The purpose of this study was to describe the extramedullary humeral morphology in paired humeri to determine whether geometric differences exist from side to side in the same individual. The anatomic characteristics of 28 paired, dry cadaveric humeri were measured by use of an electromagnetic tracking system. Of the characteristics examined, only the humeral head height was significantly diffe...

Since Neer's early work in the 1950s shoulder arthroplasty has evolved as a treatment option for various glenohumeral joint disorders. Both hemiarthroplasty and total shoulder prostheses have associated problems. This has led to further work with regards to potential resurfacing, with the aim of accurately restoring native proximal humeral anatomy while preserving bone stock for later procedure...

Rapid destruction of the femoral head has been well understood since Postel’s report in 1970 [1]. This condition occurs mostly in elderly women, and considerable concern has been directed to the subchondral insufficiency fracture as a cause of femoral head collapse [2]. In contrast, rapid destruction of the humeral head is rare; only one case of nonnecrotic humeral head collapse is reported in ...

Background: The vast majority of displaced pediatric supracondylar humeral fractures can be treated successfully with closed reduction and percutaneous pinning. The need for open reduction is difficult to determine a priori and is typically due to the failure of closed reduction attempts or persistent limb ischemia. The aims of this study were to determine the prevalence of flexion-type supraco...

The humeral head articulates with the glenoid fossa of the scapula. The anatomical neck separates the greater and lesser tuberosities from the humeral head. The long head of biceps runs between the tuberosities in the bicipital groove, and the surgical neck is just below the greater and lesser tuberosities. The radial nerve runs posteriorly around the middle third of the humeral shaft in the sp...

INTRODUCTION In a healthy shoulder, as the humerus elevates, the scapula rotates upward and tilts posteriorly. Factors are known to influence the magnitude of this response such as the plane of elevation [1]; however, gender is rarely tested as a factor. This is remarkable, as gender is known to influence kinematic and injury outcomes at other joints, such as at the knee [2]. Therefore the purp...

Displaced three- and four-part proximal humerus fractures are among the most challenging shoulder conditions to manage. Because of the risk of symptomatic malunion, nonunion, and humeral head osteonecrosis, surgical management is preferred. Locking plate technology has provided an alternative to hemiarthroplasty for certain three- and four-part fracture patterns, even in the setting of osteopen...

Distal humeral fractures in adults are relatively uncommon injuries that require operative intervention in the majority of cases. Dual plate fixation, with placement of a separate strong plate on each column and orientation of the plates either at 90° or 180° to each other, is indicated for all adult fractures involving both columns of the distal part of the humerus. Acute total elbow arthropla...

The majority of humeral shaft nonunions resolve following operative intervention; however, a small percentage will persist despite surgical efforts. These cases of persistent nonunion are frustrating for patients and challenging for orthopedic surgeons. The authors describe the use of a step-cut osteotomy of the humeral diaphysis coupled with neutralization plating and autologous bone grafting ...

OBJECTIVE To report an unusual combination of paraglenoid labral cyst and labral tear with chondral defect of the humeral head. CLINICAL PRESENTATION AND INTERVENTION A 34-year-old man presented with right shoulder pain. Conventional MR imaging showed paraglenoid labral cyst. MR arthrography revealed a humeral chondral defect and labral tear associated with paraglenoid labral cyst, and a defe...