A novel computed tomography scoring system for evaluating the risk of dural defects in anterior surgery for cervical ossification of the posterior longitudinal ligament.

Objective: To develop and validate a computed tomography (CT)-based scoring system for evaluating the risk of dural defects (DDs) in anterior surgery for cervical ossification of the posterior longitudinal ligament (OPLL).

Methods: We retrospectively analyzed CT imaging features of 114 OPLL patients in our institute who received anterior decompression surgery. Intraoperative DDs were found in 16 patients.

Copper-Catalyzed Enantioselective Arylation via Radical-Mediated C-C Bond Cleavage: Synthesis of Chiral ω,ω-Diaryl Alkyl Nitriles.

The first example of copper-catalyzed ring-opening, enantioselective arylation of cyclic ketoxime esters to access ω,ω-diaryl alkyl nitriles has been developed in high yield (up to 92% yield) with excellent enantioselectivity (up to 91% ee). Side-arm bis(oxazoline) ligand plays a significant role in this asymmetric catalytic transformation, which provides an efficient route to construct diverse chiral ω,ω-diaryl alkyl nitriles. Synthetic utility has also been demonstrated in the further derivatization of the ω,ω-diaryl alkyl nitrile to the corresponding amide.

Extracapsular subcutaneous endoscopic treatment for refractory lateral epicondylalgia: technique, retrospective results, and prognostic factors.

Background: The extracapsular subcutaneous endoscopic treatment is a new and under-researched approach to the endoscopic treatment of refractory lateral epicondylalgia. We aimed to introduce the techniques of the method and the mid-long term clinical effects. Furthermore, we intended to identify demographic and surgical-related factors correlated with prognosis of extracapsular subcutaneous method.

Novel method for diagnosing lateral patellar compression syndrome using X-ray: a retrospective case-control study.

Background: A well-established reference is lacking for diagnosing lateral patellar compression syndrome (LPCS), and this diagnosis currently depends on clinicians' subjective judgment and several examination results. X-rays are primarily used to diagnose LPCS, but they have low detection rates of patellar tilt using the congruence angle (CA) and patellar tilting angle (PTA).

Methods: We enrolled 87 patients (31 men and 56 women; mean age: 42.

Endoscopic Surgery for Delayed Wound Healing After Achilles Tendon Suture Repair: A Report of Three Cases.

Background: Delayed wound healing is a potention complication after Achilles tendon suture repair and occurs for various reasons. The conventional treatment for delayed wound healing is open surgery, but patients face long recovery times and postoperative care is difficult.

Case Presentation: This report presents three patients who were seen at our institute from April 2008 to October 2017 due to long-term non-healing wounds after surgery.

The Hug-up Test: A New, Sensitive Diagnostic Test for Supraspinatus Tears.

Background: The supraspinatus tendon is the most commonly affected tendon in rotator cuff tears. Early detection of a supraspinatus tear using an accurate physical examination is, therefore, important. However, the currently used physical tests for detecting supraspinatus tears are poor diagnostic indicators and involve a wide range of sensitivity and specificity values.

Clinical and Magnetic Resonance Imaging Results of Arthroscopic Repair of Intratendinous Partial-thickness Rotator Cuff Tears.

Background: Partial-thickness rotator cuff tears (PTRCTs) are being diagnosed more often because of high-resolution magnetic resonance imaging (MRI). Compared with articular and bursal side tears, there have been few studies about evaluating the clinical and structural outcomes after intratendinous tear repair.

Methods: From 2008 to 2012, 33 consecutive patients with intratendinous PTRCTs underwent arthroscopic repair.

[Mid-term results after arthroscopic repair of full-thickness rotator cuff tears].

Objective: To evaluate the mid-term results of arthroscopic repair of full-thickness rotator cuff tears.

Methods: From December 2002 to May 2007, 35 patients(35 shoulders) with full-thickness rotator cuff tears underwent arthroscopic treatment. Five patients were lost in the follow-up period, leaving 30 patients available for evaluation.

Prospective randomized comparison of anatomic single- and double-bundle anterior cruciate ligament reconstruction.

Purpose: To determine if anatomic double-bundle anterior cruciate ligament (ACL) reconstruction is superior to anatomic single-bundle reconstruction in restoring the stabilities and functions of the knee joint.

Methods: A prospective randomized clinical study was done to compare the results of 32 cases of anatomic single-bundle ACL reconstruction and 34 cases of anatomic double-bundle ACL reconstruction with average follow-up of 16.3 ± 3.

The added value of ABER position for the detection and classification of anteroinferior labroligamentous lesions in MR arthrography of the shoulder.

Purpose: The purpose of this study is to compare MR arthrography in abduction and external rotation (ABER) position with conventional MR arthrography in neutral position for the detection and further classification of anteroinferior labroligamentous lesions.

Materials And Methods: Two hundred and twenty-nine cases of shoulder MR arthrography with subsequent arthroscopy were retrospectively evaluated. All MR arthrograms in ABER position and neutral position were independently assessed by two radiologists who were blinded to the arthroscopic findings.

Arthroscopic debridement of osteoarthritic elbow in professional athletes.

Background: Arthroscopic debridement is an appropriate procedure for osteoarthritic elbow in general populations. However, the results of arthroscopic debridement in the professional athletes, a younger and highly active patient cohort is unclear. The purposes of this study were to assess the clinical outcomes of arthroscopic debridement of osteoarthritic elbow in professional athletes and to evaluate the effect of prognostic factors on the clinical outcomes.

Changes of histology and capsular collagen in a rat shoulder immobilization model.

Background: Shoulder immobilization can induce adhesion of the joint, capsular contracture or lead to the condition of frozen shoulder. However, little is known about the histological effects of immobilization on the shoulder joint. This study aimed to explore the effect of immobility on the subscapular bursa (SSB) and the joint capsular content, including the distribution of types I and III collagen, within an immobilized rat shoulder.

[Arthroscopic Bankart repair with suture anchors: results and risk factors of recurrence of instability].

Objective: To evaluate retrospectively the results of arthroscopic Bankart repair using suture anchors for recurrent anterior shoulder dislocation with a minimum 1-year follow-up and to assess risk factors for recurrence.

Methods: From March 2002 to March 2010, 259 patients with recurrent anterior shoulder dislocation underwent arthroscopic Bankart repair with suture anchors. And 188 patients (50 athletes, 138 nonathletes) were available for follow-up.

Diagnosis of bursal-side partial-thickness rotator cuff tears.

Objective: To study the clinical features and diagnosis of bursal-side partial-thickness rotator cuff tears.

Methods: From August 1999 to June 2006, 38 patients with bursal-side partial-thickness rotator cuff tear were evaluated. Twenty-eight men and ten women of average age 45.

[Preliminary report on lateral ulnar collateral ligament reconstruction or repair for treatment of posterolateral rotatory instability of elbow].

Objective: To explore the preliminary results of lateral ulnar collateral ligament (LUCL) reconstruction or repair for posterolateral rotatory instability (PLRI) of elbow.

Methods: Between December 2006 and September 2010, 9 consecutive patients (9 elbows) undergoing surgical reconstruction or repair of LUCL for the treatment of elbow PLRI were studied. Surgical reconstruction of LUCL was performed with a tendon graft in 6 elbows and reattachment of LUCL to humerus in 3.

The position of the posterolateral bundle femoral tunnel during arthroscopic double-bundle anterior cruciate ligament reconstruction: a cadaveric study.

Purpose: The purpose was to find a simple guideline to help establish accurate positioning of the posterolateral bundle (PLB) femoral bone tunnel during double-bundle anterior cruciate ligament reconstruction by measuring the distance between the center of the PLB femoral footprint to the shallow and the deep articular cartilage borders of the lateral wall of the intercondylar notch.

Methods: The femoral insertions of the anteromedial bundle and PLB of the anterior cruciate ligament were dissected in 22 male cadaveric knees, aged 25 to 45 years. By use of the intercondylar notch as the landmark, the distances between the center of the PLB femoral footprint and the shallow and the deep articular cartilage borders of the lateral wall of the intercondylar notch were measured with the knees flexed at 90°.

[Arthroscopic treatment of bursal-side partial-thickness rotator cuff tears].

Objective: To study the surgical techniques and results of arthroscopic treatment of bursal-side partial-thickness rotator cuff tears.

Methods: From June 2002 to December 2007, 57 patients with bursal-side partial-thickness rotator cuff tears underwent arthroscopic treatment. There were 34 male and 15 female patients, the average age was 49.

Arthroscopic release of the deltoid contracture.

Background: The deltoid contracture is an uncommon disorder. Long-standing contracture produces winged scapula, abduction and extension contracture of the shoulder. Surgical release has been considered the treatment of choice.

The protective effect of tetramethylpyrazine on cartilage explants and chondrocytes.

Aims Of Study: Ligusticum wallichi Franchat (chuanxiong) is a very common traditional Chinese herbal medicine in China. Tetramethylpyrazine (TMP) is a major active ingredient extracted from Ligusticum wallichi Franchat. We investigated the protective effect of TMP on interleukin-1β (IL-1β) induced proteoglycan (PG) degradation and apoptosis in rabbit articular cartilage and chondrocytes.

Protective effect of sinomenine on cartilage degradation and chondrocytes apoptosis.

Sinomenine (SIN), an alkaloid extracted from the stem of the Chinese medicinal plant sinomenium acutum, has been used for treating rheumatoid arthritis. But little is known whether SIN has a protective effect on osteoarthritis (OA). In this study, we investigated the protective effect of SIN on IL-1beta-induced proteoglycan degradation and apoptosis in rabbit articular cartilage and chondrocytes.

[A randomized comparison of open and arthroscopic Nirschl debridement for refractory lateral epicondylitis].

Objective: To compare open and arthroscopic methods for treatment of recalcitrant lateral epicondylitis.

Methods: A prospective trial of 26 patients (28 elbows) with recalcitrant lateral epicondylitis were treated between May 2006 and September 2008. The mean duration of conservative care was 23.

[Arthroscopic reconstruction of the posterior cruciate ligament using single-bundle bone-patella tendon-bone graft with moderate to long term follow-up].

Objectives: To evaluate the 4- to 10-year results of arthroscopic reconstruction of the posterior cruciate ligament (PCL) using single-bundle bone-patella tendon-bone graft, and to find out the principle and influential factor of the isolated PCL reconstruction.

Methods: From May 1998 to July 2004 the data of 29 patients with isolated PCL reconstruction retrospectively investigated, using single-bundle bone-patella tendon-bone graft. Twenty-two cases were followed up with average 7.