Accessory slip of the extensor carpi radialis longus muscle

Bu çalışmada, 49 yaşındaki bir erkek kadavranın disseksiyonu esnasında gözlemlediğimiz extensor carpi radialis longus kasına ait nadir bir varyasyonu rapor ettik. Ekstensor carpi radialis longus kasının, ulnar taraftan ayrılan kısa bir karın parçası ve kasın asıl tendonunu üstten çaprazlayan uzun ve ince bir tendonu olan bir aksesuar bölümü tespit edildi ve birinci metakarpal kemiğin radiyal yüzü üzerindeki yapışma yerine kadar izlendi. Bu, anatomik varyasyonun embriyolojik gelişmesi irdelenerek klinik önemi tartışıldı.

Extensor carpi radialis longus kasının aksesuar tendomu

We report a rare variation of the extensor carpi radialis longus muscle, which was observed in a 49-year-old male cadaver during routine dissections. Am accessory slip of the extensor carpi radialis longus muscle with a short belly part arising from the ulnar side and a long, thin tendon extending to the radial side of the wrist crossing over the main tendon was found and traced up to its insertion point on the dorso-lateral side of the first metacarpal bone. An embryologic explanation is proposed for this anatomic variation and its clinic importance is discussed.

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1. Jackson WT, Viegas SF, Coon TM, Stimpson KD, Frogameni AD, Simpson JM. Anatomical variations in the first extensor compartment of the wrist. J. Bone Joint Surg [Am] 1986; 68: 923-926.
2. Abu-Hijleh MF. Extensor pollicis tertius: an additional extensor muscle to the thumb. Plast Reconstr Surg 1993; 92: 340-343.
3. Gümüsalan Y, Kalaycioglu A, Yazar F, Arifoglu Y, Sinav A. Accessory extensor carpi radialis muscle and interconnecting muscle bundle. Acta Anat 1997; 159: 57- 60.
4. Claassen H, Wree A. Multiple variations in the region of mm. extensores carpi radialis longus and brevis. Ann Anat 2002; 184: 489-91.
5. Williams PL, Warwick R, Dyson M, Bannister LH. Gray's Anatomy. 37th ed. London: Churchill Livingstone; 1989. p. 612-622.
6. von Schroeder HP, Botte MJ. Anatomy of the extensor tendons of the fingers: variations and multiplicity. J Hand Surg [Am] 1995; 20: 27-34.
7. Janevicius RV, Greager JA. The extensor carpi radialis longus muscle flap for anterior elbow coverage. J Hand Surg [Am] 1992; 17: 102-106.
8. Moore KL, Persaud TVN. The developing human, clinically oriented embryology. 6th ed. Philadelphia: WB Saunders; 1998. p. 426-428.
9. Gschwend N. Anatomische Varianten von muskeln und sehnen der hand, Handchir Mikrochir Plast Chir 1987; 19: 244-247.
10. Yoshida Y. Anatomical studies on the extensor carpi radialis longus and brevis muscles in Japanese. Okajimas Folia Anat Jpn 1994; 71: 127-135.
11. Khaledpour C, Schindelmeiser J. Atypical course of the rare accessory extensor carpi radialis muscle. J Anat. 1994; 184:161-163.
12. Albright JA, Linburg RM. Common variations of the radial wrist extensors. J Hand Surg [Am] 1978; 3: 134- 138.
13. Baek GH, Jung JM, Yoo WJ, Chung MS. Transfer of extensor carpi radialis longus or brevis for opponensplasty. J Hand Surg [Br] 1999; 24: 50-53.
14. Malaviya GN. Radial half of extensor carpi radialis longus tendon as graft to elongate muscle tendon unit for correction of finger clawing. Plast Reconstr Surg 2003; 111: 1914-1917.