Background: Trigger finger is a common condition, causing impaired gliding of the digital flexor tendons. Chronic inflammation is the usual cause, but acute trigger finger following partial tendon laceration has also been described. Methods: We describe the case of a four year old girl who presented with inability to flex her index finger. Operative exploration revealed a closed partial rupture of the flexor digitorum profundus tendon, catching on the A2 pulley and preventing normal tendon gliding. Results: Excision of the damaged section of tendon allowed normal gliding motion, and once the wound had healed the patient regained full painless motion. Conclusion: Acute trigger finger caused by partial flexor tendon injury is an uncommon but well-documented presentation. Surgical exploration not only confirms the diagnosis, but allows for excision of the damaged segment to return normal movement without compromising strength.
BilosZJHuiPWStamelosS.Trigger finger following partial flexor tendon laceration. Hand. 1977;9:232-233.
2.
CaseRDLeslieIJ.Trigger finger in a child as a complication of interphalangeal dislocation. J Hand Surg Br. 1998;23(4):541.
3.
ErhardLZobitzMEZhaoCAmadioPCAnK.Treatment of partial lacerations in flexor tendons by trimming. A biomechanical in vitro study. J Bone Joint Surg Am. 2002;84-A(6):1006-1012.
4.
FrewinPRSchekerLR.Triggering secondary to an untreated partially-cut flexor tendon. J Hand Surg Br. 1989;14:419-421.
5.
FujiwaraM.A case of trigger finger following partial laceration of flexor digitorum superficialis and review of the literature. Arch Orthop Trauma Surg. 2005;125:430-432.
6.
GordonSL.Late rupture of one slip on the flexor digitorum superficialis: an unusual cause of triggering. Clin Orthop. 1981;158:142-143.
7.
JaneckiCJJr.Triggering of the finger caused by flexor-tendon laceration. J Bone Joint Surg Am. 1976;58:1174-1175.
8.
MaireNHendriksSGouzouSLiverneauxPAFaccaS.Support for partial lesions of the flexor tendons of the fingers: a retrospective study of 36 cases. Chir Main. 2014;33:130-136.
9.
OkanoTHidakaNNakamuraH.Partial laceration of the flexor tendon as an unusual cause of trigger finger. J Plast Surg Hand Surg. 2011;45:248-251.
10.
SchlenkerJDListerGDKleinertHE.Three complications of untreated partial laceration of flexor tendon: entrapment, rupture and triggering. J Hand Surg Am. 1981;6:392-398.
11.
TakamiHTakahashiSAndoM.Triggering of the finger secondary to partial flexor tendon tear after closed direct injury. J Hand Surg Am. 1993;18:881-882.
12.
TohyamaMTsujioTYanagidaI.Trigger finger caused by an old partial flexor tendon laceration: a case report. Hand Surg. 2005;10:105-108.
