Variations of Pronator Teres Muscle. A Morphological Study


Mamta Sharma
Rajeev Prashar


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.


How to Cite
Sharma, M., & Prashar, R. (2014). Variations of Pronator Teres Muscle. A Morphological Study. International Journal of Medical and Dental Sciences, 3(2), 497–500.


  1. Tupper JW. Pollex abdutus due to congenital malposition of the flexor pollicis longus. The journal of Bone and Joint Surgery 1969 Oct; 51A (7):1285-9.
  2. Gray H, Williams PL, Bannister LH. Skeletal system. In: Williams PL, editor. Gray’s Anatomy. 38thed. New York: Churchill Livingstone; 2000.p.844-8.
  3. Hollinshead WH. Flexor Forearm. In Hollinshead WH editor. Functional Anatomy of the Limbs and Back. 2nd ed. Philadelphia: WB Saunders Company; 1960.p.141-51.
  4. Hollinshead WH. Arm, Elbow and Forearm. In: Hollinshead WH editor. Anatomy for surgeons Vol 3, 2nd ed. Philadelphia; Harper and Row; 1969.p.400-23.
  5. Nebot-Cegarra J, Perez Berruezo J, Reina de la Torre F. Variations of the pronator teres muscle: predispositional role to median nerve entrapment. Arch Anat Histol Embryol 1991-92;74:35-45.
  6. Jamieson RW, Anson BJ. The relation of the median nerve to the heads of origin of the pronator teres muscle: A study of 300 specimen. Quart Bull North western Univ M School 1952;26- 34.
  7. Anson BJ. Muscles of the forearm. In Anson BJ editor. An Atlas of Human Anatomy. WB Saunders company: Philadelphia; 1950.p.124-30.
  8. Dellon AL. Musculotendinous variations about the medial humeral epicondyle. J Hand Surg Br;1986 Jun;11(2):175-81.
  9. Gray H, Williams PL, Bannister LH . Muscles. In: Williams PL, editor. Gray’s Anatomy. 38thed. New York: Churchill Livingstone; 2000.p.862-4.

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