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  • Author or Editor: Jennifer K. Swiderski x
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Objective—To determine long-term outcome of distal femoral osteotomy as a component of treatment for distal femoral varus and medial patellar luxation in large-breed dogs.

Design—Retrospective case series.

Animals—12 dogs (16 stifle joints).

Procedures—Medical records and radiographs were reviewed to identify large-breed dogs with medial patellar luxation (grade ≥ 2) and femoral varus angle ≥ 12° treated with distal femoral osteotomy, with a minimum follow-up (by a veterinarian) of 18 months. Signalment, weight, medial patellar luxation and lameness grade, pre- and postoperative femoral varus angle, surgical technique, time to radiographic bone union, and complications were recorded. Follow-up with owners via questionnaire was performed > 18 months after surgery.

Results—16 corrective distal femoral osteotomies were performed with ancillary medial patellar luxation procedures in 12 dogs; 4 dogs had staged bilateral procedures. Mean ± SD preoperative and postoperative femoral varus angles were 16.3 ± 4.3° and 3.9 ± 2.5°, respectively. Mean ± SD time to radiographic union of the distal femoral osteotomy was 52.6 ± 13 days. One dog had Kirschner wire migration from the tibial tuberosity. Patellar luxation was not detected after surgery in any dog. Mean ± SD follow-up by a veterinarian was 1,335 ± 410 days and by use of an owner questionnaire was 1,497 ± 464 days. All 10 variables of owner-observed patient comfort and function were significantly improved.

Conclusions and Clinical Relevance—Distal femoral osteotomy in combination with traditional treatment provided predictable osteotomy healing, patellar stabilization, and long-term improvement in patient comfort and function when used to treat combined distal femoral varus and medial patellar luxation in large-breed dogs.

Full access
in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association


Objective—To determine the long-term survival rate and factors that affect survival time of domestic ferrets treated surgically for hyperadrenocorticism.

Study Design—Retrospective case series.

Animals—130 ferrets with hyperadrenocorticism that were treated surgically.

Procedures—Medical records of ferrets surgically treated for hyperadrenocorticism were reviewed. Data recorded included signalment, duration of clinical signs prior to hospital admission, CBC values, serum biochemical analysis results, anesthetic time, surgical time, concurrent diseases, adrenal gland affected (right, left, or both [bilateral]), histopathologic diagnosis, surgical procedure, caudal vena caval involvement (yes or no), postoperative melena (yes or no), days in hospital after surgery, and whether clinical signs of hyperadrenocorticism developed after surgery.

Results—130 ferrets were entered in the study (11 of 130 ferrets were admitted and underwent surgery twice). The 1- and 2-year survival rates were 98% and 88%, respectively. A 50% survival rate was never reached. Combined partial adrenal gland resection with cryosurgery had a significantly negative effect on survival time. No other risk factors were identified. Survival time was not significantly affected by either histopathologic diagnosis or specific affected adrenal gland (right, left, or bilateral).

Conclusions and Clinical Relevance—Ferrets with adrenal gland masses that were treated surgically had a good prognosis. Survival time of ferrets with hyperadrenocorticism undergoing surgery was not affected by the histologic characteristic of the tumor, the adrenal glands affected (right, left, or bilateral), or complete versus partial adrenal gland resection. Debulking was a sufficient surgical technique to allow a favorable long-term outcome when complete excision was not possible.

Full access
in Journal of the American Veterinary Medical Association