TTA is a complex orthopaedic procedure requiring general anaesthesia and exposure of the knee joint and bone. Wound bleeding, swelling and infection may occur as with any orthopaedic procedure but are uncommon and temporary. Movement or loosening of the bone or metal implants is uncommon but may result from excessive early post-operative activity. This complication may require re-operation by a specialist and incur further costs. We believe home care is just as important as the surgery in ensuring your dog has no complications. Complications such as infection, suture reaction or reaction to the artificial ligament, tearing of the artificial ligament, or future meniscal tearing are possible. Major complications, those requiring additional surgery, are rare. As long as the activity restrictions are adhered to, the chance that additional surgery will be needed is low.