Does patellar luxation always require surgery?

Not necessarily. Mild cases that occur infrequently may be managed conservatively with rest, weight control, and pain relief. However, recurrent cases or those affecting quality of life are usually better treated surgically — ask your vet to evaluate the imaging before making a decision.

How long does recovery take after surgery?

Recovery time depends on the surgical technique and the individual patient. Bone healing typically takes 6–8 weeks, and full functional recovery may take 3–6 months. Activity must be restricted and rehabilitation arranged as directed by your vet during this period.

What can I observe at home to help the vet assess my pet?

You can record side-view and front-view walking videos, note the date and frequency of the first episode, weigh your pet, and track appetite and toilet habits. This information is very helpful for the vet — bring it all to the appointment.

Can patellar luxation affect my pet's lifespan or cause chronic pain?

Mild cases may only cause intermittent lameness long-term, but recurrent or severe luxation can lead to chronic pain and joint degeneration. A monitoring or treatment plan tailored to your pet's assessment is recommended.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Patellar Luxation in Dogs & Cats: Lameness, X-Rays & Care Guide [2025]

Kneecap dislocation managed with surgery or conservative care depending on severity

Take 1 minute to check the symptoms first

Last updated: 2026/01/06

Pethealthmap Editorial Team

Sources: WSAVA, AAHA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Sudden inability to stand or bear weight on hind limbs
•Continuous severe pain with non-stop crying out or struggling
•Obvious joint deformity or rapid swelling with marked tenderness

Schedule a Clinic Visit Soon (within 24–72 hours)

•Intermittent lameness but able to walk short distances
•Occasional skipping or kicking out of a hind leg while walking
•Reduced activity level but appetite and alertness largely normal

01What symptoms indicate a problem?

Patellar luxation commonly alters hind limb use, presenting as intermittent or persistent lameness and pain-avoidance behaviour; severity can range from mild to significant and symptoms may recur.

Intermittent or persistent lameness, often skipping steps or alternating weight-bearing legs
Reluctance to bear weight on the hind limb, lifting the leg or avoiding pressure while walking
Sudden pain when running, jumping, or turning, causing avoidance of certain movements
Reduced activity level, reluctance to jump or climb stairs
Symptoms may recur and worsen over time, especially with weight gain

Seek emergency care immediately if you notice the following symptoms:

⚠️ Sudden weakness in the hind limbs or inability to stand
⚠️ Persistent severe pain with continuous crying or struggling
⚠️ Visible joint deformity or rapid swelling with pain on touch

02How to assess at home? Key observation tips and when to seek emergency care

Recording observations at home helps the vet assess disease progression and severity more quickly — videos and timestamps are especially useful.

Record side-view and front-view walking videos (at least 30 seconds each) for your vet
Note the date of first onset, frequency of episodes, and any changes over time
Observe whether appetite, alertness, and activity level have decreased or changed
Weigh your pet and track any recent weight changes
Monitor toilet habits and whether daily routines have been affected
If symptoms worsen or your pet cannot stand, arrange a clinic visit or emergency assessment promptly

03How will the vet diagnose the condition? Common examination steps

The vet will begin with a physical examination and may order imaging and blood tests as needed to determine the best treatment approach.

Physical examination

palpating joint stability, identifying pain locations, and assessing range of motion

X-ray imaging

evaluating patella position, bone structure, and any concurrent abnormalities

Advanced imaging (CT or MRI)

used for complex skeletal abnormalities or pre-surgical planning

Blood and biochemistry tests

assessing overall health and anaesthetic/surgical risk

Referral to an orthopaedic specialist for further evaluation and surgical planning when needed

04What are the treatment and care options? Medication, diet, and home care guide

Treatment may be conservative or surgical; post-operative follow-up and rehabilitation are critical for long-term functional recovery.

Mild cases may be managed initially with rest, weight control, and pain medication
Moderate or recurrent luxation often warrants surgical correction to restore joint stability
Post-surgery activity restriction is essential; follow-up appointments and imaging should be arranged as directed
Long-term weight management and dietary adjustments are important to reduce joint stress
Rehabilitation or physiotherapy (e.g. hydrotherapy, passive range-of-motion exercises) may be recommended
Comprehensive evaluation and post-operative follow-up at an orthopaedic specialist centre is recommended

05What to prepare before the vet visit? Key information to help the vet assess your pet quickly

Bring walking videos (at least 30 seconds each from the front and side) for dynamic gait assessment

Note the date of first onset, episode frequency, and any progression of symptoms

List current medications, supplements, and any known allergies

Bring a recent weight record along with notes on diet and toilet habits for the vet's reference

Bring or upload any previous imaging or examination reports in advance

Call ahead to ask whether same-day X-rays are available or if an orthopaedic referral will be needed

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.

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