Cruciate Ligament Injuries in Bernese Mountain Dogs

Watch your dog sit down from standing. A dog with a comfortable knee folds both hind legs neatly underneath, tucked symmetrically. A dog with cruciate disease often cannot flex that knee fully and slides the affected leg out to one side, sitting lopsided with one hock angled away. This sloppy sit frequently appears weeks before any limp does, and it is the earliest sign an owner can spot without equipment. Watch for it at every meal.

The reason it is worth catching early is the other side. Because the process is degenerative rather than traumatic, both knees are usually ageing along similar lines, and a substantial proportion of large dogs that rupture one cruciate rupture the second within a year or two. Every extra week the dog spends taking all its weight on the sound leg accelerates that. This is why post-operative rehabilitation is not optional physiotherapy but active protection of the second knee.

A Bernese carries 70 to 115 pounds through those two joints. Surgical options for a dog this size generally involve changing the mechanics of the joint rather than replacing the ligament, because a synthetic replacement is asked to do more than it can sustain at this weight. Your surgeon will explain the specific technique they recommend and why it suits your dog.

What follows any technique is the same: strict restriction, then controlled loading, then gradual return, across roughly three months. Arthritis in that knee is a near-certainty afterwards regardless, which links this injury to the arthritis already on the breed's documented health list.

If you think your Bernese has cruciate ligament injuries, the plan is three steps: write down what you have seen and when it started, book a veterinary appointment rather than waiting for the next flare, and take video of the behaviour or symptom before you go — the thing you are worried about rarely happens in the consulting room. Screening in the parents covers hip dysplasia, elbow dysplasia, bloat (gdv).

What the vet visit should produce is a diagnosis and a written plan, not just reassurance: what is being ruled out, what the monitoring interval is, and which signs mean you come back sooner. Ask what the treatment costs across a year rather than per visit, because that is the number that decides whether you are managing this condition or reacting to it.

Between appointments, keep a short log — dates, what you saw, what changed. It is the single most useful thing an owner brings to a follow-up, and for cruciate ligament injuries it is often what separates a clear pattern from a guess.