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< Back Computer Tomography (CT) Scan Case Study #16 史納莎, Schnauzer
Clinical History:
2 months history of righthind intermittent non-weight bearing lameness.Progressive muscle wasting at righthind.Stifle painful at extension.
Diagnostic interpretation:
There is evidence of diffuse muscular wastage involving all muscles of the right leg and thigh. No signs of mass effect or obvious thickening of the femoral nerve. All nerve roots of the pelvic plexus cannot be assessed. The lateral fabella of the right stifle is irregular in shape with the presence of 2 small fragments adjacent to it. A rectangular fragment 2mm X 6mm is present caudal to the fabella, and a 5mm elongated fragment is present at the medial aspect of the fabella.
No signs of soft tissue swelling present at the medial aspect of the fabella. The long bones, including the femur and tibia are normal; No signs of stifle effusion on CT. No signs of destructive lesion. The rest of the structures of the right hind limb are normal including the hip joint and tarsi and pes. There is a rounded 5mm diameter hypoattenuating focal area of bone rarefaction centred in the femoral neck of the left hindlimb.
Conclusions:
Lesion involving the lateral fabella of the right stifle. The lateral fabella is misshapen with multiple fragments – DDX : ·Lateral fabellar fracture (see article attached in VetCT platform: Houlton et al JSAP 1993)
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A rectangular fragment 2mm X 6mm is present caudal to the fabella.
A 5mm elongated fragment is present at the medial aspect of the fabella.
3D volume rendered image of the right stifle showing the fractured/multipartite lateral fabella.
 
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