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Dual Mobility Cup for Revision of Dislocation of a Hip Prosthesis in a Dog with Chronic Hip Dislocation

  • Jaemin, Jeong (Department of Veterinary Surgery, College of Veterinary Medicine, Chungnam National University) ;
  • Haebeom, Lee (Department of Veterinary Surgery, College of Veterinary Medicine, Chungnam National University)
  • 투고 : 2022.10.27
  • 심사 : 2022.12.12
  • 발행 : 2022.12.31

초록

A 6-year-old, 36.5 kg castrated male Golden Retriever presented for revision surgery for left total hip replacement. The patient underwent removal of the cup and head implants due to unmanageable prosthetic hip dislocation, despite revision surgery. On physical examination, the dog showed persistent weight-bearing lameness after exercise of the left hindlimb with mild muscle atrophy. Radiographic examination revealed dorsolateral displacement of the femur with a remnant stem and bony proliferation around the cranial and caudal acetabulum rims. The surgical plan was to apply the dual mobility cup to increase the range of motion and jump distance to correct soft tissue elongation and laxity caused by a prolonged period of craniodorsal dislocation of the femur. The preparation of the acetabulum for cup fixation was performed with a 29-mm reamer, and the 29.5-mm outer shell was fixed with five 2.4-mm cortical screws. The head and medium neck of the dual-mobility system were placed on the cup, and the hip joint was reduced between the neck and stem. The dog exhibited slight weight bearing on a controlled leash walk the day after surgery. The patient was discharged 2 weeks postoperatively without any complications. Six months postoperatively, osseointegration and a well-positioned cup implant were observed, and the dog showed excellent limb function without hip dislocation until 18 months of phone call follow-up.

키워드

과제정보

This work was supported by Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through Companion Animal Whole Cycle Industialization Technology Development Program, funded by Ministry of Agriculture, Food and Rural Affairs (MAFRA) (322090).

참고문헌

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