Reason: eval thumb MP joint for intraarticular pathology - please use fine cuts History: mp prior dislocation - pain There is mild edema-type signal within the volar aspect of the head of the first metacarpal and to a lesser degree within the volar aspect of the base of the proximal phalanx which may represent bone contusions, but we see no discrete fracture line. The volar plate appears detached from the volar aspect of the base of the proximal phalanx with minimal displacement. The distal fibers of the ulnar collateral ligament appear thickened at their attachment to the base of the proximal phalanx, indicating a sprain. Furthermore, the ulnar collateral ligament appears partially detached from the base of the proximal phalanx. We see no findings to suggest a Stener lesion. The radial collateral ligament appears intact. The sesamoid bones appear intact. There is mild edema along the extensor pollicis longus and brevis tendons as they course dorsal to the first metacarpal neck, but we see no tendon disruption. The remainder of the visualized tendinous structures appear normal.
1. Detachment of the volar plate from the base of the proximal phalanx of the thumb with minimal displacement.2. Partial-thickness tear of the ulnar collateral ligament at its attachment to the base of the proximal phalanx of the thumb, but we see no full-thickness tear or Stener lesion.