Article Text

Download PDFPDF
Treatment of a coxofemoral luxation secondary to upward fixation of the patella in a Shetland pony
  1. P. D. Clegg, MA, VetMB, CertEO, MRCVS1,1 and
  2. R. J. Butson, BVSc, CertVA,CertES(orth), MRCVS1
  1. 1 Department of Farm Animal and Equine Medicine and Surgery, Royal Veterinary College, Hawkshead House, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire AL9 7TA


A nine-year-old Shetland pony gelding, with a history of recurrent upward fixation of the patella, suddenly developed severe lameness in its right hindlimb. A luxation of the coxofemoral joint was diagnosed by a clinical and radiographic examination. The initial treatment of the luxation by closed reduction was not maintained, and the limb was placed in an Ehmer sling for four days after a second closed reduction. This allowed the femoral head to remain in the acetabulum, although a persistent subluxation remained, presumably owing to a rupture of the round ligament. The pony remained comfortable at pasture for over two years after the reduction, until osteoarthritis of the coxofemoral joint caused it to become severely lame and it had to be euthanased.

Statistics from


  • Mr Clegg's present address is Department of Veterinary Clinical Science and Animal Husbandry, University of Liverpool Veterinary Field Station, Leahurst, Neston, South Wirral L64 7TE

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.