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Acute fragmentation of the entire capitellar ossific nucleus
2%
71/4630
Rupture of the anterior band of the anterior bundle of the ulnar collateral ligament
10%
459/4630
Repetitive contraction of the flexor-pronator mass stresses the chondro-osseous origin, leading to apophysitis
77%
3586/4630
Microtraumatic vascular insufficiency of the capitellum from chronic compressive and rotatory forces
458/4630
Repetitive triceps contraction during extension
0%
19/4630
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This adolescent pitcher's symptoms characterize Little Leaguer's elbow. Little Leaguer' elbow results from repetitive valgus stresses and tension overload of the medial structures. Chen et al. presents Level 5 evidence demonstrating that repetitive contraction of the flexor-pronator mass stresses the chondro-osseous origin at the medial epicondyle, leading to inflammation and subsequent apophysitis. Radiographic changes may range from normal to irregular ossification of the medial epicondylar apophysis, followed by accelerated growth, marked by apophyseal enlargement, separation, and eventually fragmentation. Limpisvasti et al presents Level 5 evidence that treatment of Little Leaguers elbow is initially conservative with rest followed by a gradual return to activities. Illustration A shows an MRI scan representing medial epicondyle apophysitis typical of Little Leaguer's Elbow.
3.7
(27)
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