Araújo F A P, Rahal S C, Doiche D P, Machado M R F, Vulcano L C, Teixeira C R, El-Warrak A O
Department of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), PO Box 560, Rubião Júnior s/n, Botucatu, SP, 18618-000 Brazil.
Vet Comp Orthop Traumatol. 2010;23(6):439-43. doi: 10.3415/VCOT-10-01-0009. Epub 2010 Sep 9.
To evaluate the hindlimbs of pacas bred in captivity using radiographic and computed tomography (CT) studies.
Nine mature pacas (Cuniculus paca) 5.9-8.2 kg in body weight.
Radiographical aspects of the bones of the hindlimbs were evaluated, and the Norberg angle and inclination angle were measured for each hindlimb. Anteversion angle were measured in CT examination.
The bone anatomy of the hindlimb of the paca was similar to that of the guinea pig, apart from two lunulae and a single fabella (lateral) which were observed. The Norberg angle had mean value of 130.56º ± 3.81 without any significant difference between testers. Inclination angles ranged from 142.44º ± 4.82 to 145.44º ± 4.09 by Hauptman's method, and from 144.94º ± 3.13 to 148.22º ± 3.25 by Montavon's method, for right and left hindlimbs respectively. Average values for the anteversion angles measured with CT ranged from 28.56º ± 5.56 to 32.91º ± 2.62.
The data may be used in future studies comparing the paca to other rodent species. In addition, the paca could be used as an animal model in orthopaedic research.
通过放射学和计算机断层扫描（CT）研究评估圈养水豚的后肢。
9只体重5.9 - 8.2千克的成年水豚（水豚属）。
评估后肢骨骼的放射学特征，测量每只后肢的诺伯格角和倾斜角。在CT检查中测量前倾角度。
水豚后肢的骨骼解剖结构与豚鼠相似，但观察到有两个小月牙骨和一个（外侧的）单一豆状骨。诺伯格角的平均值为130.56°±3.81°，测试者之间无显著差异。通过豪普特曼方法，右后肢和左后肢的倾斜角分别为142.44°±4.82至145.44°±4.09，通过蒙塔冯方法分别为144.94°±3.13至148.22°±3.25。CT测量的前倾角度平均值为28.56°±5.56至32.91°±2.62。
这些数据可用于未来将水豚与其他啮齿动物物种进行比较的研究。此外，水豚可作为骨科研究的动物模型。
