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KMID : 1094020220390030093
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Journal of Veterinary Clinics
2022 Volume.39 No. 3 p.93 ~ p.99
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Radiographic Comparison of Cranial Tibial Wedge Osteotomy versus Tibial Plateau Leveling Osteotomy: A Cadaveric Study
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Lee Ji-Yoon
Kim Dong-Wook
Oh Hye-Jong
Lee Sung-In
Choi Seok-Hwa
Kim Gon-Hyung
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Abstract
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The present study was performed to compare cranial tibial wedge osteotomy (CTWO) and tibial plateau leveling osteotomy (TPLO) through radiographic evaluation. The experiment was conducted with five cadaver dogs [mean (± SD) weight, 32.9 ± 4.1 kg; mean (± SD) age, 6 ± 2 years; three males and two females] euthanized for reasons unrelated to this study. The cadaver dogs consisted of German Shepherd (n = 3), Belgian Malinois (n = 1), and mixed breed (n = 1). CTWO and TPLO were carried out by the standard surgical method. Radiographic evaluation was performed by comparing several factors, including the flexion and extension angles, the anatomical mechanical axis angle (AMA-angle), tibial length, patellar height measurement using the Labelle-Laurin method, mechanical medial proximal tibial angle (mMPTA), mechanical medial distal tibial angle (mMDTA), and frontal plane alignment (FPA). Both the CTWO and the TPLO groups showed significantly increased flexion angles after surgery. Only the CTWO group had significantly increased extension angle. Although both groups showed significant decreases in the AMA-angle, the mechanical axis moved cranially against the anatomical axis only in the CTWO group. The patellar height was significantly lowered in the CTWO group. No significant differences were found in mMPTA, mMDTA, or FPA. In conclusion, radiographic comparison revealed more changes in CTWO group than in TPLO group.
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KEYWORD
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cranial tibial wedge osteotomy, tibial plateau leveling osteotomy, cranial cruciate ligament rupture, dog
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