• Journal of Veterinary Clinics
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• v.31 no.2
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• pp.121-124
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• 2014

A 7-year-old, intact female Jindo dog was presented for assessment of weight-bearing lameness of the right hindlimb. On physical examination, crepitus and pain was noted in the right coxofemoral joint upon extension. Radiographs revealed a craniodorsal luxation of the right coxofemoral joint and degenerative joint disease (DJD) of both coxofemoral joints. Total hip replacement (THR) was performed for the right coxofemoral joint. Intraoperatively, dorsal acetabular rim (DAR) deficiency was noted, which can be related to a high risk for acetabular cup implant dislocation. Deficiency of the dorsal acetabular rim realigned with the acetabular cup using universal locking plate (ULP) and polymethylmethacrylate (PMMA) bone cement. After surgery, the patient had an uneventful course and a successful outcome. The ROM and thigh girth were dramatically improved. There were no complications associated with prosthesis implants. Hip luxation with dorsal acetabular rim deficiency in a dog was successfully repaired with THR and dorsal acetabular rim augmentation using ULP and PMMA bone cement. This technique should be considered when conventional THR is precluded by dorsal acetabular rim deficiency.

• Journal of Veterinary Clinics
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• v.29 no.1
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• pp.8-11
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• 2012

The results of surgical repair for pelvic factures in 31 dogs were reviewed. Lameness and weight bearing scores were used to evaluate functional recovery of the hind limbs. Simple fracture occurred in sacroiliac joint (n = 5) and ilium (n = 3). Pelvic fractures had acetabular (n = 7) and non-acetabular fractures (n = 23). Acetabular fracture cases were composed of additional surgical treatments with femoral head and neck ostectomy (FHNO) (n = 4) and only acetabular rim fixation (n = 3). Simple fractures had more rapid initial and complete recovery times than multiple fractures. Non-acetabular fracture cases (initial recovery time: 2.7 weeks, complete recovery time: 9.1 weeks) had more rapid initial and complete recovery times than acetabular fracture cases (8.4, 12.5 weeks) (p < 0.05). In addition, the cases of additional surgical treatment with FHNO (5.3, 7 weeks) had more rapid mean recovery times than surgical treatment without FHNO (11.1, 16.3 weeks). Surgical approach with FHNO in acetabular fracture was an alternative method to treat pelvic fractures in small breed dogs.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 1996.10a
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• pp.189-194
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• 1996

The modern orthopaedics frequently uses the total hip replacement in the artificial hip joint. The wear in this joint requires the re-replacement of the hip joint beacuse it is under the severe load and friction conditions. To solve these problems the previous studies have been mainly focused on the development of the new materials. The research of new material, however, needs much time and effort since it should be experimented for its bio-compatibility, friction, and wear characteristics. To reduce the work, in this study, the finite element analysis is applied to find the new combination of the materials in the total hip replacement which has the excellent contact characteristics. The finite element uses MARC and the 5-node aximetric element. The results show that in case of acetabulum UHMWP has good characteristics, in femoral head, the $Al_2O_3$, and in stem, Ti6Al4V.