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BACKGROUND The lymph node ratio (LNR) classification has shown superiority to pN staging (the number of positive lymph nodes) in breast cancers, but it has not been examined according to whether sufficient lymph nodes have been dissected. METHODS All Chinese patients with luminal A breast cancer with positive lymph nodes seen at Sun Yat-sen University(More)
STUDY DESIGN Retrospective study. OBJECTIVE The aims of this study were to evaluate the radiographic and clinical outcomes of Bryan cervical disc arthroplasty at 10-year follow-up. SUMMARY OF BACKGROUND DATA Cervical arthroplasty is a new technique for treating degenerative cervical disease. Previous reports have shown that cervical arthroplasty with(More)
The purpose of this study was to evaluate the application of the minimum clinically important difference (MCID) concept to postoperative clinical results by using a prospective cohort study in Chinese patients with cervical spondylotic myelopathy (CSM). The sample consisted of 113 patients who underwent surgical treatment for CSM in our hospital between(More)
The aim of this study was to investigate how the severity of operative invasion to the posterior muscular-ligament complex impacts postoperative cervical sagittal balance. Ninety cases of open-door expansive laminoplasty due to cervical spondylotic myelopathy were reviewed. Fifty-three patients underwent laminoplasty with unilateral preservation of the(More)
BACKGROUND Adjacent segment disease (ASD) is common after cervical fusion. The aim of this study was to evaluate the risk factors for ASD on X-ray and magnetic resonance imaging (MRI). METHODS Patients included in this study had received revision surgeries after developing symptomatic ASD following anterior decompression and fusion. A control group that(More)
Ossification of the posterior longitudinal ligament of the spine (OPLL), which is characterized by ectopic bone formation in the spinal ligaments, can cause spinal-cord compression. To date, at least 11 susceptibility genes have been genetically linked to OPLL. In order to identify potential deleterious alleles in these OPLL-associated genes, we designed a(More)
BACKGROUND We aimed to calculate the responsiveness and statistically prove the reliability of the Medical Outcomes Study Short Form Health Survey (SF-36) in a prospective cohort study. We investigated the profile of mid-term health-related quality of life (QOL) outcome assessments after surgery for cervical spondylotic myelopathy (CSM) and determined the(More)
OBJECTIVE To explore the changes of sagittal balance of cervical spine after open-door expansive laminoplasty. METHODS The clinical and radiological data were analyzed retrospectively for 90 patients undergoing open-door expansive laminoplasty due to cervical spondylotic myelopathy. The Japanese Orthopedic Association (JOA) score and 3 cervical sagittal(More)
OBJECTIVE Our objective was to examine the prevalence, clinical significance, ramifications, and possible etiology of postoperative bone formation at the index level after Cervical Disc Replacement (CDR) with a minimum of five years of follow-up. SUMMARY OF BACKGROUND DATA CDR can be complicated by postoperative ossification and unwanted ankylosis at the(More)
BACKGROUND Open-door laminoplasty is widely used in the treatment of cervical spondylotic myelopathy (CSM). This study aimed to investigate the profiles of and correlation between objective and subjective short-term outcome assessments after open-door laminoplasty for CSM. METHODS We retrospectively analyzed surgical outcomes in 129 consecutive CSM(More)