Title of article :
An anthropometric study of the distal humerus
Author/Authors :
Desai، نويسنده , , Sagar J. and Deluce، نويسنده , , Simon A. Johnson، نويسنده , , James A. and Ferreira، نويسنده , , Louis M. and Leclerc، نويسنده , , Alexandre E. and Athwal، نويسنده , , George S. and King، نويسنده , , Graham J.W.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
7
From page :
463
To page :
469
Abstract :
Background timal articular shape for distal humeral hemiarthroplasty has not been defined because of a paucity of data quantifying the morphology of the normal distal humerus. This study defines the osseous anatomy and anatomic variability of the distal humerus using 3-dimensional imaging techniques. s dimensional surface models were created from computed tomography scans obtained from 50 unpaired human cadaveric elbows. Geometric centers of the capitellum and the trochlear groove defined the anatomic flexion-extension axis. A coordinate system was created, and the distal humerus was sectioned into 100 slices along this axis. The C line was defined as the line of best fit connecting the geometric centers of each of the slices. s atomic flexion-extension axis of the distal humerus was found to be an average of 1° ± 1° from the C line (range, 0°-3°) in the coronal plane and 2° ± 1° (range, 0°-7°) in the transverse plane. The average trochlear width was 22 ± 3 mm, and the average trochlear height was 18 ± 2 mm. The mean width of the capitellum was 17 ± 2 mm; the height was 23 ± 2 mm (P < .001). sions fference in the capitellum width and height demonstrates that the capitellum is ellipsoid, not spherical. A data bank of humeral dimensions may be used for the development of future distal humeral hemiarthroplasty implants. A more anatomic implant may optimize kinematics and maximize contact area, thus minimizing contact stresses on the native ulna and radius.
Keywords :
Distal humerus , morphology , Implant design , elbow hemiarthroplasty
Journal title :
Journal of Shoulder and Elbow Surgery
Serial Year :
2014
Journal title :
Journal of Shoulder and Elbow Surgery
Record number :
1870340
Link To Document :
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