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Arch Hand Microsurg > Volume 19(1); 2010 > Article
Journal of the Korean Society for Surgery of the Hand 2010;19(1):12-20.
Published online May 31, 2010.
DOI: https://doi.org/10.12790/jkssh.2010.19.1.12   
Digital Replantation in Industrial Punch Injuries
Kyu Cheol Lee, M.D., Dong Chul Lee, M.D., Jin Soo Kim, M.D., Ph.D.,<br>Sae Hwi Ki, M.D., Ph.D., Si Young Roh, M.D., Ph.D., Jae Won Yang M.D.
Department of Plastic and Reconstructive Surgery, Kwangmyung Sung-Ae General Hospital, Kyungki-do, Korea. ophand@gmail.com
천공 펀치 기계에 의한 수지 절단부의 재접합술
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Purpose: Industrial punch accidents involving fingers cause segmental injuries to tendons and neurovascular bundles. Although multiple-level segmental amputations are not replanted to regain function, most patients with an amputated finger want to undergo replantation for cosmetic as much as functional reason. The authors describe four cases of digital amputation by an industrial punch that involved the reinstatement of the amputated finger involving a joint and neurovascular bundle. Amputated segments were replanted to restore amputated surfaces and distal segments.
Methods: A single institution retrospective review was performed. Inclusion criteria of punch injuries requiring replantation were applied to patients of all demographic background. Injury extent (size, tissue involvement), operative intervention, pre- and postoperative hand function were recorded.
Result: Four cases of amputations were treated at our institute from 2004 to 2008 from industrial punch machine injury. Average patient age was 32.5 years (25~39 years) and there were three males and one female. Sizes of amputated segments ranged from 1.0×1.0×1.2 cm3 to 3×1.5×1.6 cm3. Tenorrhaphy was conducted after fixing fractured bone of the amputated segments with K-wire. Proximal and distal arteries and veins were repaired using the through &amp; through method. The average follow-up period was thirteen months (2~26 months), and all replanted cases survived. Osteomyelitis occurred in one case, skin grafting after debridement was performed in two cases. Because joints were damaged in all four cases, active ranges of motion were much limited. However, a secondary tendon graft enhanced digit function in two cases. The two-point discrimination test showed normal values for both static and dynamic tests for three cases and 9 mm and 15 mm by dynamic and static testing, respectively, in one case.
Conclusion: Though amputations from industrial punch machines are technically challenging to replant, our experience has shown it to be a valid therapy. In cases involving punch machine injury, if an amputated segment is available, the authors recommend that replantation be considered for preservation of finger length, joint mobility, and overall functional recovery of the hand.
Key Words: Digital replantation, Amputated segment, Multiple-level injury, Industrial punch

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