Darla K. Moser(1), Mike J. Schoonover(2,*), Kate M. Sippel(3), Alix M. Dieterly(4), Jerry W. Ritchey(4) and Corey R. Wall(2)
1 Desert Pines Equine Medical and Surgical Center, Las Vegas, Nevada, USA
2 Oklahoma State University, Center for Veterinary Health Sciences, Department of Veterinary Clinical Sciences, Stillwater Oklahoma, USA
3 Gulf Coast Veterinary Specialists, Houston, Texas, USA
4 Oklahoma State University, Center for Veterinary Health Sciences, Department of Veterinary Pathobiology, Stillwater Oklahoma, USA
This report describes fibrous cyst lining injection and extracorporeal shock wave therapy (ESWT) of a medial femoral condyle (MFC) subchondral cystic lesion (SCL) resulting in catastrophic MFC fracture in an Arabian mare. The mare was presented for evaluation of a severe hind limb lameness of approximately 4 months duration. On presentation, a non-weight bearing lameness of the left hind limb with severe effusion and soft tissue swelling of the stifle region was noted. Radiographic evaluation of the stifle revealed a large SCL of the MFC with associated osteoarthritis. Arthroscopic guided intra-lesional injection of the SCL with corticosteroids and autologous bone marrow concentrate was performed followed by ESWT of the MFC. The mare was discharged walking comfortably 48-hours post-operatively. An acute increase in lameness was noted 14 days post-operatively. Imaging revealed catastrophic fracture of the left MFC. Possible mechanisms leading to failure of the MFC secondary to the described treatment are discussed.
Keywords: Equine, Extracorporeal shock wave therapy, Intra-lesional injection, Stifle, Subchondral cystic lesion.
Moser, D.K., Schoonover, M.J., Sippel, K.M., Dieterly, A.M., Ritchey, J.W. and Wall, C.R. 2017. Catastrophic complication following injection and extracorporeal shock wave therapy of a medial femoral condyle subchondral cystic lesion in a 14 year old Arabian mare. Open Vet. J. 7(2), 111-116.