Cubitus varus complicated by snapping medial triceps and posterolateral rotatory instability

Distal triceps injuries (including snapping triceps): A systematic review of the literature

“…The snapping triceps occurs in a younger population than triceps tendon rupture with a mean age of 32 years ( n = 30), ranging from 14-65 years[36-42] and slightly reduced male to female ratio of 6.5:1[36-42]. …”

“…Snapping triceps has been demonstrated to be bilateral in some patients, but is not necessarily symptomatic on both sides[42]. On the medial side, the snapping can be attributed to the ulna nerve, but snapping may still occur despite ulna nerve transposition[36]. Snapping triceps may be associated with dislocation of the ulna nerve[43].…”

“…On the medial side snapping triceps can be a complication of displaced supracondylar fractures[36,45], inherited as an accessory medial triceps or abnormal insertion[43,46], due to hypertrophy of the medial triceps in athletes[43,47], associated with hypermobility of the ulna nerve[42], associated with osseous abnormalities[42] and as a complication of ulna nerve transposition[48,49]. On the lateral side it has been associated with a widened triceps tendon inserting more laterally and is treated with resection of the lateral edge[41].…”

“…If this is unsuccessful surgery can be considered[36]. Surgery can include resection of the triceps edge, transposition of the tendon, transposing an associated ulnar nerve and correction of cubitus varus[43,45].…”

“…Surgery can include resection of the triceps edge, transposition of the tendon, transposing an associated ulnar nerve and correction of cubitus varus[43,45]. Transposition involves transferring the medial third of the tendon to the lateral position[36,47]. …”