Firth E C, Hodge H
Department of Veterinary Clinical Sciences, Massey University, Palmerston North, New Zealand.
Res Vet Sci. 1997 May-Jun;62(3):217-21. doi: 10.1016/s0034-5288(97)90193-4.
The possible relationship between physeal diseases and physeal form prompted investigation of change in steepness of the physis in young foals. The distal and proximal aspects of the longbones were sawn sagittally in the right and frontally in the left bones. The slabs were washed to remove saw debris, arranged in order and inspected. The proximal physes had a flat or gently arched form, without obvious inclination. In the distal physes there were distinct inclinations. Inspection of an identical slab from the medial aspect of the distal radius of two series of foals of different breeds showed that the degree of inclination of the physis with respect to the long axis of the bone increased with age. In a further series of foals, the angle of inclination was measured from radiographs of identical sagittal and frontal slabs of the distal radius. A line drawn through the secondary spongiosa was produced to intersect a line drawn along the physis where it was mostly steeply inclined, and the angle measured. The angle decreased (physeal inclination increased) with increasing age, up to 35-90 days. The steepness in the lateral aspect of the physis was similar to that in the medial aspect, although evident in a different plane.
骨骺疾病与骨骺形态之间的可能关系促使人们对幼驹骨骺倾斜度的变化进行研究。长骨的远端和近端在右侧沿矢状面锯开，在左侧沿额状面锯开。将骨片冲洗以去除锯屑，按顺序排列并检查。近端骨骺呈扁平或轻度拱形，无明显倾斜。远端骨骺有明显的倾斜。从不同品种的两窝幼驹的桡骨远端内侧观察相同的骨片，结果显示骨骺相对于骨长轴的倾斜度随年龄增加。在另一窝幼驹中，从桡骨远端相同矢状面和额状面骨片的X线片测量倾斜角度。通过次生骨小梁画一条线，使其与沿骨骺最陡倾斜处画的线相交，并测量角度。该角度随年龄增加而减小（骨骺倾斜度增加），直至35 - 90日龄。骨骺外侧的倾斜度与内侧相似，尽管在不同平面上表现明显。
