epidermal blister formation and necrosis were seen at 2 days postirradiation, and reepithelization was evident at 7 days postirradiation in all specimens. Repigmentation was evident 21 to 56 days after irradiation. Histological pigmentary incontinence was evident at 2 days and persisted until 56 days postirradiation. This phenomenon was observed more frequently in skin exposed to longer pulse duration and at low fluences. Optimal parameters required to induce epidermal melanosome disruption using the 504 nm pulsed dye laser will be discussed.
    Proceedings of SPIE - The International Society for Optical Engineering 06/1991; · 0.20 Impact Factor
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    ABSTRACT: Two cases of DNA autosensitivity in Japanese sisters are reported. Both patients developed painful ecchymoses and other bleeding disorders. Skin tests with autologous leukocyte lysates and calf thymus DNA produced intermediate-type reactions that were identical to spontaneous skin reactions. Pretreatment of DNA with either DNase or chloroquine sulfate inhibited these reactions. Our studies suggest that anti-DNA antibodies might contribute to the clinical symptoms of this disorder.
    Arthritis & Rheumatology 03/1990; 33(2):287-92. · 7.87 Impact Factor
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    ABSTRACT: The facial position and balance of eyes, nose, and mouth in typical Japanese individuals were investigated, based on the golden proportion for each of these relationships. We found that Japanese tend to have a longer upper lip and shorter chin length compared with Caucasians. We believe that this tendency represents a general facial characteristic of the Oriental population. Each ratio obtained from determinations by our method was used for preoperative and postoperative aesthetic analysis in maxillofacial surgery. This method is considered useful because it permitted us to understand quantitatively the positional relationship and the balance of eyes, nose, and mouth in the face and to make comparisons with typical subjects.
    Annals of Plastic Surgery 12/1989; 23(5):417-25. · 1.46 Impact Factor
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    ABSTRACT: Successful digit replantations in aged patients are reported. Seven males and one female (eight patients with nine fingers in total), ranging in age from 65 to 74 years (71 years on average), were treated. Five fingers were replanted, and the take was very good. Although restored function in the replanted fingers was poor, the patients were satisfied with the results. There is some consensus that, since an immovable finger obstructs the function of the other normal fingers, it is better to sacrifice the digit, a solution often considered in male laborers in the prime of life who use their fingers extensively. However, in the case of aged patients, it is not as necessary to provide ingenious solutions, as it might be for young patients. Whether or not replantation is carried out should be determined after careful consideration of patient status and desire, and after extensive explanation about the postoperative condition of their fingers.
    Journal of Reconstructive Microsurgery 11/1988; 4(5):351-7. · 1.01 Impact Factor
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    ABSTRACT: Case histories of a 12-year-old boy and a 20-year-old woman with hyperostosis of the frontoparietal bones are presented. Microscopical examination of the lesions showed intraosseous lipoma with hyperostosis of diploƫ. In both cases, only the prominent part of the tumor was removed for cosmetic reasons. The results were satisfactory, and there was no evidence of recurrence over a period of six years.
    Annals of Plastic Surgery 02/1987; 18(1):74-80. · 1.46 Impact Factor
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    ABSTRACT: We report the articulation results in 87 4-year-old children with overt cleft palates who had been repaired at age 1 by the same surgeon and were found to have no factors obstructing their speech-language development. We further present data on developmental courses before age 4 in 81 subjects and after age 4 in 64 subjects. Forty-five of the 87 subjects showed normal articulation: 24 had already acquired normal speech sounds and 21 were still in the course of normal development. In this group only 1 patient showed incompetent velopharyngeal closure. Abnormal articulation was found in 42, among whom only 4 showed incompetent velopharyngeal closure. The most common abnormal articulatory type was palatalized articulation (70%), which had been seldom found in earlier studies. Palatalized articulation showed less of a tendency to correct itself spontaneously than did glottal stops. Abnormal articulation improved spontaneously after 4 years of age in some subjects. The significance of detailed postsurgical follow-up and the necessity of accumulation of more data are emphasized.
    Annals of Plastic Surgery 12/1985; 15(5):415-22. · 1.46 Impact Factor
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    ABSTRACT: Rudimentary polydactyly was found in five patients. Surgical exploration of the papules revealed findings that have not been previously published. A cord-like structure arises from the bottom of the papule, with its proximal portion joining the neurovascular bundle of the digit. Histologic examination of the cord showed strong similarity to the neurovascular bundle of a finger. From these findings, we assume that rudimentary polydactyly may represent the amputation stump of pedunculated fingers.
    The Journal Of Hand Surgery 06/1985; 10(3):382-5. · 1.66 Impact Factor
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    ABSTRACT: An unusually high division of the median nerve in the forearm is reported. Recognition of this anatomical variation can help plastic surgeons make the proper diagnosis when encountering an incomprehensible clinical sign in the vicinity of the median nerve.
    Annals of Plastic Surgery 02/1985; 14(1):74-6. · 1.46 Impact Factor
  • T Okada, Y Yasuda, Y Kitayama, S Tsukada
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    ABSTRACT: A case involving medial calf, free cutaneous flap based on the posterior tibial artery for one-stage reconstruction of soft tissue and main vessel damage is presented. Flap anatomy is outlined, and operative techniques for transfer are detailed, in a case of deep contact burn of an arm.
    Journal of Reconstructive Microsurgery 08/1984; 1(1):25-9. · 1.01 Impact Factor
  • S. Tsukada, Y. Yasuda, H. Hayashi
    Journal of Burn Care & Rehabilitation 01/1984; 5(1):55-57. · 2.42 Impact Factor
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    ABSTRACT: Four cases of Kaposi's varicelliform eruption (KVE) complicating burns are described. Two of these were classified as clinically mild, the remaining two as severe. In the latter two patients, high fever developed abruptly, with worsening of the general condition during the clinical course of the burn. In comparison, no aggravation was seen of either the general or local findings in the two patients with mild cses. The burned area was 5% of the body surface area (BSA) in the two mild cases and 30% and 35% of the BSA, respectively, in the two severe cases. In six patients in a series reported by other authors, the burned area ranged from 44% to 77% of the BSA, and all of the burns were classified clinically as severe. Taking these facts into account, it is concluded that the seriousness of KVE may correspond to the extent of the burned area. (C)1984The American Burn Association
    Journal of burn care & research: official publication of the American Burn Association 12/1983; 5(1). · 1.55 Impact Factor
  • Yoshiaki Kitayama, Sadao Tsukada
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    ABSTRACT: The arterial blood supply of the duplicated thumb was studied in 42 hands using the angiography technique. The developing factor of the duplicated thumb also may hinder the developing process of the limb artery, especially in the early stage when the median artery develops. In 73.8 percent of duplicated thumbs, two digital arteries were present, and 96.8 percent of them had one digital artery in each member. Simple ablation of the supernumerary digit leaves the thumb with a single end-arterial blood supply. The developmental mechanism of the duplicated thumb may depend not on duplication of the limb bud, but on splitting of the limb mesenchyme. The group of type VII of Wassel's classification was different from the other types in terms of origin of the digital artery distributing blood to the duplicated thumb.
    Plastic &amp Reconstructive Surgery 11/1983; 72(4):535-42. · 3.33 Impact Factor