A. A dog weighing 100 lbs will need surgery to fix the ligament tear. If this is not fixed surgically then your dog will develop arthritis in his knee and, because the other knee is constantly taking more wight than originally "planned", the other knee will develop a ligament tear much sooner and more likely. Unfortunately the disposition for CCL and ACL tears is inherited and so the second knee will give out as well, sooner or later. There are several techniques to fix this, and orthopedic surgeons will usually do the technique they are most familiar with. The outcome is similar on all techniques. There will be some rehabilitation time afterwards, but your dog's knee should work almost like new afterwards. It is important to stick to the surgeon's instructions for the entire recuperation time or the outcome could be compromised.
A. In a dog this big, surgery will be the best option. There are several different methods for CCL repair however, if performed by a board certified veterinary surgeon with orthopedic experience, the results post op are very similar. Aftercare is critical and be prepared to have the other knee repaired as there is a high probability it will also require surgery eventually.
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