Functional knee phenotypes appear to be more suitable for the Chinese OA population compared with CPAK classification: A study based on 3D CT reconstruction models.

Purpose: The aim of this study was to investigate the distribution of coronal plane alignment of the knee (CPAK) classification and functional knee phenotypes in a Chinese osteoarthritis (OA) population and to compare different lower limb alignment targets according to the distribution characteristics to find suitable total knee arthroplasty (TKA) bone cut strategies for the Chinese OA patients.

Methods: The computed tomography (CT) images were retrospectively collected and the three-dimensional (3D) models were reconstructed from 434 Chinese OA patients, including 93 males and 341 females, with a mean age of 66.4 ± 9.

[Effectiveness of Tang's arthroscopy approach for anterior and posterior ankle impingement syndrome].

Objective: To investigate the effectiveness of Tang's arthroscopy approach in treatment of anterior and posterior ankle impingement syndrome.

Methods: Between August 2010 and September 2017, 92 patients with anterior and posterior ankle impingement syndrome were retrospectively analyzed. There were 58 patients were treated with Tang's arthroscopy approach under floating decubitus (group A) and 34 patients were treated with standard anterior and posterior approaches (group B).

[Effectiveness of Extracorporeal Shockwave Therapy in Treating Superior Lateral Brachial Cutaneous Nerve Compression Syndrome].

Objective To evaluate the effectiveness of radial extracorporeal shockwave therapy(rESWT) for the treatment of superior lateral brachial cutaneous nerve(SLBCN) compression syndrome.Methods A total of 40 patients with SLBCN compression syndrome who were treated in our department from March 2013 to October 2015 were equally randomized into two groups according to random number table:rESWT group(treated with rESWT for 1 cycle) and control group(treated with local hormone injection for 1 cycle). Visual analogue scale(VAS) and Constant-Murley scale(CMS) were applied to evaluate the shoulder joint function before treatment and 1 month and 1 year after treatment.

Downregulation of microRNA-9 increases matrix metalloproteinase-13 expression levels and facilitates osteoarthritis onset.

Matrix metalloproteinase-13 (MMP-13) degrades collagen and other matrix components, thus playing a critical role in the development of osteoarthritis (OA). The expression level of microRNA‑9 (miR‑9) is significantly depressed in cartilage tissues of OA patients. Furthermore, bioinformatics analysis demonstrated complementary binding sites between miR‑9 and MMP‑13.

[REVERSED ARTHROSC OPIC SUBACROMIAL DEC OMPRESSION FOR TREATMENT OF ROTATOR CUFF TEARS].

Objective: To investigate the effectiveness of reversed arthroscopic subacromial decompression in the treatment of rotator cuff tears.

Methods: Between November 2012 and January 2015, 53 patients with rotator cuff tears were treated with reversed arthroscopic subacromial decompression and rotator cuff repair. Of 53 patients, 38 were male and 15 were female, with the age of 47-61 years (mean, 53.

Correlation between anatomical parameters of intertubercular sulcus and retroversion angle of humeral head.

Objective: To obtain anatomical data on intertubercular sulcus of humerus, evaluate the correlation between intertubercular sulcus and retroversion angle of humeral head, to guide the positioning of torsion angle of prosthesis during total shoulder arthroplasty and provide references for shoulder prosthesis design.

Methods: Using a Siemens Ultrahigh speed 64- rows multi-slices spiral CT scanner and 20 dried adult humeral specimens (intact specimen, no fractures or pathological damage), of these, left lateral in 10 cases, right lateral in 10 cases, male or female all inclusive, specimens are all provided by Anatomy Department of Weifang Medical College, scan ranged from the highest point of humeral head to the distal ends of trochlea. And scanned data were subjected to statistical analysis.

Effect of recombinant human bone morphogenetic protein 2/poly-lactide-co-glycolic acid (rhBMP-2/PLGA) with core decompression on repair of rabbit femoral head necrosis.

Objective: To observe the effect of recombinant human bone morphogenetic protein 2/poly-lactide-co-glycolic acid (rhBMP-2/PLGA) with core decompression on repair of rabbit femoral head necrosis.

Method: Bilateral femoral head necrosis models of rabbit were established by steroid injection. A total of 48 rabbits (96 femoral head necrosis) were randomly divided into 4 groups: Group A, control group with12 rabbits, 24 femoral head necrosis; Group B, treated with rhBMP-2/PLGA implantation after core depression, with 12 rabbits, 24 femoral head necrosis; Group C, treated with rhBMP-2 implantation after core depression, with 12 rabbits, 24 femoral head necrosis; Group D treated with core depression group without implantation, with 12 rabbits, 24 femoral head necrosis.

Arthroscopy-assisted reconstruction of coracoclavicular ligament by Endobutton fixation for treatment of acromioclavicular joint dislocation.

Objective: The aim of this study was to evaluate the clinical outcomes of arthroscopy-assisted reconstruction of the coracoclavicular (CC) ligament using Endobutton for treating acromioclavicular (AC) joint dislocation.

Methods: From March 2012 to May 2013, a total of 22 patients with fresh AC joint dislocation (Rockwood type III and type V) were treated with arthroscopy-assisted Endobutton reconstruction of the CC ligament. The regular post-operation follow-up was performed.

[Arthroscopic surgery for severe elbow osteoarthritis and ankylosis].

Objective: to investigate the clinical efficacy of arthroscopic debridement, shaping and soft tissue releasing in the treatment of severe elbow osteoarthritis and ankylosis.

Methods: arthroscopies were performed in 34 patients with severe elbow osteoarthritis. Among them, 13 were accompanied by ankylosis.