Chao Kong

Chao Kong
Capital Medical University | CCMU · Beijing Luhe Hospital

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80
Publications
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231
Citations

Publications

Publications (80)
Article
Full-text available
Background The rate and volume of lumbar spinal fusion (LSF) surgery performed for patients aged 75 years and older increased in recent years. The purposes of our study were to identify factors associated with postoperative dissatisfaction and evaluate the predictive value of comprehensive geriatric assessment (CGA) for dissatisfaction at 2 years a...
Article
Full-text available
To investigate the influence of changes in T1 slope (T1S) and cervical sagittal vertical axis (CSVA) on cervical laminoplasty outcomes. Eighty-one patients with cervical spondylotic myelopathy (CSM) treated with cervical laminoplasty were enrolled in this study. Demographic parameters included age and follow-up time. Imaging data included occiput-C...
Article
Full-text available
Study design Retrospective cohort study. Purpose The aim of our study was to determine the rates and indications of reoperations following primary lumbar fusion, as well as the independent risk factors for early and late reoperation. Methods We retrospectively reviewed patients who underwent lumbar fusion surgery between January 2017 and March 20...
Article
Full-text available
Background The comprehensive geriatric assessment (CGA) has been proposed as a supplementary tool to reduce perioperative complications of geriatric patients, however there is no universally accepted standardization of CGA for orthopedic surgery. In this study, a novel CGA strategy was applied to evaluate the conditions of older patients undergoing...
Article
Full-text available
Background The quality of the paraspinal muscles has been recommended as a surrogate marker for the evaluation of the severity of the lumbar degenerative diseases (LDD). The purpose of this study is to determine the age- and sex-dependent differences in the morphology and composition of the paraspinal muscles between LDD and asymptomatic subjects....
Article
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Background: Although the management of the lumbar disease is highly dependent on the severity of the patient’s condition, optimal surgical techniques to reduce the risk of adjacent degeneration disease (ADS) remain elusive. Based on in vitro biomechanical tests of the cadaver spine, this study aimed to comparatively analyze the kinematic responses...
Article
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Background: There are many studies on the impact of frailty on postoperative complications; however, there are few studies focusing on stepwise propensity score matching (PSM) to offset the influence of age. Methods: We gathered data for patients undergoing short-level posterior lumbar interbody fusion from January to December 2021. According to...
Article
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Objective Cervical sagittal parameters have been widely used to predict clinical outcomes in patients with cervical spondylotic myelopathy (CSM). This study aims to coin a novel cervical sagittal parameter defined as the ratio of cervical sagittal vertical axis to T1 slope (CSVA/T1S) and to investigate the correlation between CSVA/T1S and postopera...
Article
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Background To explore the predictors for the restoration of the sagittal spinal malalignment in the elderly patients with lumbar spinal stenosis (LSS) after short-segment decompression and fusion surgery. Methods We retrospectively reviewed 82 LSS patients with sagittal malalignment (SVA ≥ 50 mm or PT ≥ 20° or PI-LL ≥ 20°) who underwent short-segm...
Article
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Background: Although spinopelvic radiographs analysis is the standard for a pathological diagnosis, it cannot explain the activities of the spine in daily life. This study investigates the correlation between sagittal parameters and spinal range of motion (ROM) to find morphological parameters with kinetic implications. Methods: Six L1-S1 human...
Article
Background Enhanced recovery after surgery (ERAS) for spinal surgery is new; specifically, an ERAS program for elderly patients is lacking. Geriatric patients have special characteristics that result in further harm by surgical stress. ERAS interventions are designed to improve recovery after surgery and can result in substantial benefits in clinic...
Article
Objectives To investigate the risk factors of suboptimal postoperative outcomes after short-segment surgery for degenerative lumbar spinal stenosis (DLSS) and severe sagittal imbalance and to recommend the appropriate candidates for the short fusion. Methods A total of 101 elderly subjects underwent short-segment surgery were included. Preoperativ...
Preprint
Objective To identify the risk factors associated with prolonged length of stay (LOS) despite an enhanced recovery after surgery (ERAS) protocol in short-level lumbar fusion surgery. Methods ERAS was implemented maturely at our department in January 2019. We gathered data for all patients undergoing short-level lumbar fusion surgery from May to Nov...
Article
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Background Measurement of T1 slope (T1S) can be difficult due to the anatomical positioning of the shoulders. And thoracic inlet angle (TIA) was a morphological parameter and not changed by the position. We proposed a new parameter, TIA minus C0-7 angle (TIA-C07), to evaluate C2-7 SVA in order to overcome the T1S imperfection. Methods This was a r...
Article
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Background The compensatory mechanisms for cervical lordosis change after laminectomy with fusion was not clear. The objective of this study was to evaluate the compensatory behaviors for cervical lordosis change after laminectomy with fusion. Methods This was a retrospective radiological analysis of 43 patients with cervical spondylotic myelopath...
Article
Full-text available
Background Wound complications are associated with worse satisfaction and additional costs in patients undergoing posterior lumbar fusion (PLF) surgery, and the relationship between enhanced recovery after surgery (ERAS) pathway and wound complications remains poorly characterized. Methods In this retrospective single-center study, we compared 530...
Preprint
Background: Enhanced recovery after surgery (ERAS) is currently widely used in in many surgical specialties, but it is still lack of concerning the cervical ERAS program for elderly patients (>60 years old). We aimed to determine whether our ERASprogram significantly improved satisfaction and outcomes in elderly patients (>60 years old) with anteri...
Preprint
Background: To explore the predictors for the restoration of the sagittal spinal malalignment in the elderly patients with lumbar spinal stenosis (LSS) after short-segment decompression and fusion surgery. Methods: We retrospectively reviewed 82 LSS patients with sagittal malalignment (SVA≥50mm or PT≥20° or PI-LL≥20°) who underwent short-segment de...
Preprint
Objective: To explore the predictors for the restoration of the sagittal spinal malalignment in the elderly patients with lumbar spinal stenosis (LSS) after short-segment decompression and fusion surgery. Methods: We retrospectively reviewed 82 LSS patients with sagittal malalignment (SVA≥50mm or PT≥20° or PI-LL≥20°) who underwent short-segment dec...
Article
Objective To explore the characteristics of the sagittal spinopelvic profile in the elderly Chinese population with lumbar disc herniation (LDH) and to evaluate its influence on the severity, location and number of disc degeneration. Methods A retrospective analysis was conducted on 212 elderly Chinese patients with LDH and 213 asymptomatic volunt...
Article
Full-text available
Background: Due to the presence of multimorbidity and polypharmacy, patients aged 75 and older are at a higher risk for postoperative adverse events after lumbar fusion surgery. More effective enhanced recovery pathway is needed for these patients. Pain control is a crucial part of perioperative management. The objective of this study is to determ...
Preprint
Background: The effectiveness of comprehensive geriatric assessment (CGA) has been confirmed to reduce perioperative complications of geriatric patients. But there is no universally accepted standardization of CGA for orthopedic surgery. In this study, a novel CGA strategy was applied to evaluate the conditions of elderly patients undergoing orthop...
Article
Full-text available
PurposeTo investigate the normal values of the sagittal spinal parameters and analyze the distribution of the global spinal profiles in a Chinese population with age over 75.Methods Two hundred and twelve sets of the whole spine lateral radiographs were obtained from a database of an asymptomatic elderly population. Global and regional spinal param...
Preprint
Full-text available
Background. Wound complications were associated with worse satisfaction and additional costs in patients underwent posterior lumbar fusion(PLF) surgery ,the relationship between enhanced recovery after surgery(ERAS)pathway and wound complications remains poorly characterized. Methods. In this retrospective single-center study, we compared 530 patie...
Article
Full-text available
Background To achieve the proper sagittal alignment, previous studies have developed different assessment systems for adult degenerative scoliosis (ADS) which could help the spine surgeon in making treatment strategies. The purpose of our study is to evaluate whether Roussouly classification or global alignment and proportion (GAP) score is more ap...
Article
Objective. The purpose of this study was to investigate the clinical effect of vertebral column decancellation (VCD) osteotomy combined with Ponte osteotomy in elderly patients withold thoracolumbar fracture combined with kyphosis deformity.Methods.36 elderly patients with old thoracolumbar fracture combined with kyphosis deformity admitted to our...
Article
Background: Surgical treatment of severe thoracolumbar kyphosis (TLK) secondary to late osteoporotic vertebral compression fracture (OVCF) presents several challenges to spine surgeons. Proper selection of distal fusion level is an important issue in surgical planning to decrease the likelihood of distal mechanical complications. This study was de...
Preprint
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Background The influence of spinopelvic morphology on the Chinese elderly LDH population was not clear. The purpose of this study is to explore its influence on the characteristics of lumbar disc herniation or degeneration. Methods 212 elderly patients with LDH and 213 asymptomatic volunteers were involved. Spinal parameters were measured on full-...
Preprint
Full-text available
Background: Currently, ERAS for spinal surgery field is still in its beginnings, the major protocol lessons learned from other surgical specialties and lack of ERAS program for elderly patients (>70 years old). Geriatric patients has its own special characteristics resulting in more harmed by surgical stress. The enhanced recovery after surgery (ER...
Article
Full-text available
Malnutrition is a risk factor for postoperative infectious complications of elderly patients undergoing posterior lumbar arthrodesis. At present, there is no gold standard for nutrition screening tools. We analyzed the value of predicting infectious complications among elderly patients over 70 years undergoing posterior lumbar arthrodesis by compar...
Preprint
Full-text available
Background: To achieve the proper sagittal alignment, previous studies have developed different assessment systems for degenerative spinal deformity which could help us in making treatment strategies. The purpose of our study is to evaluate whether Roussouly classification or GAP score is more appropriate in the prediction of mechanical complicatio...
Preprint
Full-text available
Background: In order to achieve the proper sagittal alignment, previous studies have developed different assessment systems for degenerative spinal deformity which could help us in making treatment strategies. The purpose of our study is to evaluate whether Roussouly classification or GAP score is more appropriate in the prediction of mechanical co...
Article
Background The lumbar spine displays its greatest mobility in ventral flexion, which is a potential risk factor for low back pain. The relative contribution of each segment to the complete flexion is denoted the spine rhythm, which is required to distinguish between normal and abnormal spinal profiles, and as well to calculate the spinal forces in...
Article
In aged individuals, osteopenia is a great concern for achieving solid spinal fusion. Spinal malunion could lead to various implant-related complications and reduce postoperative quality of life. This study aims to investigate the efficacy of collagen-binding bone morphogenetic protein-2 (CBD-BMP-2) on the treatment of lumbar inter-transverse defec...
Article
Full-text available
Background Enhanced recovery after surgery (ERAS) program is an evidence-based improvement over non-ERAS traditional care. The aim of the present study was to analyze the safety, feasibility, and efficacy of an ERAS program in patients over 70 years undergoing lumbar arthrodesis by comparison with non-ERAS traditional care. Methods During January...
Preprint
Full-text available
Background: Currently, ERAS for spinal surgery field is still in its beginnings, the major protocol lessons learned from other surgical specialties and lack of ERAS program for elderly patients (>70 years old). Geriatric patients has its own special characteristics resulting in more harmed by surgical stress. The enhanced recovery after surgery (ER...
Article
Full-text available
Study design: A retrospective case-control study. Objective: To evaluate the behavior of pelvic incidence (PI) after different posterior spinal procedures in elderly patients with adult spinal deformity (ASD), to determine the potential associated factors with the variability in PI after spinal surgery and to comprehensively analyze its mechanis...
Preprint
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Background. The mechanisms and risk factors for proximal junctional kyphosis of elderly patients may differ from those of non-elderly patients. The risk factors for PJK in the elderly population remain unclear. Methods. The present study enrolled elderly DSD patients over 65 years of age who underwent thoracolumbar fusion with no less than 3 levels...
Article
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Background The effectiveness of lumbar total disc replacement (TDR) with different prostheses for sagittal alignment has been reported previously. However, there are only few reports on Activ L TDR and no specific evidence regarding whether sagittal alignment affects the clinical outcomes. Methods Eighty-seven patients who underwent mono- or bi-se...
Article
Full-text available
Background and aim: The benefits of the enhanced recovery after surgery (ERAS) program to elderly patients have not been evaluated in lumbar fusion surgery. Compliance with the ERAS program is associated with prognosis. There is currently no adequate assessment about the importance of the individual components of ERAS program in lumbar fusion surg...
Article
Study design: A nonrandomized and prospective study. Objective: To compare clinical outcomes and sagittal alignment after 1-level, 2-level, and 3-level anterior cervical discectomy and fusion (ACDF) in patients with cervical spondylotic myelopathy (CSM). Summary of background data: ACDF is a widely used surgical approach for CSM. It remains co...
Article
Full-text available
Purpose: As the most poorly tolerated and debilitating form of spinal malalignment, sagittal imbalance is becoming an increasingly recognized cause of pain and disability in adults. However, there is evidence showing that sagittal imbalance has a weak or no correlation with health-related quality-of-life (HRQoL) outcomes. The objective of this stu...
Preprint
Full-text available
Background: The effectiveness of lumbar total disc replacement (TDR) with different prostheses for sagittal alignment has been reported previously. However, there are only few reports on Activ L TDR and no specific evidence regarding whether sagittal alignment affects the clinical outcomes. Methods: Thirty-six patients who underwent mono- or bi-seg...
Preprint
Full-text available
Background: The effectiveness of lumbar total disc replacement (TDR) with different prostheses for sagittal alignment has been reported previously. However, there are only few reports on Activ L TDR and no specific evidence regarding whether sagittal alignment affects the clinical outcomes. Methods: 87 patients who underwent mono- or bi-segmental l...
Article
Full-text available
Background: Degenerative disorders of the lumbar spine decrease the mobility and quality of life of elderly patients. Lumbar fusion surgery is the primary method of treating degenerative lumbar spine disorders; however, the surgical stress response associated with major surgery has been linked to pathophysiological changes in the elderly, resultin...
Article
Full-text available
Background and aim: Frailty is an independent predictor of mortality and adverse events (AEs) in patients undergoing surgery. This study aimed to quantify the ability of Modified Frailty Index (mFI) to predict AEs in older patients undergoing elective posterior thoracolumbar fusion surgery. Methods: We retrospectively reviewed the results of 426...
Preprint
Full-text available
Background: The aim of the present study was to analyze the safety, feasibility, and efficacy of an ERAS program in patients over 70 years undergoing lumbar arthrodesis by comparison with none-ERAS traditional care. Methods: During January 2018 to December 2018, patients enrolled received none-ERAS traditional care, while the ERAS program was imple...
Preprint
Full-text available
Background: The aim of the present study was to analyze the safety, feasibility, and efficacy of an ERAS program in patients over 70 years undergoing lumbar arthrodesis by comparison with none-ERAS traditional care. Methods: During January 2018 to December 2018, patients enrolled received none-ERAS traditional care, while the ERAS program was imple...
Preprint
Full-text available
Background: Enhanced recovery after surgery (ERAS) program is an evidence-based improvement over none-ERAS traditional care. The aim of the present study was to analyze the safety, feasibility, and efficacy of an ERAS program in patients over 70 years undergoing lumbar arthrodesis by comparison with none-ERAS traditional care. Methods: During Janua...
Article
Full-text available
PurposeTo compare the acute behaviors of pelvic incidence (PI) between elderly adult spinal deformity (ASD) patients with severe and minor sagittal deformity based on SRS-Schwab classification and to identify the mechanism of the variability in PI after long fusion to S1.Methods Patients aged 60 years or above with available radiographs were includ...
Preprint
Full-text available
Background:Degenerative disorders of the lumbar spinedecrease the mobility and quality of life of elderly patients.Lumbar fusion surgery is the primary methodof treating degenerative lumbar spine disorders; however, the surgical stress response associated with major surgery has been linked to pathophysiological changes in the elderly,resulting in u...
Preprint
Full-text available
Background: Degenerative disorders of the lumbar spine decrease the mobility and quality of life of elderly patients. Lumbar fusion surgery is the primary method of treating degenerative lumbar spine disorders; however, the surgical stress response associated with major surgery has been linked to pathophysiological changes in the elderly, resulting...
Article
Full-text available
This study evaluated differences in outcome variables between dynamic stabilization adjacent to fusion (DATF) and posterior lumbar interbody fusion (PLIF) for the treatment of lumbar degenerative disease. A systematic review of PubMed, EMBASE, and Cochrane was performed. The variables of interest included clinical adjacent segment pathologies (CASP...
Article
Full-text available
Cervical deformity (CD) is a kind of disorder influencing cervical alignment. Although the incidence of CD is not high, this deformity can cause not only pain but also difficulties in daily activities such as swallowing and maintaining upright position. Even though the common cause of cervical deformity is still controversial, previous studies divi...
Preprint
Full-text available
Background: Detailed anatomical information is important for identifying the origin and anatomic basis of symptoms in cervical spondylosis patients, but very little quantitative data have been reported. This study characterized the morphologic features of cervical spinal nerve rootlets and defined different zones at cervical spinal canal to provide...
Article
Background When talking about backward displacement of the vertebra, it generally refers to the retrolisthesis under low pelvic incidence (PI). It is worth to mention that lumbar retrolisthesis could also occur under a high-grade PI. Little knowledge was known about the radiographic characteristics and developmental mechanism of the retrolisthesis...
Article
Full-text available
Background: Biomechanical characteristics of noncontinuous ACDF and noncontinuous CDA in the treatment of noncontinuous cervical degenerative disc disease were still unclear. The aim of this research is to compare the differences between these two kinds of treatment methods and to verify the effectiveness of Prodisc-C in noncontinuous CDA. Method...
Preprint
Full-text available
Background: Detailed anatomical information is important for identifying the origin and anatomic basis of symptoms in cervical spondylosis patients, but very little quantitative data have been reported. This study characterized the morphologic features of cervical spinal nerve rootlets and defined different zones at cervical spinal canal to provide...