52-year-old female with a history of a "trigger finger" of the third digit status post release. There is mild volar displacement of the flexor digitorum profundus tendon from the head of the third metacarpal. For reference, the flexor digitorum profundus tendon is approximately 2.3 mm from the volar aspect of the head of the third metacarpal, compared to 1.5 mm in the fourth digit. The flexor digitorum profundus tendon is approximately 1 mm from the volar aspect of the base of the third proximal phalanx, compared to 0.5 mm in the fourth digit. There is further separation of the flexor digitorum superficialis, which is approximately 6 mm from the volar aspect of the head of the third metacarpal, compared to 4.5 mm for the fourth digit. The flexor digitorum superficialis is approximately 4.5 mm from the volar aspect of the base of the third proximal phalanx of the third digit, compared to 3 mm for the fourth digit.There is fluid within the flexor tendon sheath and mild edema extending through the superficial soft tissues along the flexor tendon apparatus. The A2 pully appears intact. The flexor digitorum superficialis tendon itself appears normal and inserts normally upon the middle phalanx. There is mild increased signal intensity within the flexor digitorum profundus tendon as it courses along the proximal phalanx, perhaps reflecting mild tendinosis, but it inserts in normal fashion on the distal phalanx. There is a cyst within the third metacarpal head, of doubtful clinical significance.The remaining visualized bones and soft tissues appear normal.
Surgical changes of trigger finger release with mild volar displacement of the flexor tendons, as described above.