Avascular necrosis of the humeral capitellum (Panner's disease), a relatively rare disorder in the juvenile. We diagnosed three patients using radiographs and magnetic resonance imaging, who were previously misdiagnosed with osteochondritis dissecans of the humeral capitellum. All patients were successfully treated by restriction of sports activities using the upper extremities. It is often dif...

HYPOTHESIS We hypothesized that the malpositioning of the humeral component can preclude the long-term success of anatomical total shoulder arthroplasty. The goal of this study was to evaluate the mechanical consequences of superior and inferior malpositioning of the humeral head. MATERIALS AND METHODS A numerical musculoskeletal model of the shoulder joint allowing natural humeral head trans...

Glenoid inclination has been associated with rotator cuff tears and superior humeral translation, but the relationship between glenoid inclination and superior humeral translation has not been assessed in vivo. This study compared glenoid inclination between repaired and contralateral shoulders in 21 unilateral rotator cuff repair patients. As a secondary analysis, we assessed the relationship ...

Traumatic posterior instability may occasionally cause a large osteochondral lesion when the anterior humeral head is compressed against the posterior glenoid rim. This is termed a reverse Hill–Sachs lesion. Such osteochondral defects may be very large in the case of chronic locked dislocations. Even in acute posterior disclocations, closed reduction may be difficult when the humeral head is lo...

The 2-step closed reduction maneuver was developed to aid in the rarely encountered inferior shoulder dislocation. The maneuver converts the humeral head from an inferior dislocation to an anterior dislocation and then reduces the humeral head into the glenoid. The operator places one hand on the shaft of the humerus and the other hand on the medial condyle. The hand on the shaft initiates an a...

INTRODUCTION Though proximal humeral physeal injuries are common in children, reports of proximal humeral physeal injuries with disruption of glenohumeral joint are exceedingly rare. We here report such a case. CASE REPORT A three year old male patient presented to us with proximal humeral physeal separation along with glenohumeral dislocation. Under general anaesthesia, closed reduction coul...

The articular surface of the humeral head is usually described as facing posteromedially, making an angle of between 16 degrees and 35 degrees with the transepicondylar plane. At hemiarthroplasty the articular surface also appears to be offset posteriorly with respect to the humeral shaft. Coracoid impingement may occur if this offset is not accommodated. An analysis was made of 29 cadaveric hu...

Reverse shoulder arthroplasty (RSA) is increasingly being used to revise anatomical total shoulder arthroplasty cases. This procedure's high complication rate has been reduced by the availability of modular shoulder systems, which allows the humeral component to be preserved during the conversion. This case report describes the revision of an anatomical shoulder implant inserted in 1998. Polyet...

The purpose of our study was to establish criterion-related validity and repeatability of a shoulder biomechanics testing protocol involving an electromagnetic tracking system (Flock of Birds [FoB]). Eleven subjects completed humeral elevation tasks in the sagittal, scapular, and frontal planes on two occasions. Shoulder kinematics were assessed with a digital inclinometer and the FoB. Intrases...

BACKGROUND Humeral shaft fractures account for 1 to 3% of all fractures in adults and for 20% of all humeral fractures. Non-operative treatment is still the standard treatment of isolated humeral shaft fractures, although this method can present unsatisfactory results. Surgical treatment is reserved for specific conditions. Modern concepts of internal fixation of long bone shaft fractures advoc...