Janovec Jan, Kyllar Michal, Midgley Duncan, Owen Martin
Jan Janovec, VRCC Veterinary Referrals, No. 1 Bramston Way, Southfields, Laindon, Essex SS15 6TP, United Kingdom, Phone: +44 1268 564 664, Fax: +44 1268 564 665, E-mail:
Vet Comp Orthop Traumatol. 2017 May 22;30(3):178-183. doi: 10.3415/VCOT-16-07-0115. Epub 2017 Mar 23.
To investigate the conformation of the proximal tibia in small breed dogs with and without cranial cruciate ligament disease (CCLD) and to identify morphologic abnormalities that may predispose to development of CCLD.
Mediolateral radiographs of the entire tibia of dogs <15 kg with surgically confirmed CCLD were retrospectively evaluated. Proximal tibial width (PTW), tibial plateau length (TPL), tibial plateau angle as described by Slocum and Slocum (sTPA), proximal tibial tuberosity angle (PTTA), tibial plateau angle as described by Inauen and colleagues (nTPA), and diaphyseal tibial width (DTW) were measured. The same variables were obtained from mediolateral radiographs of the entire tibia of dogs <15 kg without CCLD. In addition, a quotient nTPA/PTW, relative tibial tuberosity width (rTTW), and relative body weight (rBW) were calculated for each dog. Independent two-sample t-test (p = 0.05) was used to compare mean ± SD of all measured variables between the two groups.
Gender, age, and weight mean ± SD were not significantly different between the two groups of dogs (p <0.05). Dogs with CCLD had significantly greater sTPA (p = 0.015) and rBW (p = 0.016).
In dogs of small breeds, a combination of an excessively steep tibial plateau and an increased relative body weight may predispose to early CCLD development. The slope of the tibial plateau was found to be caused by an abnormal caudal angulation of the proximal tibia, a phenomenon previously associated with CCLD development in small breed dogs in individual cases.
研究患有和未患有颅交叉韧带疾病（CCLD）的小型犬胫骨近端的形态，并确定可能易患CCLD的形态学异常。
对体重<15kg且经手术确诊患有CCLD的犬的整个胫骨进行内外侧X线片回顾性评估。测量胫骨近端宽度（PTW）、胫骨平台长度（TPL）、Slocum和Slocum描述的胫骨平台角（sTPA）、胫骨近端结节角（PTTA）、Inauen及其同事描述的胫骨平台角（nTPA）以及胫骨干宽度（DTW）。从体重<15kg且未患CCLD的犬的整个胫骨的内外侧X线片中获取相同变量。此外，计算每只犬的nTPA/PTW商、相对胫骨结节宽度（rTTW）和相对体重（rBW）。使用独立双样本t检验（p = 0.05）比较两组之间所有测量变量的平均值±标准差。
两组犬的性别、年龄和体重平均值±标准差无显著差异（p<0.05）。患有CCLD的犬的sTPA（p = 0.015）和rBW（p = 0.016）显著更大。
在小型犬中，胫骨平台过度陡峭和相对体重增加的组合可能易患早期CCLD。发现胫骨平台的倾斜是由胫骨近端异常的尾侧成角引起的，这一现象在个别病例中先前与小型犬的CCLD发展有关。
