According to the Mathes and Nahai classification of muscle flaps based on their vascular anatomy, which of the following muscles is classified as Type I, supplied by a single dominant vascular pedicle?

• A Tibialis anterior
• B Gracilis
• C Sartorius
• D Gastrocnemius ✓

Explanation

The Mathes and Nahai system grades muscles by pedicle pattern: Type I has one vascular pedicle (gastrocnemius), Type II has a dominant pedicle plus minor pedicles (gracilis), Type IV has multiple segmental pedicles (sartorius), and Type V has one dominant and one secondary pedicle (latissimus dorsi, pectoralis major). Sartorius as a segmentally supplied Type IV muscle tolerates only limited mobilization, making it a poor flap choice.

Reference: Grabb and Smith's Plastic Surgery, 8th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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