Jankovits Daniel A, Liska William D, Kalis Russell H
Gulf Coast Veterinary Specialists, Houston, TX, USA.
Vet Surg. 2012 Jan;41(1):143-7. doi: 10.1111/j.1532-950X.2011.00925.x. Epub 2011 Dec 20.
To evaluate clinical outcome of small dogs with avascular necrosis (AVN) of the femoral head treated with Micro total hip replacement (THR).
Nonrandomized, retrospective efficacy case series.
Dogs (n = 7; 7 hips) that had Micro THR.
Medical records (December 2005-March 2009) of dogs affected with AVN treated with Micro THR were reviewed. Data analysis included age, sex, breed, body weight, and body condition. All dogs were evaluated at least 6 months after Micro THR was performed on the affected AVN limb. Physical, orthopedic, and radiographic examination, owner questionnaire, thigh girth, and ground reaction force were evaluated.
Seven dogs (7 Micro THR) met the inclusion criteria. Mean age at time of onset of clinical signs was 7.7 months and mean age at time of Micro THR was 9.6 months. Mean body weight was 4.2 kg. Median body condition score was 5.0 (range, 4-6). Mean cumulative functional scores from client questionnaires before (19.5; range, 11-25) and after Micro THR (8.2; range, 7-14) were significantly different (P = .004). There was no significant difference between thigh girths of the Micro THR (17.8 ± 2.6 cm; range, 14.5-21.5 cm) limbs when compared with contralateral (17.5 ± 2.9 cm; range, 14.5-22.0 cm) limbs (P = .38). Peak vertical force (P = .20), vertical impulse (P = .81), peak braking force (P = .91), braking impulse (P = .19), peak propulsion force (P = .32), and propulsion impulse (P = .19) were not significantly different in Micro THR limbs compared with contralateral limbs.
There was no relationship between age, sex, and breed for development of AVN in this study. Dogs that received Micro THR for the treatment of AVN had no significant differences in thigh girth and ground reaction forces when Micro THR limb was compared with the contralateral limb.
评估采用微型全髋关节置换术（THR）治疗的股骨头缺血性坏死（AVN）小型犬的临床结局。
非随机回顾性疗效病例系列。
接受微型THR的犬（n = 7；7个髋关节）。
回顾2005年12月至2009年3月接受微型THR治疗的AVN患犬的病历。数据分析包括年龄、性别、品种、体重和身体状况。所有犬在受影响的AVN肢体接受微型THR后至少6个月进行评估。评估体格检查、骨科检查、影像学检查、主人问卷、大腿围度和地面反作用力。
7只犬（7例微型THR）符合纳入标准。临床症状出现时的平均年龄为7.7个月，微型THR时的平均年龄为9.6个月。平均体重为4.2 kg。身体状况评分中位数为5.0（范围4 - 6）。主人问卷中微型THR前（19.5；范围11 - 25）和微型THR后（8.2；范围7 - 14）的平均累积功能评分有显著差异（P = .004）。微型THR肢体（17.8 ± 2.6 cm；范围14.5 - 21.5 cm）与对侧肢体（17.5 ± 2.9 cm；范围14.5 - 22.0 cm）的大腿围度无显著差异（P = .38）。微型THR肢体与对侧肢体相比，垂直峰值力（P = .20）、垂直冲量（P = .81）、制动峰值力（P = .91）、制动脉冲（P = .19）、推进峰值力（P = .32）和推进冲量（P = .19）无显著差异。
本研究中AVN的发生与年龄、性别和品种无关。接受微型THR治疗AVN的犬，微型THR肢体与对侧肢体相比，大腿围度和地面反作用力无显著差异。
