Congenital Ulnar Carpal Bone Luxation in a Miniature Donkey Treated by Pancarpal Arthrodesis

Abstract

An 18-month-old miniature donkey was presented for evaluation and treatment of a left carpal valgus present since birth. Clinical examination confirmed the severe and unstable carpal valgus. Radiographs and computed tomography revealed a caudally luxated ulnar carpal bone, malformation of the distal radial epiphysis, as well as a complete collapse of the lateral part of the radiocarpal joint. Outward rotation of the limb distal to the joint collapse was also visible. Surgical treatment was elected and a pancarpal arthrodesis performed using two short 3.5 mm locking compression plates. Ten months later, the donkey was pasture sound and radiographs showed complete fusion of the carpal joints.

Keywords

donkey - pancarpal arthrodesis - carpal bone luxation - congenital abnormality - locking compression plates

Ethical Considerations

The owner of the donkey gave written consent for the surgery to be performed and for inclusion in potential studies. The Research Ethics Committee of the University approved this case report (project REC179–19).

• References

• 1 Muurlink T. Surgery of miniature horses. Equine Chapter Meeting at the ACVSc Science Week. Gold Coast, Queensland, Australia: John Chopin; 2012
• 2 Getman LM. Surgical treatment of severe, complex limb deformities in horses. Equine Vet Educ 2011; 23 (08) 386-390
• 3 Kelmer G, Wilson DA. Bilateral metatarsophalangeal arthrodesis for severe congenital flexor tendon laxity and metatarsophalangeal luxation in a miniature horse. Equine Vet Educ 2007; 19 (10) 547-550
• 4 Whitehair KJ, Adams SB, Toombs JP. , et al. Arthrodesis for congenital flexural deformity of the metacarpophalangeal and metatarsophalangeal joints. Vet Surg 1992; 21 (03) 228-233
• 5 Whitfield-Cargile C, Watkins JP. Bilateral distal radial epiphysectomy and pancarpal arthrodesis for correction of complex carpal deformities in an American Miniature horse. Equine Vet Educ 2011; 23 (08) 381-385
• 6 Levine DG, Richardson DW. Clinical use of the locking compression plate (LCP) in horses: a retrospective study of 31 cases (2004-2006). Equine Vet J 2007; 39 (05) 401-406
• 7 Lischer CJ, Auer JA. Arthrodesis techniques. In: Auer JA, Stick JA, Kümmerle JM, Prange T. , eds. Equine Surgery. 5th edition. Saint Louis: Elsevier; 2019: 1374-1398
• 8 Zubrod CJ, Schneider RK. Arthrodesis techniques in horses. Vet Clin North Am Equine Pract 2005; 21 (03) 691-711 , vii
• 9 Ross MW. The carpus. In: Ross MW, Dyson SJ. , eds. Diagnosis and Management of Lameness in the Horse. St. Louis, Missouri: Elsevier; 2011: 426-449
• 10 Curtiss AL, Goodrich LR, Rossignol F, Richardson DW. Pancarpal and partial carpal arthrodesis with 3 locking compression plates in 6 horses. Vet Surg 2018; 47 (05) 692-704
• 11 Lewis RD. Carpal Arthrodesis—Indications and Techniques. Proc Am Ass Equine Practnrs 2001; 47: 480-483
• 12 Bertone AL, Schneiter HL, Turner AS, Shoemaker RS. Pancarpal arthrodesis for treatment of carpal collapse in the adult horse. A report of two cases. Vet Surg 1989; 18 (05) 353-359
• 13 Brandenberger O, Rossignol F, Bartke S, Van Bergen T, Vitte A. Carpal arthrodesis using a minimally invasive approach and locking compression plates: three cases. Equine Vet Educ 2018; 30 (05) 229-236
• 14 Duan W, Lopez MJ. Bone Grafts and Bone Replacements. In: Auer JA, Stick JA, Kümmerle JM, Prange T. , eds. Equine Surgery. 5th edition. Saint Louis: Elsevier; 2019: 1314-1326
• 15 Barone R. Anatomie comparée des mammifères domestiques Tome 2–Arthrologie et myologie. 4th ed. Paris, France: Vigot; 2000: 991
• 16 Levine DG. The normal and abnormal equine neonatal musculoskeletal system. Vet Clin North Am Equine Pract 2015; 31 (03) 601-613
• 17 Miller A, Carmichael S, Anderson TJ, Brown I. Luxation of the radial carpal bone in four dogs. J Small Anim Pract 1990; 31 (03) 148-154
• 18 Pitcher GDC. Luxation of the radial carpal bone in a cat. J Small Anim Pract 1996; 37 (06) 292-295
• 19 Lee B-J, Kim S-S, Lee S-R, Jin J-M, Yoon MG, Moon M-S. Palmar scaphoid dislocation associated with dorsal perilunate dislocation: case report. J Hand Surg Am 2010; 35 (05) 726-731
• 20 Barr ARS, Hillyer MH, Richardson JD. Partial carpal arthrodesis for multiple carpal fractures and subluxation in a pony. Equine Vet Educ 1994; 6 (05) 255-258