S. Murat TAĞIL, Aysun UZ, S. Tuna KARAHAN

Dört başlı M. Pronator teres olgusu

Yaptımız çalışmada yetişkin bir erkek kadavranın sol önkolunda dört başlı m. pronator teres olgusuna rastlandı . Kasın birinci ve ikinci başı m.flexor carpi radialis ile birlikte humerus' un epicondylus medialis'inden, üçüncü başı condylus humeri'nin medialinden ve dördüncü başı da ulna nın proksimalinden başlamaktayd . N. medianus ön kola bu kas üçüncü ve dördüncü başları nın arasından geçerek girmekteydi. M. pronator teres'in varyasyonlarının bilinmesi ve n. medianus'un bu kas ile ilişkisi özellikle "pronator sendromu" olgularının değerlendirilmesinde klinik olarak önemlidir.

A case of pronator teres muscle with four heads

In our study we found pronotor teres muscle with four heads in the forearm of an adult male cadaver. The first and the second heads of the muscle were originated from the epicondylus medialis of humerus with the flexor carpi radialis muscle, the third head was originated from the condylus medialis of humeri while the fourth one was originated from the proximal part of the ulna. N. medianus entered to the forearm between the third and fourth heads of the muscle. Knowing the variations of m.pronator teres and the relationship between the n. medianus and the muscle is clinically very important to evaluate the cases with "pronator syndrome".

PDF

___

1. Anto C, Aradhya P. Clinical diagnosis of peripheral nerve compression in the upper extremity. Orthopedic Clinics of North America 1996;27 (2):227-236.
2. Haussmann P, Patel MR. Intraepineurial constriction of nerve fascicles in pronator syndrome and anterior interosseus nerve syndrome. Orthopedic Clinics of North America 1996;27 (2):339-344
3. Moore KL. Clinically Oriented Anatomy. 15th Edition. Williams and Wilkins, Canada, 1999:737, 757.
4. Olehnik KW, Manske PR, Szerzinski J, Lous St. Median nerve compression in the proximal forearm. The Journal of Hand Surgery 1994;19A, No:1.:121-126.
5. Arıncı K, Elhan A (1). Anatomi. 1. Cilt. 2. Baskı. Ankara, 1997:236.
6. Gray's H. Pick TP (ed), Howeden R (ed). Anatomy Descriptive and Surgical. 15 Edition. Chancellor. Great Britain, 1994: 364.
7. Arıncı K, Elhan A (2). Anatomi. 2. Cilt. 2. Baskı. Ankara, 1997:216-219.
8. Haymaker V, Woodhal B. Nerve Injuries. 2nd Ed. (Peripheral), Sounders, Philadelphia, 1953:240.
9. Tsai TM, Syed SA. Transvers skin incision approach for decompression of pronator teres syndrome. The Journal of hand Surgery 1994;19B, No 1:40-42.
10. Werner CO, Rosen I, Thorngren KG. Clinical and neurophysiologic characteristics of the pronator syndrome. Clinical Orthopaedics and Related Research1985;197:231 -236.
11. Lacey SH, Soldatis JJ. Bilateral pronator syndrome associated with anomalous heads of the prona¬tor teres muscle:A case report. . The Journal of hand Surgery 1994;18A (1):349-351.
12. Tulwa N, Limb D, Brown RF. Median nerve com- pression within the humeral head of pronator teres. The Journal of hand Surgery 1994;19B, No: 6:709-710.