Fig 1.
Representative medial-lateral radiographs for one dog pre-operatively, immediate post operatively, and 4, 7, and 10 weeks post operatively.
Caudal femoral subluxation is apparent on the pre-operative medial-lateral view and is resolved on all subsequent medial-lateral views. The bone plate obscures approximately 50% of the osteotomy on the medial-lateral radiographic view. However, progressive radiographic healing can be seen anterior and posterior to the bone plate.
Fig 2.
Representative posterior-anterior radiographs for the same dog as in Fig 2 pre-operatively, immediate post operatively, and 4, 7, and 10 weeks post operatively.
Progressive radiographic healing of the osteotomy can be seen.
Fig 3.
The activated PRP immediately after it has formed a malleable gel and with placement into the distracted osteotomy.
Note that the osteotomy would be reduced and stabilized following distraction and PRP placement.
Fig 4.
Brightness mode ultrasonographic images for one dog at 4, 7, and 10 weeks following surgery.
Note the progressive healing of the osteotomy (arrows) over time.
Fig 5.
Power doppler ultrasonographic images for one dog at 4, 7, and 10 weeks following surgery.
Note the decreasing vascular density over time (small arrows) corresponding to progressive healing of the osteotomy (larger arrows).
Table 1.
Power Doppler ultrasonographic scoring scheme.
Fig 6.
Representative MRI images used for quantitative assessment of osseous healing and showing placement of the square regions of interest on the sagittal slices and in which the intensity was measured.
The corresponding white lines on the dorsal plane images demonstrate the location of the sagittal slice in which the ROI was drawn with regard to medial-lateral location. A) T2 Dixon fat suppressed sagittal plan sequence; B) Proton density weighted frontal plane sequence; C) T1 turbo spin echo sagittal plane sequence; D) Proton density weighted.
Table 2.
MRI sequence parameters.
Table 3.
Demographic data on dogs included in the study.
Measures of precision include the standard deviation followed by the range.
Table 4.
Summary of radiographic healing scores (5-point scale).
Table 5.
Summary of radiographic healing (12-point scale).
Table 6.
Summary of ultrasonographic assessment of cortical continuity (5-point scale).
Table 7.
Summary of ultrasonographic assessment of callus formation (5-point scale).
Table 8.
Summary of power doppler ultrasonographic assessment (5-point scale).
Table 9.
MRI assessment at 4 weeks.
Table 10.
P-values associated with each explanatory variable used in a repeated measures analysis of covariance.