Anatomic basis of the gastrocnemius perforator-based flap

Area of Science:

• Anatomy
• Plastic Surgery
• Reconstructive Surgery

Background:

• The gastrocnemius muscle is infrequently used as a musculocutaneous flap.
• Posterior calf skin can serve as a local or free flap source.
• Anatomic investigation of fascial perforators in the posterior calf is warranted.

Purpose of the Study:

• To investigate the possibility of elevating a gastrocnemius muscle perforator-based flap.
• To identify and characterize fascial perforators in the posterior calf region.
• To determine the feasibility of flap elevation without muscle sacrifice.

Main Methods:

• Anatomic study involving 10 fresh cadaveric specimens.
• Detailed examination of fascial perforators in the posterior calf.
• Analysis of perforator origins from sural arteries and muscle pedicles.

Main Results:

• At least two substantive perforators were identified in all limbs studied.
• A mean of 4.0 perforators (range: 2-7) were found, with one consistently overlying the medial gastrocnemius.
• Gastrocnemius perforator-based flaps are possible without muscle sacrifice in 90% of limbs.

Conclusions:

• The gastrocnemius muscle perforator-based flap is a feasible reconstructive option.
• Flap elevation can be achieved in most cases without sacrificing the gastrocnemius muscle.
• The posterior calf offers reliable perforator vessels for flap creation.