Identifying Tendon Injury on Induction

A Rarely Seen Hyperflexion Deformity of the Distal İnterphalangeal Joints as a Consequence of Partially Lacerated Superficial Flexor Tendons in the Palmar Region

“…Bhatti stated that, all deeplacerations in the hand are considered to be a tendon injury until otherwise proven (1). Here, we present a paradoxical sign of partially lacerated superficial tendons in the palmar region.…”

“…This maneuver reveals whether superficial flexor tendon is intact or not. As mentioned above, the disruption of the flexor cascade of the affected fingers in extended position was also determined on inspection (1). Besides the classical examination, two hyperextension maneuvers were also described previously for testing superficial tendon motion (3,4).…”

“…If the patient was not examined carefully, the superficial tendon injuries can be missed because of active deep tendon movements. Previously, the diagnosing methods of superficial tendon lacerations were reported in the literature (1)(2)(3)(4). However, no detailed reports were found about the diagnosis of partially lacerated superficial flexor tendons.…”

“…Flexor motion of the interphalangeal joint is affected due to lacerations. Deep tendon injuries result in loss of distal interphalangeal (DIP) joint motion, however superficial tendon injuries result in loss of proximal interphalangeal (PIP) joint motion (1,2). When the normal flexion cascade of fingers are disrupted, affected fingers are seen in extension position (1).…”