Multiple Tendons Variations were Observed in a Male Old Cadaver
Abstract
Background: Anatomical variations and arrangements of muscles have great importance in many clinical and surgical procedures.
Objectives: To record any anatomical variation during the complete dissection of a 75 years old male cadaver.
Methods: Complete dissection of a preserved embalmed male cadaver about 75 years old under guide of Cunnigham’s Manual of Practical Anatomy for academic year 2018-2019 undergraduate students, at the department of human anatomy at Napata College.
Result: Many anatomical variations were recorded during the dissection. There was agenesis of palmaris longus muscles in both sides, the abductors pollicis longus muscles, extensor digiti minimi muscles were presented with two tendons in both sides. Extensor digtorum tendons on the right side was doubled to the ring finger, there was no independent tendon to the little finger, the lateral tendon of the ring finger gave off intertendinous connection to the lateral tendon of extensor digiti minimi. Extensor digtorum tendons on the left side had four tendons the tendon for little finger was divided into two slips joining the ring tendon and medial tendon of extensor digit minimi. Moreover intertendinous connection of the extensor digitorum tendons in both sides was seen, between the little and ring fingers tendons of the left side while the medial tendon of the ring finger provided an intertendinous connection to middle finger on the right side.
Conclusion: Awareness of these anatomical variations has a significant importance in academic and clinical practice.
References
2. SA Roohi, L Choon-Sian, A Shalimar,GH Tan, AS Naicker, M Med Rehab . A Study on the Absence of Palmaris Longus in a Multiracial Population. Malaysian Orthopaedic Journal 2007; 1(1):p 26
3. Moore, Keith L. Pelvis and Perineum, Dalley, Arthur F. (2006). Clinically Oriented Anatomy.5th Edition. University of Toronto, Ontario, Canada. Lippincott Williams and Wilkins:p 800-810
4. Melling M, Wilde J, Schnallinger M, Schweighart W, Panholzer M. Supernumerary tendons of the abductor pollicis. Acta Anat (Basel) 1996;155(4):291-4.
5. G.A. Abdel-Hamid, R.A. El-Beshbishy, I.H. Abdel Aal. Anatomical variations of the hand extensors Folia Morphol 2013; 72( 3):pp. 249–257
6. El-Beshbishy RA, Abdel-Hamid GA. Variations of the abductor pollicis longus tendon: an anatomic study. Folia Morphol 2013; 72(2):161-6.
7. Jonathan S. Carlos, Emile Goubran, Samir Ayad . The presence of extensor digiti minimi muscle—anatomical variant. Journal of Chiropractic Medicine 2011; (10)100–104.
8. L. A. Enye, L. C. Saalu and A. A. Osinubi. The Prevalence of Agenesis of Palmaris Longus Muscle amongst Students in Two Lagos-Based Medical Schools. Int. J. Morphol 2010; 28(3):849-854.
9. 9. Ebrahim Nasiri, Mohsen Pourghasem, and Hassan Moladoust. The Prevalence of Absence of the Palmaris Longus Muscle Tendon in the North of Iran: A Comparative Study Iran Red Crescent Med J 2016 March; 18(3): e22465.
10. Nikola Vučinić, Mirela Erić, Mirjana Savić. How often absence of palmaris longus and functional deficiency of flexor digitorumsuperficialis occurs. Acta Orthop. Belg 2016, 82, 413-419.
11. Sarikcioglu L, Yildirim FB. Bilateral abductor pollicis longus muscle variation. Case report and review of the literature. Morphologie 2004; 88: 160–163.
12. Necdet Kocabiyik, Ilkan Tatar, Bulent Yalcin, Fatih Yazar and Hasan Ozan. Tendon variations of extensor digitorum and abductor pollicis longus muscles. International Journal of Anatomical Variations 2009; 2: 54–56.
13. Jerina Tewari, Pravash Ranjan Mishra, Sujit Kumar Tripathy. Anatomical variation of abductor pollicis longus in Indian population A cadaveric study. Indian J Orthop 2015 :49 ( 5);P : 549-553.
14. Zilber S, Oberlin C.(2004). Anatomical variations of the extensor tendons to the fingers over the dorsum of the hand: a study of 50 hands and a review of the literature. Plast Reconstr Surg 113:1:214-21
15. El-Badawi MG, Butt MM, al-Zuhair AG, Fadel RA. Extensor tendons of the fingers: arrangement and variations. Clin Anat 1995;8(6):391-8
16. Dass P, Prabhu LV, Pai MM, Nayak V, Kumar G, Janardhanan JP.A comprehensive study of the extensor tendons to the medial four digits of the hand. Chang Gung Med J 2011;34(6):612-9.
17. Hirai Y, Yoshida K, Yamanaka K, Inoue A, Yamaki K, Yoshizuka M.An anatomic study of the extensor tendons of the human hand J Hand Surg Am 2001 ;26(6):1009-15.
18. Willan PL, Humpherson JR. Conceps of Variation and normality in morphology: important tissues at risk of neglect in modern undergraduate medical courses. Clin Anat 1999; 12:186 – 190.
19. Troha F, Baibak G J, Kelleher J C. Frequency of the palmaris longus tendon in North American caucasians. Ann Plast Surg 1990; 25: 477-8.
20. Zeybek A, Gurunluoglu R, Cavdar S, Bayramiqli M. A clinical reminder: a palmaris longus muscle variation. Ann Plast Surg 1998; 41: 224-5.
