Luxating Patella Surgery in Dogs: When Is It Necessary?

If your small dog occasionally skips a step while walking or briefly holds up a back leg before returning to normal, a luxating patella may be the cause.

A luxating patella occurs when the kneecap slips out of its normal groove. In mild cases, it may cause intermittent lameness. In more advanced cases, it can lead to persistent discomfort, cartilage damage, and arthritis.

For families in Akron seeking answers about recurring back leg limping, the team at Copley Fairlawn Veterinary Clinic evaluates patellar luxation regularly and helps determine when surgery is appropriate.

Understanding when surgical correction is necessary allows earlier intervention and improved long-term comfort.

What Is a Luxating Patella? 

The patella, or kneecap, normally sits within a groove at the lower end of the femur. When a luxation occurs, the kneecap moves out of that groove.

In small breed dogs, medial patellar luxation, or MPL, is most common. This means the kneecap slips toward the inside of the leg.

Repeated slipping disrupts normal joint mechanics. Over time, this can irritate cartilage and place abnormal stress on the knee joint.



While some dogs experience only mild intermittent signs, others develop persistent lameness.

Dog Kneecap Slipping: Common Symptoms 

Symptoms vary depending on severity.

Many owners first notice a brief skipping gait. The dog may lift a hind leg for a few steps and then resume walking normally.

Other signs may include:

• Intermittent back leg limping
• Sudden hind limb lameness
• Difficulty rising from rest
• Reduced willingness to jump
• Gradual stiffness

In more advanced cases, the kneecap may remain displaced, leading to consistent limping and discomfort.

How Luxating Patella Is Graded 

Patellar luxation is classified into four grades.

Grade I involves occasional luxation with spontaneous return to position.

Grade II includes more frequent slipping, sometimes requiring manual repositioning.

Grade III involves persistent luxation with intermittent repositioning.

Grade IV indicates permanent displacement that cannot be manually corrected.



Grading helps guide treatment recommendations.

When Is Luxating Patella Surgery Needed? 

Not every dog with patellar luxation requires surgery.

Mild Grade I cases without persistent lameness may be managed conservatively with weight management and monitoring.

Surgery is typically recommended when lameness becomes frequent, when the kneecap does not remain stable, when pain develops, or when joint degeneration progresses.

Higher grade luxations are more likely to require surgical correction.

Early surgical stabilization can reduce ongoing cartilage wear and delay arthritis progression.

If your dog has been diagnosed with patellar luxation, you can learn more about surgical correction on our MPL Surgery page.

MPL Surgery Recovery 

Recovery requires structured activity restriction and gradual reintroduction of movement.

The first two weeks focus on incision healing and strict rest.

Leash walks are introduced gradually. Running and jumping are restricted during early recovery.

Most dogs require approximately eight weeks of controlled activity before returning to normal play.

Full recovery and muscle rebuilding may take several months.



Following postoperative instructions carefully supports optimal surgical outcome.

What Happens If Surgery Is Delayed? 

Persistent luxation places abnormal stress on cartilage and joint surfaces.

Over time, this may result in progressive arthritis, increased lameness, and reduced mobility.

Delaying correction in higher grade cases can make future surgery more complex due to joint changes.



Early evaluation allows appropriate timing decisions.

Long-Term Outlook After MPL Surgery 

Many small dogs regain normal or near-normal function following surgical stabilization.

While mild arthritis may develop over time, stabilizing the kneecap significantly improves comfort and joint mechanics.



Maintaining a healthy body weight and controlled exercise supports long-term joint health.

What Pet Owners Share About Their Experience 

Orthopedic surgery for a small dog can feel overwhelming. Many families across Akron, Fairlawn, and Copley have trusted Copley Fairlawn Veterinary Clinic for MPL correction and recovery guidance.

You can review verified client experiences directly through our Google Reviews page to learn more about their recovery journeys.

Frequently Asked Questions