The lumbrical muscle flap: anatomic study and clinical application

Area of Science:

• Hand surgery
• Anatomy
• Microsurgery

Background:

• Lumbrical muscles are intrinsic muscles of the hand.
• Their anatomical and vascular characteristics are crucial for reconstructive potential.

Observation:

• Anatomical and radiologic studies were conducted on 20 fresh human cadaver hands.
• Only the first and second (radial) lumbrical muscles were identified as suitable for flap transposition.
• Vascular supply originates from the superficial palmar arch and common palmar digital artery, entering at the proximal and middle third junction.

Findings:

• The radial lumbrical muscles can be pedicled on their dominant vascular supply.
• Transposition allows coverage of the entire palm up to the wrist flexion crease.
• Clinical application in two patients demonstrated successful coverage of the median nerve and its palmar branches.

Implications:

• Lumbrical muscle flaps represent a valuable reconstructive option in hand surgery.
• This technique can be utilized for nerve coverage and soft tissue reconstruction in the palm.
• Further research can explore expanded applications of lumbrical muscle flaps.