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Late Repair of Flexor Tendon Lacerations Within the Digital Sheaths.
PURPOSE: This article presents the outcomes of repairs of flexor tendon lacerations within digital sheaths performed more than 2 weeks after injury.
METHODS: A retrospective review of 46 patients; 37 with finger lacerations involving a total of 54 severed tendons in 42 fingers and nine with thumb lacerations of the flexor pollicis longus (FPL). In those patients with finger lacera- tions, 30 lacerations were isolated to the flexor digitorum profundus (FDP; 17 in Zone I and 13 in Zone II), and 12 involved both FDP and flexor digitorum superficialis (FDS) for a total of 24 tendon lacerations.
RESULTS: The delay in surgery for finger lacerations ranged from 2 to 96 weeks (average: 8.5 weeks) and for thumb lacerations, 2 to 17 weeks (average: 5.5 weeks). In Zone I finger lacerations, postoperative flexion of the distal interphalangeal (DIP) joint averaged 35° with 82% of patients regaining total active motion (TAM) in the good to excellent range. In Zone II injuries isolated to the FDP tendon, postoperative DIP joint flexion averaged 36.5° with 73% of patients regaining good to excellent TAM. In Zone II injuries involving both flexor tendons, final average DIP flexion was 37° with only 45% of patients regaining good to excellent TAM. All patients with FPL lacerations regained at least 30° (average: 46°) of active interphalangeal joint flexion.
CONCLUSION: When certain conditions exist that are deter- mined at surgery, delayed repairs of isolated FDP lacera- tions in fingers and FPL lacerations in thumbs can restore satisfactory mobility. Results are less favorable when both flexor tendons in the finger are lacerated and only the FDP repaired.
METHODS: A retrospective review of 46 patients; 37 with finger lacerations involving a total of 54 severed tendons in 42 fingers and nine with thumb lacerations of the flexor pollicis longus (FPL). In those patients with finger lacera- tions, 30 lacerations were isolated to the flexor digitorum profundus (FDP; 17 in Zone I and 13 in Zone II), and 12 involved both FDP and flexor digitorum superficialis (FDS) for a total of 24 tendon lacerations.
RESULTS: The delay in surgery for finger lacerations ranged from 2 to 96 weeks (average: 8.5 weeks) and for thumb lacerations, 2 to 17 weeks (average: 5.5 weeks). In Zone I finger lacerations, postoperative flexion of the distal interphalangeal (DIP) joint averaged 35° with 82% of patients regaining total active motion (TAM) in the good to excellent range. In Zone II injuries isolated to the FDP tendon, postoperative DIP joint flexion averaged 36.5° with 73% of patients regaining good to excellent TAM. In Zone II injuries involving both flexor tendons, final average DIP flexion was 37° with only 45% of patients regaining good to excellent TAM. All patients with FPL lacerations regained at least 30° (average: 46°) of active interphalangeal joint flexion.
CONCLUSION: When certain conditions exist that are deter- mined at surgery, delayed repairs of isolated FDP lacera- tions in fingers and FPL lacerations in thumbs can restore satisfactory mobility. Results are less favorable when both flexor tendons in the finger are lacerated and only the FDP repaired.
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