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A simple approach to thumb amputation reconstruction at metacarpal base with toe transfer, two case reports
Viet Tan Nguyen1, Van Doan Le1, Viet Tien Nguyen1
1Upper Extremity Trauma and Microsurgery Department, 108 Military Central Hospital, 1 Tran Hung Dao Street, Hanoi, Viet Nam.
Introduction:
Reconstruction for thumb amputation at the metacarpal base by toe transfer is challenging. To restore a thumb with normal or near-normal length, the reconstruction plan usually involves a complicated and challenging process either in two stages (stage 1: resolving soft tissue and bone defect; stage 2: toe transfer) or a single stage by using two free flaps (one free soft tissue flap and one toe flap). However, is it necessary to restore the full length of the thumb for functional and aesthetic achievement?
Presentation Of Cases:
Two male patients (21 and 22 years old) had a thumb amputation at the metacarpal base. We accepted the shortened metacarpal length and performed reconstruction in one stage by trimmed great toe flap, at the level of the metatarsophalangeal joint. The first phalanx of toe flap was fused with the first metacarpal base. On long-term follow-up, both patients were able to return to daily activities, work and had a good cosmesis.
Discussion:
With our reconstruction technique, two reconstructed thumbs were functionally similar to a thumb amputation group 1 of Campbell-Reid. Using trimmed great toe flap, the tip of our reconstructed thumbs looks like that of a normal thumb. Both patients were satisfied.
Conclusion:
Accepting length shortening, the reconstruction for thumb amputation at the metacarpal base by toe transfer could be done more easily and simply in a single stage.
