Orthpaedic Surgery, Tripler Army Medical Center, Honolulu, Hawaii, USA
Orthpaedic Surgery, Tripler Army Medical Center, Honolulu, Hawaii, USA.
BMJ Case Rep. 2020 Apr 14;13(4):e234393. doi: 10.1136/bcr-2020-234393.
Closed ruptures of the flexor digitorum profundus (FDP) tendon cause a loss of active flexion at the distal interphalangeal joint. Commonly referred to as a 'jersey finger' because of its association with tackling sports, the distal aspect of FDP is avulsed from its insertion on the distal phalanx in zone I, with or without a fragment of bone. Because of this classic injury mechanism and pattern, providers may not seek advanced imaging beyond plain radiographs. Although rare, injury to FDP more proximally may occur. More often this injury is associated with a weak underlying tendon because of repetitive microtrauma or anomalous anatomy, for example. We present a case of a closed rupture of the FDP in zone III, and stress the importance of maintaining a high clinical suspicion and the potential use of adjunct ultrasound imaging to localise the site of injury.
屈指深肌腱（FDP）的闭合性断裂会导致远侧指间关节主动屈曲丧失。由于其与接触性运动有关，通常被称为“球衣指”，FDP 的远侧段从其在 I 区的远节指骨上的附着处撕脱，伴有或不伴有骨碎片。由于这种典型的损伤机制和模式，医生可能不会在普通 X 光片之外寻求进一步的影像学检查。尽管很少见，但 FDP 更靠近近端的损伤也可能发生。这种损伤更常见于由于反复微创伤或异常解剖等原因导致的潜在薄弱肌腱。我们报告了一例 FDP 在 III 区的闭合性断裂，并强调了保持高度临床怀疑的重要性，以及辅助超声成像定位损伤部位的潜在用途。
