Case report: the split flexor carpi ulnaris as a local muscle flap

Area of Science:

• Orthopedic Surgery
• Plastic Surgery
• Reconstructive Surgery

Background:

• The flexor carpi ulnaris (FCU) is a valuable local muscle flap for forearm and elbow reconstruction.
• Complete use of the FCU can lead to functional deficits in wrist flexion and ulnar deviation.

Purpose of the Study:

• To describe the clinical application of a split flexor carpi ulnaris muscle flap.
• To evaluate the feasibility of preserving wrist function while utilizing the FCU as a flap.

Main Methods:

• The flexor carpi ulnaris muscle was divided into its distinct ulnar and humeral neuromuscular compartments.
• The larger ulnar compartment was harvested as a local muscle flap.
• The humeral compartment was preserved to maintain wrist function.

Main Results:

• The split FCU flap allowed for successful reconstruction in two patients.
• Preservation of the humeral compartment maintained the palmar flexion and ulnar deviation capabilities of the wrist.

Conclusions:

• Splitting the flexor carpi ulnaris muscle is a viable technique for local flap reconstruction.
• This approach minimizes functional loss of the wrist, offering a significant advantage in reconstructive surgery.