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KMID : 1094020200370030135
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Journal of Veterinary Clinics
2020 Volume.37 No. 3 p.135 ~ p.140
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Clinical Results of Distal Femoral Osteotomy for Treatment of Grade 4 Medial Patella Luxation with Concurrent Distal Femoral Varus in Small Breeds Dogs: 13 Cases
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Roh Yoon-Ho
Jung Jin-Ho
Lee Je-Hun
Jeong Jae-Min
Jeong Seong-Mok
Lee Hae-Beom
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Abstract
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The purpose of this study was to determine the outcome of distal femoral osteotomy for distal femoral varus and medial patellar luxation (MPL) grade 4 in small-breed dogs. Radiographs and medical records were reviewed to collect data and plan the surgery in small-breed dogs with MPL grade 4. Computed tomography (CT) imaging was also performed in cases of severe bone deformities. Signalment, weight, medial patellar luxation and lameness grade, radiographic bone union, complications, pre- and postoperative femoral varus angle, passive range of motion, static weight bearing distribution and visual analogue scale scores were recorded. Thirteen corrective distal femoral osteotomies were performed with ancillary and additional procedures in 9 dogs; 4 dogs had staged bilateral procedures; and four stifles were suspected to have partial or complete rupture of the cranial cruciate ligament. One stifle underwent patellar groove replacement. The mean ± SD pre- and postoperative femoral varus angles were 109.15°± 3.71° and 96.30°± 2.97°, respectively. Significant improvements in passive range of motion, thigh circumference and visual analogue scale (VAS) scores were observed. There was no reluxation of the patella. This study suggests that distal femoral osteotomy with traditional and additional procedures provided satisfactory outcomes in patient healing and functional recovery in small-breed dogs with excessive femoral varus angles.
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KEYWORD
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distal femoral osteotomy , Femoral varus angle , Medial patellar luxation , Small-breed dogs
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