Effect of the Centre of Rotation in Tibial Plateau Levelling Osteotomy on Quadriceps Tensile Force: An Ex Vivo Study in Canine Cadavers
| Autor: | Yasushi Hara, Shuji Suzuki, Yoshiyuki Ochi, Takuya Yogo, Nobuo Kanno, Tom Ichinohe, Yasuji Harada, Takaharu Hakozaki |
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| Rok vydání: | 2019 |
| Předmět: |
040301 veterinary sciences
medicine.medical_treatment Plateau (mathematics) Osteotomy Quadriceps Muscle 0403 veterinary science Cruciate ligament 03 medical and health sciences Centre of rotation Dogs Cadaver Tensile Strength Ultimate tensile strength medicine Animals Displacement (orthopedic surgery) 030304 developmental biology Orthodontics 0303 health sciences General Veterinary Tibia business.industry Patellar ligament 04 agricultural and veterinary sciences musculoskeletal system Biomechanical Phenomena medicine.anatomical_structure Animal Science and Zoology business |
| Zdroj: | Veterinary and comparative orthopaedics and traumatology : V.C.O.T. 32(2) |
| ISSN: | 2567-6911 |
| Popis: | Objective The aim of this study was to determine the effect of the centre of rotation in tibial plateau levelling osteotomy (TPLO) on the tensile force of the quadriceps. Materials and Methods Tibial plateau levelling osteotomy was performed on the left pelvic limbs from 20 normal adult Beagle cadavers. To replicate the tensile force of the quadriceps, gastrocnemius and stifle flexor muscles, these muscles were replaced with wires. The tensile force of each wire, cranial tibial displacement and internal tibial rotation were measured under the following conditions: intact cranial cruciate ligament, transected cranial cruciate ligament, ideally centred osteotomy TPLO (ICO group) and distally centred osteotomy TPLO (DCO group). The ratios of the tensile forces for the wires divided by the vertical force were used for analyses. Results The mean intact and post-TPLO tibial plateau angles (TPA) in the ICO group were 30.3° ± 1.9° and 6.1° ± 1.6°, respectively, and those in the DCO group were 29.8° ± 2.4° and 6.8° ± 0.9°, respectively. The mean quadriceps tensile force after TPLO was significantly greater in the DCO group (3.9 ± 0.3) than the ICO group (3.3 ± 0.4) (p = 0.006). Both groups exhibited tibial caudal displacement after TPLO. Clinical Relevance The tensile force of the quadriceps muscles changed in accordance with the centre of the osteotomy in TPLO. The DCO group had increased tensile force, which may cause patellar ligament thickening after TPLO. Setting the postoperative TPA at 6° may cause excessive rotation in patients with a normal tensile force of the stifle flexor muscles. |
| Databáze: | OpenAIRE |
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