Evaluation of elbow incongruency using reconstructed CT in dogs suffering fragmented coronoid process

Objective

A retrospective study was undertaken to evaluate elbow joint congruency in dogs suffering fragmented coronoid process (FCP).

Methods

Based on clinical, radiographic and computed tomographic (CT) examinations, elbows were divided into control and FCP groups. Standardised CT reconstructions were formatted in the frontal and sagittal planes. Humeroradial and humeroulnar joint space measurements were obtained from the images and incongruencies were calculated by comparing the two measurements.

Results

Forty-two FCP and 29 control elbows were identified. No incongruencies were noted at the coronoid base. At the level of the coronoid apex, FCP elbows exhibited a significant radioulnar incongruency compared with controls (P

Clinical relevance

This study supports the hypothesis that joint incongruency is associated with FCP in dogs, though is not present in every case at the time of diagnosis. The precise mechanism of development of this incongruency cannot be determined from these data.

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