Medial-to-lateral drilling for transcondylar screw placement carries a higher risk of inadvertently penetrating the joint compared with lateral-to-medial drilling.

Objective: To determine the accuracy of transcondylar screws placed from medial-to-lateral using preoperative planning on computed tomography (CT) and an aiming device in elbows with humeral intracondylar fissures (HIFs). Study Design: Retrospective case series.Animals: Twenty-five client-owned dogs with HIF. Methods: A 4.5-mm transcondylar screw was placed in 34 elbows with HIF. humeral condylar diameter (HCD) was measured at the humeral condylar isthmus on CT. Entry and exit points were planned at 0.3 Â HCD cranial and 0.2 Â HCD distal to the medial epicondyle and 0.3 Â HCD cranial and 0.3 Â HCD distal to the lateral epicondyle. An aiming device was used to guide drilling from the medial entry point to the lateral exit point. The difference between planned and actual screw entry and exit points, and the angular deviation of the actual screw axis from the planned screw axis, was assessed on the postoperative CT scans. Results: Thirty-three out of 34 screws were completely within the humeral condyle. Thirteen out of 34 screws were placed less than 2 mm from planned entry and exit points in both the transverse and the frontal plane. The axis of the screw deviated by a mean of 3.2 (transverse plane) and 3.5 (frontal plane) from the planned axis. Conclusion: Humeral transcondylar screws placed with the technique tested here were entirely within the humeral condyle in 33 out of 34 elbows.

BSAVA CONGRESS 2019 PROCEEDINGS group and week 4 in the FCX+PCSO group compared with pre-treatment values. No differences were seen between the groups. Pearson Correlation Coefficients demonstratednegative correlation between PVF and CBPI (R =-0.335, p = 0.001).

A 2-year-old cat was presented with the complaint of acute-onset non–weight-bearing lameness of the right forelimb. When examined, the cat was of short stature and had multiple joint and cartilaginous abnormalities suggestive of chondrodysplasia. The cause of the acute lameness was radiographically identified as a displaced osseous fragment from the medial portion of the right humeral condyle. The features of the osseous fragment were consistent with an ununited medial condylar ossification centre of the distal humerus. Furthermore, a nondisplaced ununited ossified fragment of similar appearance and size was present in the contralateral elbow. Surgical treatment by excision of the displaced fragment resulted in a preinjury level of limb function in the long-term outcome evaluation.

This article describes the clinical presentation, diagnosis and management of osteochondrosis dissecans (OCD) of the caudal aspect of the humeral head in an eight‐month‐old Border Collie. OCD of the canine shoulder is a frequent cause of forelimb lameness in the dog. A typical presentation of lameness and pain on shoulder extension or flexion is seen in young medium‐ to giant‐breed dogs, but it should be considered in almost all forelimb lameness work‐ups. For most cases, management consists of excision of the cartilage flap and careful curettage or forage of the underlying subchondral bone to promote fibrocartilage. For all cases, a mild degenerative joint disease will ensue; however, with appropriate management, a good long‐term prognosis can be expected in the majority of cases.