FDP
Also written as: FDP — Flexor Digitorum Profundus
Flexor digitorum profundus, the deep flexor muscle responsible for distal interphalangeal joint flexion.
Full Definition
Flexor digitorum profundus (FDP) is the deepest muscle in the anterior forearm compartment that provides isolated flexion of the distal interphalangeal joints of the index, middle, ring, and small fingers. The muscle originates from the ulna and interosseous membrane and inserts at the base of the distal phalanges. FDP injuries are common in hand trauma and require careful surgical repair to maintain grip strength and fine motor function. The tendon passes through the flexor digitorum superficialis split in zone II, making repairs in this area particularly challenging.
Usage
Usage note: Distinguish from FDS (flexor digitorum superficialis) in clinical documentation.
In Context
- "The FDP tendon was completely transected at the level of the proximal phalanx." — Surgical assessment
- "Isolated FDP testing revealed weakness in the ring finger." — Physical examination