Dickomeit Mark Jan, Böttcher Peter, Hecht Silke, Liebich Hans-Georg, Maierl Johann
Kleintierklinik Bern, Vetsuisse Fakultät, University of Berne, 3012 Berne, Switzerland.
Am J Vet Res. 2011 Apr;72(4):491-9. doi: 10.2460/ajvr.72.4.491.
To investigate topographic and age-dependent adaptation of subchondral bone density in the elbow joints of healthy dogs by means of computed tomographic osteoabsorptiometry (CTOAM). Animals-42 elbow joints of 29 clinically normal dogs of various breeds and ages.
Subchondral bone densities of the humeral, radial, and ulnar joint surfaces of the elbow relative to a water-hydroxyapatite phantom were assessed by means of CTOAM. Distribution patterns in juvenile, adult, and geriatric dogs (age, < 1 year, 1 to 8 years, and > 8 years, respectively) were determined and compared within and among groups.
An area of increased subchondral bone density was detected in the humerus distomedially and cranially on the trochlea and in the olecranon fossa. The ulna had maximum bone densities on the anconeal and medial coronoid processes. Increased bone density was detected in the craniomedial region of the joint surface of the radius. A significant age-dependent increase in subchondral bone density was revealed in elbow joint surfaces of the radius, ulna, and humerus. Mean subchondral bone density of the radius was significantly less than that of the ulna in paired comparisons for all dogs combined and in adult and geriatric, but not juvenile, dog groups.
An age-dependent increase in subchondral bone density at the elbow joint was revealed. Maximal relative subchondral bone densities were detected consistently at the medial coronoid process and central aspect of the humeral trochlea, regions that are commonly affected in dogs with elbow dysplasia.
通过计算机断层扫描骨吸收测定法（CTOAM）研究健康犬肘关节软骨下骨密度的地形学和年龄依赖性适应性。动物——29只不同品种和年龄的临床正常犬的42个肘关节。
通过CTOAM评估肘关节肱骨、桡骨和尺骨关节面相对于水羟基磷灰石模型的软骨下骨密度。确定并比较幼年、成年和老年犬（年龄分别<1岁、1至8岁和>8岁）组内和组间的分布模式。
在滑车远端内侧和头侧的肱骨以及鹰嘴窝中检测到软骨下骨密度增加的区域。尺骨在肘肌突和内侧冠状突处具有最大骨密度。在桡骨关节面的颅内侧区域检测到骨密度增加。在桡骨、尺骨和肱骨的肘关节面中发现软骨下骨密度有显著的年龄依赖性增加。在所有犬的配对比较中，以及成年和老年犬组（但幼年犬组除外）中，桡骨的平均软骨下骨密度显著低于尺骨。
揭示了肘关节软骨下骨密度的年龄依赖性增加。在冠状突内侧和肱骨滑车中央部位持续检测到最大相对软骨下骨密度，这些区域在患有肘关节发育异常的犬中通常会受到影响。
