What is Patellar Luxation?
Patellar luxation is a common cause of lameness in both dogs and cats, especially in small breeds. It occurs when the kneecap (patella) moves out of its normal position, leading to discomfort and mobility issues.
Commonly Affected Breeds:
Breeds most affected include Poodles, Pomeranians, Yorkshire Terriers, Chihuahuas, French Bulldogs, Cavalier King Charles Spaniels, and Shih-Tzus, among others.
Does My Pet Need RidgeStop Surgery?
If your pet experiences limping or intermittent skipping on one or both rear limbs, RidgeStop surgery may be beneficial. This procedure stabilizes the kneecap by implanting a prosthetic ridge to prevent it from slipping out of place, restoring normal joint function.
Patellar Luxation Severity Grading
- Grade 1: Kneecap can be manually moved but returns to position on its own.
- Grade 2: Kneecap dislocates with movement but can be manually repositioned.
- Grade 3: Kneecap remains dislocated but can be manually replaced.
- Grade 4: Kneecap is permanently dislocated and cannot be manually repositioned.
The RidgeStop Procedure
- Performed under general anesthesia.
- A surgical implant is placed to prevent the kneecap from dislocating.
- Designed to be minimally invasive with a shorter recovery time compared to traditional methods.
Recovery Timeline
- 3-4 Days: Initial weight-bearing begins, with at-home physical therapy.
- 2 Weeks: Increased confidence in using the operated limb.
- 4-10 Weeks: Strong walking ability with some occasional lameness.
- 10+ Weeks: Full activity, including unrestricted off-leash exercise.
Post-Operative Care
- Exercise Restriction: Pets should have controlled leash walks and avoid running, jumping, or climbing.
- Pain Management: A non-steroidal anti-inflammatory painkiller is recommended for 4-6 weeks.
- Wound Care: Monitor for swelling, bruising, or signs of infection. Use an Elizabethan collar to prevent licking.
- No Bathing or Swimming: Until the surgical wound heals (typically 10-14 days).
- X-Ray Monitoring: If bone realignment was required, controlled exercise is necessary for 2-3 months until healing is confirmed.
Physical Therapy
Physical therapy is recommended to help restore strength, range of motion, and function to the affected limb. Soundwave therapy at 2 weeks post-operatively to help reduce swelling and promote healing. Underwater treadmill and laser therapy may be introduced 4-8 weeks post-operatively to aid in low-impact strengthening and pain management.