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Key findings:
- increased radiocapitellar joint space (red double arrow)
- bone bruise of the posterior capitellum (red arrow) and anterior radial head (red arrowhead)
- bone bruise of the posterior radial head (orange arrowhead)
- small peripherally sclerosed fragments posterior to the capitellum (red dotted circle) - old Osborne-Cotterill lesion
- myotendinous injury of the brachialis muscle (light blue arrow) and the flexor digitorum superficialis origin (light blue arrowhead)
- the humeral insertion of the radial collateral ligament (purple arrowhead) and the lateral ulnar collateral ligament (dark blue arrowhead) are not readily identified, instead, there is some ill-defined tissue
- the posterior part of the ulnar collateral ligament is torn
- the anterior part of the ulnar collateral ligament (green arrow) is attached to an old medial avulsion fragment, intact distal lateral ulnar collateral ligament (LUCL)
- anterior radiocapitellar shift - the distance between the radial axis and the midpoint of the capitellum > 2mm
- ulnohumeral joint asymmetry