| Typical Reason for Surgery |
Cranial Cruciate Ligament Injury Partial or complete rupture of the cranial cruciate ligament, the structure that helps stabilize the knee. |
TPLO is designed to stabilize the knee by changing the angle of the tibial plateau rather than relying on the damaged ligament. A veterinary orthopedic examination is needed to confirm that the knee is the primary source of pain and instability. |
| Common Clinical Signs |
Sudden or gradual hind-leg lameness, difficulty rising, reluctance to climb stairs or jump, reduced activity, a swollen knee, or a “sitting” posture with one hind leg extended. |
These signs can also occur with meniscal injury, patellar problems, hip disease, or fractures. Persistent lameness should be evaluated instead of being attributed to a cruciate injury without testing. |
| Physical Examination |
Joint swelling, reduced range of motion, pain, muscle loss, and instability detected by tests such as the cranial drawer or tibial thrust. |
Some dogs tense their muscles and may require sedation for a reliable examination. Findings from the physical examination help determine whether surgical stabilization is appropriate. |
| Diagnostic Imaging |
Knee radiographs are commonly used to identify joint swelling, arthritis, bone changes, and the shape of the tibia. Advanced imaging may be recommended in selected cases. |
Radiographs help the surgeon plan the procedure, evaluate bone quality, identify concurrent joint disease, and measure the anatomy needed for the planned bone cut. |
| Dog Size and Activity |
TPLO is frequently considered for medium-to-large dogs, athletic dogs, and dogs with substantial knee instability. Smaller or less active dogs may also be candidates. |
Size and activity influence forces placed on the knee, but they do not decide the procedure alone. Age, body condition, bone anatomy, medical status, and the surgeon’s assessment are also important. |
| Degree of Ligament Damage |
Complete rupture or a partial tear that causes persistent pain and instability. |
A partial tear may progress, particularly when instability remains. Surgery is more likely to be recommended when conservative care does not control pain or when examination shows meaningful instability. |
| Meniscal Assessment |
The menisci are cartilage structures inside the knee that can be damaged when the joint is unstable. Possible signs include clicking, persistent pain, or limited improvement. |
The surgeon may inspect and treat a damaged meniscus during the operation. Addressing concurrent meniscal injury can be important for reducing ongoing pain. |
| When Conservative Care May Be Tried |
Strict activity restriction, veterinarian-prescribed pain management, weight reduction when needed, rehabilitation, and controlled leash walking. |
Non-surgical care may be considered for selected dogs with mild or partial injury, lower activity demands, or substantial surgical risk. It requires close monitoring because instability can contribute to arthritis and muscle loss. |
| Health and Surgical Risk |
Overall fitness, heart and kidney health, infection risk, blood-test results, current medications, and ability to tolerate anesthesia. |
TPLO requires anesthesia and bone surgery. A preoperative assessment helps identify conditions that may require treatment, additional testing, postponement, or a different management plan. |
| Weight and Body Condition |
Excess body weight increases the mechanical load on the knee. A body-condition assessment should be part of treatment planning. |
Weight management supports recovery, reduces stress on both knees, and may lower the risk of complications. It is useful whether treatment is surgical or conservative. |
| Recovery Commitment |
Strict confinement and controlled activity are generally required initially, followed by a gradual rehabilitation program over several weeks. |
Running, jumping, and off-leash activity too early can increase the risk of complications. The household must be able to follow medication, wound-care, exercise, and follow-up instructions. |
| Possible Complications |
Infection, implant or bone-healing problems, persistent lameness, meniscal injury, fracture, delayed recovery, or complications related to anesthesia. |
Complication risk varies with the dog’s health, anatomy, surgical technique, aftercare, and activity restriction. Contact the veterinary team promptly for worsening swelling, discharge, fever, severe pain, or sudden loss of limb use. |
| Expected Long-Term Consideration |
Many dogs regain useful function after appropriate stabilization and rehabilitation, but arthritis may still develop or progress after cruciate disease. |
TPLO improves mechanical stability and comfort for many suitable candidates; it does not restore a normal, disease-free knee. Maintaining a healthy weight and following a conditioning plan can support long-term mobility. |
| Questions to Ask the Surgeon |
What confirms the diagnosis? Is the meniscus affected? Why is TPLO preferred for this dog? What are the alternatives, risks, costs, and rehabilitation requirements? |
A clear discussion helps compare TPLO with other stabilization procedures or conservative care and ensures that the recommendation fits the dog’s anatomy, lifestyle, health, and the owner’s ability to manage recovery. |