Vet360 Vol 4 Issue 3 June 2017 Vet360 - Page 14

Article sponsored by Petcam ® SURGERY Surgical repair most often utilizes a combination of soft tissue and bone repair to reposition the patella in the trochlear groove. The trochlear groove can then be deepened using one of the many described techniques for a trochlearplasty. Only techniques that salvage the hyaline cartilage in the trochlear groove should be used. Newer methods of creating a deeper trochlear groove have been developed in recent times. These consist of RidgeStop™ developed by Orthomed UK (Fig 3). This uses a high-density polyurethane implant placed on the medial trochlear ridge to aid in the treatment of patella luxation. The current recommendation is that is should only be used alone in cases of mild patella lux- ations with no marked bone deformity of the leg. It can be used together with the bone corrective techniques to augment repair. The RidgeStop™ offers a less invasive method to deepen the patella groove to aid in movement of the patella in the normal alignment. It does not require the removal of a cartilage wedge to deepen the groove but does re- quire accurate placement of 3 bone screws in the medial condyle to secure the implant. Kyron have developed an entire groove replacement made from titanium that the patella slides in. The author has no experience with this technique. Figure3a: A jig is used to pre-place screws The disadvantage to both these techniques is the in- creas