Tendon versus nerve transfers - balancing hand function in upper extremity high nerve injuries

Area of Science:

• Orthopedics
• Neurosurgery
• Reconstructive Surgery

Background:

• High peripheral nerve injuries disrupt muscle balance, leading to significant loss of strength, coordination, and dexterity.
• While primary nerve repair is optimal, outcomes in high-level reconstruction are unpredictable due to muscle atrophy from prolonged denervation.
• Existing reconstructive strategies like tendon and nerve transfers have limitations, including compromised muscle function and prolonged reinnervation periods.

Purpose of the Study:

• To review current opportunities and challenges in hybrid reconstructive strategies for high upper extremity peripheral nerve injuries.
• To compare the biomechanical principles, indications, and limitations of tendon transfers, nerve transfers, and combined approaches.
• To emphasize the importance of timing, patient selection, and functional goals in managing these complex injuries.

Main Methods:

• Expert opinion review of existing literature and clinical practices.
• Comparative analysis of tendon transfers, nerve transfers, and hybrid approaches.
• Discussion of biomechanical principles, surgical indications, and patient selection criteria.

Main Results:

• Tendon transfers offer predictable, early movement restoration but may affect muscle balance and fine motor control.
• Nerve transfers preserve physiological movement but require significant time for reinnervation and are patient-dependent.
• Hybrid approaches integrate tendon and nerve transfers to potentially combine their advantages, offering a promising avenue for improved functional recovery.

Conclusions:

• Hybrid reconstructive strategies represent an evolving approach to managing high upper extremity peripheral nerve injuries.
• Careful consideration of timing, patient factors, and specific functional goals is crucial for optimizing outcomes with any reconstructive technique.
• Further research and clinical evaluation are needed to fully establish the efficacy and long-term benefits of hybrid reconstructive strategies.