Evaluation of the accuracy and interobserver agreement of the reverse shoulder angle in the preoperative planning of reverse total shoulder arthroplasties.

Background: Differences in implant positioning between anatomical and reverse shoulder arthroplasties have raised concerns about the adequacy of assessing the global glenoid inclination (GGI) using the method described by Maurer to define the position of the metallic base in reverse shoulder arthroplasty. The reverse shoulder angle (RSA) has been proposed to measure the inclination of the lower half of the glenoid. This study aims to evaluate the interobserver agreement of manual measurements of the RSA using two-dimensional (2D) computed tomography (CT) images and its relationship with the automated measurement of the GGI.

MRI is a Reliable Method for Measurement of Critical Shoulder Angle and Acromial Index.

 The objectives of this study are to compare absolute values of acromial index (AI) and critical shoulder angle (CSA) obtained in both radiographs and magnetic resonance image (MRI) of the shoulder; and to compare the interobserver and intra-observer agreement for AI and CSA values measured in these image modalities.  Patients who had medical indication of investigating shoulders conditions through radiographs and MRI were included. Images were taken to two fellowship-trained shoulder surgeons, which conducted measurements of AI and CSA in radiographs and in MRI.

Humerus Diaphyseal Stress Fracture in a Teenage Tennis Athlete: Case Report.

A teenage male tennis player had chronic pain in his dominant arm during tennis practice. Magnetic resonance imaging (MRI) suggested humerus diaphyseal stress injury. After 4 weeks, he became asymptomatic and resumed playing.

Bone Integration and Prevalence of Radiolucent Lines around the Pegs of Minimally Cemented Glenoid Components in Total Shoulder Arthroplasty.

 Glenoid component failure is the main cause of total shoulder arthroplasty (TSA) revision, and component design seems to influence the failure rate. The aim of the present study was to clinically and radiographically (through X-rays and computed tomography scan) evaluate the results of TSA using a minimally cemented glenoid component.  Total should arthroplasties performed using the minimally cemented Anchor Peg (DuPuy Synthes, Warsaw, IN, USA) glenoid component between 2008 and 2013 were evaluated.

Intra-articular arthroscopic biceps tenodesis with interference screw: clinical and isokinetic evaluation.

Background: Although biceps tenodesis has been widely used to treat its pathologies, few studies looked at the objective evaluation of elbow strength after this procedure. The purpose of this study is to clinically evaluate patients submitted to long head of the biceps (LHB) tenodesis with interference screws through an intra-articular approach and analyze the results of an isokinetic test to measure elbow flexion and forearm supination strengths.

Methods: Patients who had biceps tenodesis were included in the study if they had a minimum follow-up of 24 months.

ELASTOGRAPHIC ANALYSIS OF THE SUPRASPINATUS TENDON IN DIFFERENT AGE GROUPS.

Objective: To compare the mechanical properties of the supraspinatus tendon in different age groups using Supersonic Shearwave Imaging (SSI) elastography.

Methods: We evaluated 38 healthy individuals of both genders, 20 being in the range of 20 to 35 years and 18 being over 60 years. The shear modulus of the supraspinatus tendon was measured by SSI elastography, always on the right side.

Proprioceptive deficit after total elbow arthroplasty: an observational study.

Background: During total elbow arthroplasty (TEA), most of the joint capsule is removed, including many mechanoreceptors important for proprioception, which potentially limits the patient's postoperative functional recovery. We quantified proprioceptive loss by measuring the threshold to detection of passive motion (TTDPM) in patients after unilateral TEA compared with the contralateral side.

Methods: A continuous passive motion device moving the elbow at 0.

Prevalence of hypothyroidism in patients with frozen shoulder.

Background: Hypothyroidism and frozen shoulder (FS) have been associated, although this relationship remains uncertain. The main objective of this study was to determine the prevalence of hypothyroidism in patients with FS.

Methods: A case-control study was performed to compare FS patients (cases) with patients who visited an orthopedic service for other clinical conditions (controls).

Intraobserver and interobserver agreement of Goutallier classification applied to magnetic resonance images.

Background: Fatty infiltration of the muscle bellies is an important prognostic factor in rotator cuff tears. It was described initially in computed tomography examinations, and there is an ongoing debate about whether magnetic resonance (MR) is a reliable method for staging fatty infiltration. This study sought to determine intraobserver and interobserver agreement for Goutallier's classification of fatty infiltration of the rotator cuff as evaluated through MR imaging.

CLINICAL DIAGNOSIS OF SUBSCAPULARIS TENDON TEAR USING THE BEAR HUG SEMIOLOGICAL MANEUVER.

Objective: To evaluate the Bear Hug maneuver for clinically diagnosing subscapularis tendon tears, and compare this with other maneuvers described previously (Lift-off, Napoleon and Belly Press).

Methods: Forty-nine patients with rotator cuff injuries who had undergone arthroscopy to repair the injury and had previously been assessed using the semiological maneuvers mentioned above were evaluated.

Results: The diagnostic values obtained for the Bear Hug test were as follows: sensitivity 75%, specificity 56%, positive predictive value 62%, negative predictive value 70% and accuracy 65%.

DISSEMINATED REFRACTARY TUBERCULOSIS WITH BICEPS TENDON INVOLVEMENT IN AN IMMUNOCOMPETENT PATIENT.

Objective: The authors report a rare case of disseminated tuberculosis which had compromised the long head of biceps tendon and shoulder joint, during standard drug therapy.

Methods: On a first sight, the accurate diagnosis wasn't accomplished and the patient had been treated with physiotherapy for rotator cuff tear. However, the patient presented with a fast growing mass in anterior region of the proximal third of the arm, complaining of pain increase.