Acute pelvic limb lameness in a dog following a fall.

نویسندگان

  • Tom Smith
  • Jennifer Warnock
چکیده

Discussion Differential diagnoses included chip fracture of the patella, femur or tibia, or an avulsion fracture of a ligament insertion. Based on location and cranial-caudal instability, avulsion of the origin of the cranial cruciate ligament was considered most likely, with concurrent lateral collateral ligament sprain, and potential further intra-articular damage. Exploratory surgery of the stifle joint was performed to confirm the origin of the bone fragment and allow treatment. Findings included grade II lateral collateral ligament sprain, avulsion of the origin of the cranial cruciate ligament, and maceration of the axial portion of the medial meniscus that was debrided (1). In addition, there was full thickness cartilage loss of the medial femoral condyle and corresponding proximal tibial plateau that was micro-picked. The small size of the bone fragment precluded internal fixation and the CrCL was transected at its insertion and submitted for histological examination ( Fig. 2). The joint was stabilized by placement of a prosthetic lateral collateral ligament and paired lateral and medial fabellar sutures. Avulsion of the cranial cruciate ligament, which has been rarely reported in the dog, typically occurs in the young or skeletally immature dog where the ligament tends to be stronger than bone (2–6). In the older dog, traumatic rupture of the cranial cruciate typically occurs instead of avulsion, commonly in association with other stifle derangement injuries. Nevertheless, avulsion of the origin has been reported bilaterally in one dog and partially in another (4, 5). Treatment involves fixation of the bone fragment where feasible, combined with symphodesis in skeletally immature dogs, or resection of the bone fragment and passive stabilization of the stifle joint if the bone fragment is considered too small for reconstruction (2–6). Assessment of concurrent injuries of the stifle joint is mandatory. Prognosis is dependant upon concurrent injuries but is considered fair. Diagnosis Traumatic avulsion of the origin of the cranial cruciate ligament, and concurrent stifle joint injuries.

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عنوان ژورنال:
  • Veterinary and comparative orthopaedics and traumatology : V.C.O.T

دوره 24 3  شماره 

صفحات  -

تاریخ انتشار 2011