Diaphyseal proximal tibial angle
Diaphyseal proximal tibial angle
定义
骨干近端胫骨角(DPTA)(又称骨干胫骨轴/近端胫骨轴角)是一种用于评估胫骨解剖学特征及其在易感犬或有前十字韧带断裂风险犬中发生改变的测量指标。该角度通过胫骨内外侧位X线片确定。X线束以膝关节为中心,盆肢保持正常站立位关节角度。当股骨内侧髁与外侧髁相互重叠时,内外侧位投照视图被认为符合要求。
骨干近端胫骨角是近端胫骨轴与解剖胫骨轴(即骨干胫骨轴)之间的夹角。
以下为已发表的健康犬骨干近端胫骨角参考值:
体重 >20 kg 犬:4.1 +/- 2.2°(Osmond et al. 2016)
拉布拉多寻回犬:4.5 +/- 2.3°(Vedrine et al. 2013)
约克夏梗:10.8 +/- 4.3°(Vedrine et al. 2013)
小型犬:10.2 +/- 7.3°(Witte 2015)
參考資料
Osmond CS, Marcellin-Little DJ, Harrysson OL, Kidd LB. Morphometric assessment of the proximal portion of the tibia in dogs with and without cranial cruciate ligament rupture. Vet Radiol Ultrasound. 2006 Mar-Apr;47(2):136-41. doi: 10.1111/j.1740-8261.2006.00119.x. PMID: 16553144.
Vedrine B, Guillemot A, Fontaine D, Ragetly GR, Etchepareborde S. Comparative anatomy of the proximal tibia in healthy Labrador Retrievers and Yorkshire Terriers. Vet Comp Orthop Traumatol. 2013;26(4):266-70. doi: 10.3415/VCOT-12-02-0018. Epub 2013 Apr 24.
Witte PG. Tibial anatomy in normal small breed dogs including anisometry of various extracapsular stabilizing suture attachment sites. Vet Comp Orthop Traumatol. 2015;28(5):331-8. doi: 10.3415/VCOT-14-12-0186. Epub 2015 Jul 21. PMID: 26195139.