A ligament is a band of connective or fibrous tissue that connects two bones in a joint; the cranial cruciate ligament is the ligament that connects the thigh bone with the lower leg bone - it helps to stabilise the stifle joint. Cranial cruciate ligament disease, also referred to as the anterior cruciate ligament (ACL), is the sudden (acute) or progressive failure of the cranial cruciate ligament, which results in partial to complete instability of the stifle joint. Cranial cruciate rupture is the tearing of the cranial cruciate ligament, it is the most common cause of rear-leg lameness in dogs and a major cause of degenerative joint disease (progressive and permanent deterioration of joint cartilage) in the stifle joint; rupture may be partial or complete.
The MMP surgery involves making a cut down the bone (osteotomy) then gradually levering the bone forward which changes the angle of the patella ligament and re-adjusts the mechanics of the joint. The bone is fixed in its new position by inserting a titanium mesh wedge which has a pin drilled through it and finally a staple placed to add stability to the bone. The titanium wedge uses innovative technology which allows the implant to become part of the bone rather than attached to the bone.
Post-operative recovery involves strict lead exercise only for 4-6 weeks and possibly physiotherapy to aid a full return to fitness.