Staged opposition transfer

Area of Science:

• Orthopedics
• Hand Surgery
• Reconstructive Surgery

Background:

• Extensive hand and upper limb trauma can result in significant loss of median nerve and/or thenar muscle function.
• Severe palmar scarring and loss of thumb opposition (Kapandji stage 3) present considerable challenges in restoring hand function.
• Previous reconstructive methods may be insufficient for cases with extensive tissue loss and scarring.

Purpose of the Study:

• To evaluate the efficacy of a two-stage opposition transfer technique for patients with severe hand trauma and loss of thumb opposition.
• To assess the functional improvement in thumb opposition and overall hand function following the described surgical procedure.

Main Methods:

• A cohort of six patients with extensive hand trauma underwent a two-stage opposition transfer.
• Stage 1 involved the placement of a silicone rod to create a pseudosheath for the future tendon transfer.
• Stage 2 consisted of passing a donor tendon through the pseudosheath to reconstruct thumb opposition, with a minimum 1-year follow-up.

Main Results:

• All six patients demonstrated significant functional improvement after the two-stage opposition transfer.
• One patient achieved Kapandji stage 6 opposition, while the remaining five patients reached stage 7 or 8.
• The technique successfully restored useful thumb opposition in patients with previously debilitating hand function loss.

Conclusions:

• The two-stage opposition transfer using a silicone rod pseudosheath is an effective method for restoring thumb opposition in severe hand trauma.
• This reconstructive approach leads to substantial functional gains and improved quality of life for affected patients.
• The technique offers a viable solution for complex cases where conventional treatments may fail.