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CC BY-NC-ND 4.0 · Indian J Plast Surg 2006; 39(02): 141-147
DOI: 10.1055/s-0039-1699145
Original Article
Association of Plastic Surgeons ofIndia

Four cases of variations in the forearm extensor musculature in a study of hundred limbs and review of literature

Mohandas K.G. Rao
Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal, India
,
Ramana Vollala Venkata
Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal, India
,
Bhat M. Seetharama
Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal, India
,
Bolla Sreenivas
Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal, India
,
Paul Samuel Vijay
Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal, India
,
Pamidi Narendra
Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal, India
› Author Affiliations
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Publication History

Publication Date:
14 May 2020 (online)

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ABSTRACT

All surgeons must bear in mind the existence of muscular variations when performing common tendon transfers. Presence of additional bellies and tendons of existing muscles or presence of additional muscles in unusual locations might misguide a surgeon, during surgery and also during diagnosis. In the present paper we are reporting four cases of variations encountered during the study of extensor muscles of the forearm in 100 limbs. In Case 1, additional bellies of extensor carpi radialis longus and extensor carpi radialis brevis and multiple tendons of insertion of abductor pollicis longus were observed in a single limb. In Case 2, an additional belly of the abductor pollicis longus was observed. In Case 3, a short muscle on the dorsum of the hand going to the index finger [extensor indicis brevis (EIB)] was found in addition to the normal extensor indicis (EI). It was also observed that some of the most superficial fleshy fibers of EIB were getting inserted into the tendon of EI. In Case 4, a rare incidence of extensor digiti medii proprius was observed. Further, the related literature is reviewed and the clinical and surgical importance of these muscular variations in diagnosis and proper planning of treatment is discussed.

KEY WORDS

Abductor pollicis longus - extensor carpi radialis brevis - extensor carpi radialis longus - extensor digiti medii proprius - extensor indicis brevis
 
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