International Journal of Medical and Dental Sciences

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Variations of Pronator Teres Muscle. A Morphological Study


Affiliations
1 Punjab Institute of Medical Sciences Jalandhar, Punjab, India
2 Civil Hospital Kapurthala, Punjab, India
 

The muscles of shoulder girdle and elbow act together to position the hand accurately for manipulative functions. The superior extremity of man has undergone various modifications during evolution one of which is the lateral rotation of forelimbs at joints with pectoral girdle. The aim of the present study was to study the variations of pronator teres muscle. The present study was done on 60 upper limbs (56 Males and 4 Females) of embalmed adult human cadavers obtained from Deptt of Anatomy, Govt. Medical College Patiala. The humeral head of PT was found in all the cases, while Ulnar head was present in 52(86.7%) cases. The Humeral head was muscular in all the cases. The Ulnar origin was muscular in 15 cases (28.84%), tendinous in 7 cases (13.46%)&mixed in 30 cases (57.7%). In 2(3%) cases there was double humeral head and the median nerve was passing between them. In 3 cases(5%) there was high origin of humeral head of Pronator teres from medial intermuscular septum. Anatomy instructors and health professionals should be aware of the common variations in muscles and tendons of the forearm, not only for their academic interest but also for their clinical and functional implications.

Keywords

Pronator Teres, Humeral Head, Ulnar Head, Medial Intermuscular Septum, Coronoid Process, Entrapment Neuropathy.
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  • Variations of Pronator Teres Muscle. A Morphological Study

Abstract Views: 241  |  PDF Views: 132

Authors

Mamta Sharma
Punjab Institute of Medical Sciences Jalandhar, Punjab, India
Rajeev Prashar
Civil Hospital Kapurthala, Punjab, India

Abstract


The muscles of shoulder girdle and elbow act together to position the hand accurately for manipulative functions. The superior extremity of man has undergone various modifications during evolution one of which is the lateral rotation of forelimbs at joints with pectoral girdle. The aim of the present study was to study the variations of pronator teres muscle. The present study was done on 60 upper limbs (56 Males and 4 Females) of embalmed adult human cadavers obtained from Deptt of Anatomy, Govt. Medical College Patiala. The humeral head of PT was found in all the cases, while Ulnar head was present in 52(86.7%) cases. The Humeral head was muscular in all the cases. The Ulnar origin was muscular in 15 cases (28.84%), tendinous in 7 cases (13.46%)&mixed in 30 cases (57.7%). In 2(3%) cases there was double humeral head and the median nerve was passing between them. In 3 cases(5%) there was high origin of humeral head of Pronator teres from medial intermuscular septum. Anatomy instructors and health professionals should be aware of the common variations in muscles and tendons of the forearm, not only for their academic interest but also for their clinical and functional implications.

Keywords


Pronator Teres, Humeral Head, Ulnar Head, Medial Intermuscular Septum, Coronoid Process, Entrapment Neuropathy.

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DOI: https://doi.org/10.18311/ijmds%2F2014%2F81299