Gander Soares D, Allen M J, Burton N J
Wear Referrals Veterinary Hospital Bradbury, Stockton-on-Tees, TS21 2ES, UK.
Department of Veterinary Medicine, Surgical Discovery Centre, Cambridge, CB3 0ES, UK.
J Small Anim Pract. 2022 Nov;63(11):821-828. doi: 10.1111/jsap.13538. Epub 2022 Jul 20.
To estimate, using CT imaging, differences in the regional bone density of the humeral condyle in Labrador retriever elbows with and without medial coronoid process disease.
The elbows of Labrador Retrievers that had undergone CT were reviewed. Scans were divided into three categories: elbows without medial coronoid process disease; elbows with medial coronoid process disease involving fragmentation of the radial incisure; elbows with medial coronoid process disease involving fragmentation of the medial coronoid apex. A templating technique was employed to define the weight-bearing regions of the medial and lateral portion of the humeral condyle and estimates of volumetric bone density (defined by Hounsfield unit measurement) were compared across the three groups.
CT evaluation was performed on 122 elbows in 81 dogs. There was a higher mean Hounsfield unit measurement in the medial and lateral portions of the humeral condyles in elbows with medial coronoid process disease involving fragmentation of the medial coronoid apex compared with elbows with medial coronoid process disease involving fragmentation of the radial incisure.
Dogs with apical fragmentation of the medial coronoid process exhibited significantly higher estimated bone mineral density within the medial portion of the humeral condyle when compared to dogs with radial incisure fragmentation. The medial portion of the humeral condyle may be associated with the pathogenesis of apical but not radial incisure medial coronoid process fragmentation in Labrador Retrievers.
利用CT成像评估患有和未患有内侧冠状突疾病的拉布拉多猎犬肘部肱骨髁区域骨密度的差异。
回顾接受过CT检查的拉布拉多猎犬的肘部。扫描分为三类：无内侧冠状突疾病的肘部；内侧冠状突疾病累及桡切迹碎裂的肘部；内侧冠状突疾病累及内侧冠状突尖碎裂的肘部。采用模板技术定义肱骨髁内侧和外侧的负重区域，并比较三组的体积骨密度估计值（由亨氏单位测量定义）。
对81只犬的122个肘部进行了CT评估。与内侧冠状突疾病累及桡切迹碎裂的肘部相比，内侧冠状突疾病累及内侧冠状突尖碎裂的肘部肱骨髁内侧和外侧的平均亨氏单位测量值更高。
与桡切迹碎裂的犬相比，内侧冠状突尖碎裂的犬在肱骨髁内侧的估计骨矿物质密度显著更高。在拉布拉多猎犬中，肱骨髁内侧可能与内侧冠状突尖而非桡切迹内侧冠状突碎裂的发病机制有关。
