CC BY-NC 4.0 · Arch Plast Surg 2015; 42(05): 614-618
DOI: 10.5999/aps.2015.42.5.614
Original Article

Short-Term Strength Deficit Following Zone 1 Replantations

Si Young Roh
Department of Plastic and Reconstructive Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea
,
Woo Cheol Shim
Department of Plastic and Reconstructive Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea
,
Kyung Jin Lee
Department of Plastic and Reconstructive Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea
,
Dong Chul Lee
Department of Plastic and Reconstructive Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea
,
Jin Soo Kim
Department of Plastic and Reconstructive Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea
,
Jae-Won Yang
Gangnam Jaejun Plastic Clinic for Hand and Plastic Surgery, Pyeongtaek, Korea
› Author Affiliations

Background Hand strength deficit following digital replantation is usually attributed to the mechanical deficiency of the replanted digit. Zone 1 replantation, however, should not be associated with any mechanical deficit, as the joint and tendon are intact. We evaluate short-term motor functions in patients who have undergone single-digit zone 1 replantation.

Methods A single-institution retrospective review was performed for all patients who underwent zone 1 replantation. Hand and pinch strengths were evaluated using standard dynamometers. Each set of measurements was pooled according to follow-up periods (within 1 month, 1 to 2 months, 2 to 3 months, and after 3 months). The uninjured hand was used as reference for measurements.

Results The review identified 53 patients who had undergone zone 1 replantation and presented for follow-up visits. Compared to the uninjured hand, dynamometer measurements revealed significantly less strength for the hand with replanted digit at one month. The relative mean grip, pulp, and key pinch strength were 31%, 46%, and 48% of the uninjured hand. These three strength measurements gradually increased, with relative strength measurements of 59%, 70%, and 78% for 4-month follow up.

Conclusions Despite the lack of joint or tendon injury, strength of the injured hand was significantly lower than that of the uninjured hand during the 4 months following replantation. Improved rehabilitation strategies are needed to diminish the short-term negative impact that an isolated zone 1 replantation has on the overall hand strength.

The authors thank Dr. Aram Harijan for his insight and assistance in the preparation of this manuscript.




Publication History

Received: 17 March 2015

Accepted: 01 June 2015

Article published online:
05 May 2022

© 2015. The Korean Society of Plastic and Reconstructive Surgeons. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonCommercial License, permitting unrestricted noncommercial use, distribution, and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes. (https://creativecommons.org/licenses/by-nc/4.0/)

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