PMC5209600_01
Anteroposterior and lateral radiographs of the elbow revealed lateral convergent displacement of the radius and ulna relative to the humerus without fracture signs.
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Anteroposterior and lateral radiographs of the elbow showed lateral convergent displacement of the radius and ulna relative to the humerus without fracture signs (Figure 1).
During reduction maneuver, the image intensifier revealed that only the ulnohumeral joint was reduced.
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After this maneuver, we felt a click; however, the image intensifier revealed that the elbow joint was not reduced fully, and we suspected that only the ulnohumeral joint was reduced on the trochlea of the humerus (Figure 2).
Postreduction radiographs revealed no fractures.
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Postreduction radiographs were obtained without signs of fracture (Figure 3).
Postreduction radiographs revealed obvious varus and valgus instability of the joint. However, redislocation was not observed in the range of motion from 30  to 90 .
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Though obvious varus and valgus instability of the joint was observed, redislocation was not observed in the range of motion from 30  to 90  (Figure 4).
The elbow arthrography revealed a complete tear of the medial collateral ligament and a suspected partial tear of the lateral collateral ligament.
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Elbow arthrography revealed a completely torn medial collateral ligament (MCL) and a suspected partial tear of the lateral collateral ligament (LCL, Figure 5).
After 8 weeks, the elbow range of motion was from 0  to 125 , supination to 90 , and pronation to 90 .
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After 8 weeks, the elbow range of motion was from 0  to 125 , supination to 90 , and pronation to 90  (Figure 6).
Eight weeks after the trauma, radiographs revealed mild calcification around the anterior articular capsule, medial collateral ligament, and lateral collateral ligament.
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Radiographs revealed mild calcification around the anterior articular capsule, MCL, and LCL; however, the patient did not complain of elbow pain (Figure 7).
Decreased velocity and prolonged latency of the ulnar nerve improved steadily.
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The decreased velocity and prolonged latency of the ulnar nerve improved steadily (Figure 8).