ADDITIONAL HEAD OF ORIGIN OF FLEXOR POLLICIS LONGUS – A CASE REPORT
T. RAMESH RAO
Department of Preclinical Sciences, Faculty of Medical Sciences, The University of The West Indies, St. Augustine, Trinidad and Tobago
SURESH R. RAO *
Department of Preclinical Sciences, Faculty of Medical Sciences, The University of The West Indies, St. Augustine, Trinidad and Tobago
*Author to whom correspondence should be addressed.
Abstract
Occurrence of additional head of the flexor pollicis longus (FPL) muscle has been documented in the literature habitually. Additional head of FPL has been observed taking origin either from the lateral or medial border of the coronoid process and or also from the medial epicondyle of the humerus. During our routine dissection we noticed an unusual presence of additional tendinous slip of FPL muscle arising from the medial margin of the coronoid process of the ulna. However, such anomaly was not found on the left side. The embryological basis and clinical significance of current case is discussed.
Keywords: Flexor pollicis longus, accessory head, anomaly, tendon aplasia, thumb hypoplasia