Journal of shoulder and elbow surgery
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J Shoulder Elbow Surg · Jul 2013
Comparative StudyThe "bicipital aponeurosis flex test": evaluating the integrity of the bicipital aponeurosis and its implications for treatment of distal biceps tendon ruptures.
One mitigating factor in the accurate diagnosis of complete distal biceps tendon ruptures (DBTR) is the integrity of the bicipital aponeurosis (BA). Current orthopedic literature lacks a descriptive means of evaluating the integrity of the BA in the presence of distal biceps injury. ⋯ Evaluating the integrity of the BA can help to inform evaluation and treatment of DBTR, especially when visible or palpable alterations in biceps contour and proximal tendon migration are absent or equivocal.
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The purpose of this study was to evaluate wear debris in periprosthetic tissues at the time of revision total elbow arthroplasty. Polyethylene, metallic, and bone cement debris were characterized, and the tissue response was quantified. ⋯ We have shown that periprosthetic tissues of total elbow patients who have undergone revision for loosening and osteolysis contain polyethylene, cement, and metal debris. Although the polyethylene particles were of a size and shape that have been previously shown to result in activation of phagocytic cells, osteolysis after total elbow arthroplasty is a multimodal process. Because of the presence of multiple wear particle sources, a cause-and-effect relationship between polyethylene debris and osteolysis cannot be established with certainty.
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J Shoulder Elbow Surg · Jul 2013
Comparative StudyDoes cubitus varus cause morphologic and alignment changes in the elbow joint?
In cubitus varus after pediatric supracondylar fracture, late development of trochlear deformity causing additional varus angulation and joint misalignment relating to late complications of the tardy ulnar nerve palsy or posterolateral rotatory instability have been suggested. However, it is unclear whether these morphologic and alignment changes of the elbow joint occur in cubitus varus. The object of this study was to investigate morphologic changes of the bones and alignment changes of the elbow joint in longstanding cubitus varus using 3-dimensional computer bone models created from computed tomography data. ⋯ In longstanding cubitus varus, the morphology and alignment of the elbow joint are observed to differ from those of the normal side.