Inflammation and arcing (BOWED TENDON) of the superficial flexor tendon (SDF)
Subject Areas : Veterinary Soft and Hard Tissue SurgerySaeed Azizi Mahmoodjigh 1 , Nima Mozafari 2 , Farshid Davoudi 3
1 - Academic member
2 - ُstudent
3 - Student
Keywords: superficial digital flexor tendon, SDFT, Bowed tendon, horse,
Abstract :
Among the flexor tendons in the horse's limbs, the superficial digital flexor tendon is more prone to damage than the deep digital flexor tendon. SDF tendonitis is a common injury in event horses. Recovery of superficial digital flexor tendon (SDFT) injuries is slow, but re-injury is likely. SDF tendon injuries are more common in the forelimb. Flexor tendon injuries are due to strain on the tendon or a direct trauma. Tendon damage vary from inflammation and pain to complete rupture of the tendon. Injuries caused by strain are associated with swelling that require ultrasound assessment to confirm the diagnosis. Treatment for these injuries includes anti-inflammatory treatment, which is initially followed by a rehabilitation program. In cases where drug treatment is not responsive, surgical procedures including tendon splitting and superior check ligament desmotomy can be used. In this study, we briefly review the tendonitis of the superficial digital flexor tendon, etiology, clinical signs, diagnosis, treatment and prognosis.
1. Dowling B, Dart A, Hodgson D, Smith R. Superficial digital flexor tendonitis in the horse. Equine veterinary journal. 2000;32(5):369-78.
2. Williams I, Heaton A, McCullagh K. Cell morphology and collagen types in equine tendon scar. Research in veterinary science. 1980;28(3):302-10.
3. Rooney JR, Genovese R. A survey and analysis of bowed tendon in Thoroughbred racehorses. Journal of Equine Veterinary Science. 1981;1(2):49-53.
4. Madison JB. Acute and chronic tendinitis in horses. The Compendium on continuing education for the practicing veterinarian (USA). 1995.
5. Baxter GM. Adams and Stashak's lameness in horses: John Wiley & Sons; 2020.
6. Chesen AB, Dabareiner RM, Chaffin MK, Carter GK. Tendinitis of the proximal aspect of the superficial digital flexor tendon in horses: 12 cases (2000–2006). Journal of the American Veterinary Medical Association. 2009;234(11):1432-6.
7. Smith R, Schramme M. Tendon injury in the horse: current theories and therapies. In Practice. 2003;25(9):529-39.
8. Goodship A. The pathophysiology of flexor tendon injury in the horse. Equine Veterinary Education. 1993;5(1):23-9.
9. Wilson A, Goodship A. Mechanical properties of the equine superficial digital flexor tendon. Journal of biomechanics. 1991;24(0006).
10. Patterson-Kane J, Parry D, Goodship A, Firth E. Exercise modifies the age-related change in crimp pattern in the core region of the equine superficial digital flexor tendon. New Zealand veterinary journal. 1997;45(4):135-9.
11. Patterson‐Kane J, Firth E, Goodship A, Parry D. Age‐related differences in collagen crimp patterns in the superficial digital flexor tendon core region of untrained horses. Australian veterinary journal. 1997;75(1):39-44.
12. Birch H, Smith T, Poulton C, Peiffer D, Goodship A. Do regional variations in flexor tendons predispose to site‐specific injuries? Equine veterinary journal. 2002;34(S34):288-92.
13. Ross MW, Genovese RL, Dyson SJ, Jorgensen JS. Superficial digital flexor tendonitis. Diagnosis and Management of Lameness in the Horse: Elsevier; 2011. p. 706-26.
14. Rantanen NW, McKinnon AO. Equine diagnostic ultrasonography: Williams & Wilkins; 1998.
15. Kasashima Y, Kuwano A, Katayama Y, Taura Y, Yoshihara T. Magnetic resonance imaging application to live horse for diagnosis of tendinitis. Journal of veterinary medical science. 2002;64(7):577-82.
16. Dyson S. Medical management of superficial digital flexor tendonitis: a comparative study in 219 horses (1992‐2000). Equine veterinary journal. 2004;36(5):415-9.
17. Gibson K, Burbidge H, Pfeiffer D. Superficial digital flexor tendonitis in Thoroughbred race horses: outcome following non‐surgical treatment and superior check desmotomy. Australian veterinary journal. 1997;75(9):631-5.
18. Allen A, editor Experience with ultrasound-guided tendon puncture or splitting. Proceedings of the annual convention of the American Association of Equine Practitioners (USA); 1993.
19. Webbon P. The racing performance of horses with tendon lesions treated by percutaneous tendon splitting. Equine veterinary journal. 1979;11(4):264-5.
20. Bramlage L, editor Surgical management of tendonitis and desmitis. P roceedings of the Dubai Equine International Symposium; 1996.
21. Smith RK. Mesenchymal stem cell therapy for equine tendinopathy. Disability and rehabilitation. 2008;30(20-22):1752-8. 22. Smith R, Birch H, Patterson‐Kane J, Firth E, Williams L, Cherdchutham W, et al. Should equine athletes commence training during skeletal development?: changes in tendon matrix associated with development, ageing, function and exercise. Equine Veterinary Journal. 1999;31(S30):201-9.
23. Hawkins J, Ross M. Transection of the accessory ligament of the superficial digital flexor muscle for the treatment of superficial digital flexor tendinitis in standardbreds: 40 cases (1988-1992). Journal of the American Veterinary Medical Association. 1995;206(5):674-8.
