Efficacy and safety of ultrasound-guided percutaneous radiofrequency ablation for synovial hyperplasia.

Purpose: This study aimed to investigate the efficacy and safety of ultrasound-guided percutaneous radiofrequency ablation (RFA) for the treatment of synovial hyperplasia in the knee joints of antigen-induced arthritis (AIA) model rabbits.

Methods: Forty Japanese large-eared white rabbits were divided into AIA and control groups. After successful induction of the AIA model, the knee joints were randomly assigned to RFA and non-RFA groups.

[Preliminary clinical results of endoscopic assisted anterior lumbar interbody fusion].

Objective: To summarize the experiences of endoscopic assisted anterior lumbar interbody fusion (ALIF) with self-locking cage via retroperitoneal approach through small incision lateral to abdominal rectus.

Methods: There were 47 cases of endoscopic assisted ALIF from April 2010 to April 2012 were reviewed retrospectively, including 28 male and 19 female patients whose age ranged from 39 to 65 years, averaged of (48 ± 11) years. Of 47 cases, 17 cases were founded instability in lumbar spine, 16 cases of discogenetic low back pain, 7 cases of degenerative spondylolithesis, and 7 cases of recurrent disc herniation.

[The use of anterior cervical discectomy and fusion with self-locking cages to treat multi-segmental cervical myelopathy].

Objective: To investigate the use of anterior cervical discectomy and fusion with self-locking cages to treat multi-segmental cervical myelopathy.

Methods: From April 2008 to March 2010, anterior cervical discectomy and fusion with self-locking cages were performed on 45 patients who suffered from multi-segmental cervical myelopathy, among of them there were 23 male and 22 female, aged from 32 to 67 years (average 53 years). Recording the Japanese Orthopedic Association (JOA) scores and SF-36 scores in the protocol time point, in order to investigate the clinical outcome, meanwhile, accumulating the pre-operation and postoperation X-ray films of cervical spine for measuring the height of intervertebral space, whole curvature of cervical spine and the rate of fusion by repeated measures analysis of variance.

[Factors affecting adjacent segment degeneration after rigid lumbar internal fixation].

Objective: To analyze the factors affecting the occurrence of adjacent segment degeneration (ASD) after lumbar internal fixation.

Methods: The clinical data of 147 surgical patients with lumbar disc herniation, lumbar spinal stenosis and lumbar spodylolisthesis undergoing surgeries between January 2002 and July 2007 in our hospital were reviewed. The correlations of gender, range of fixation, position of fixation, and characteristic of the adjacent disc to the occurrence of ASD were analyzed.