Pomeranian Patellar Luxation: High Incidence — Step-by-Step Management and Brace Guide

JointBreed HealthMeongsiljang Veterinary Advisory Board

Pomeranians are the small breed with the highest incidence of patellar luxation relative to their body size. We’ve put together a comprehensive guide covering step-by-step diagnosis, when to use braces or consider surgery, and key tips for home care.

Pomeranian Patellar Luxation: Why Does It Occur So Frequently?

A Pomeranian walking with its hind legs slightly raised.

Patellar luxation, or kneecap dislocation, is relatively common in small and toy breeds, including Pomeranians. Early detection is key. In the early stages, pain may not be obvious and symptoms can be intermittent, with the kneecap slipping out of place and back again during movement. If your dog frequently lifts one leg, hops, or briefly shakes a hind leg before resuming normal walking, it may already be a sign of patellar luxation. Therefore, we recommend closely monitoring your dog’s gait and scheduling regular orthopedic check-ups to catch any progression, even at stage 1.

Reasons for the High Incidence of Patellar Luxation in Pomeranians

According to veterinary internal medicine textbooks, patellar luxation arises from a combination of several developmental abnormalities. Pomeranians often exhibit the following factors concurrently: - Shallow trochlear groove: The groove where the kneecap should sit is congenitally shallow. - Femoral varus: The thigh bone is angled inward. - Medial displacement of the tibial tuberosity: The bony prominence on the shinbone where the kneecap attaches is shifted inward. - Soft tissue imbalance: The ligaments and muscles around the knee are pulled to one side. Even the presence of just one of these factors can lead to progressive luxation over time.

Patellar Luxation Symptom Checklist

These are the signs pet owners typically notice first. If any of these behaviors recur, we recommend an orthopedic examination. - Skipping gait: The pet lifts one hind leg and hops for a few steps before putting it back down. - Briefly lifting a leg without apparent pain: Patellar luxation often causes no obvious pain, so the pet may suddenly lift a leg, bend and straighten the knee a few times, and then resume walking normally. - Abnormal sitting posture: The pet sits with one leg stretched out to the side. - Avoiding stairs: The pet suddenly refuses to use stairs it previously climbed with ease. - Excessive attention to the hind legs: The pet repeatedly licks or focuses on the same knee.

A veterinarian examining the hind knee of a Pomeranian.

Stage-Specific Characteristics of Patellar Luxation and Recommended Responses

Item	Grade 1	Grade 2	Grade 3	Grade 4
Luxation pattern	Luxates only when pushed by hand, reduces spontaneously	Luxates and reduces on its own	Usually luxated, can be reduced manually	Always luxated, cannot be reduced
Owner-observed signs	Almost no symptoms	Intermittent skipping gait	Persistent limping	Crouched posture, muscle atrophy
Recommended response	Weight management, regular checkups	Braces, rehabilitation, weight management	Actively consider surgery	Early surgery essential
Prognosis	Good	Good with management	Good after surgery	Some residual effects even after surgery

Grading must be determined by a veterinarian through palpation and radiographs.

Go to the Vet Within 24 Hours for These Signs

If you notice any of the following signs, it may not be a simple luxation but could involve a cruciate ligament tear or fracture. Immediate orthopedic evaluation is necessary. - Inability to bear weight on the leg for more than 12 hours - Noticeable swelling around the knee joint - Severe pain and vocalization when touched - A knee that previously dislocated easily suddenly fails to reduce

How to Manage Stages 1–2 with Braces and Rehabilitation

In stages 1 to 2, knee braces and rehabilitation can help slow disease progression. The key is to stabilize the knee to prevent lateral instability and to strengthen the thigh muscles to support proper knee alignment. - Knee braces: Rather than wearing them all day, it’s best to use them only during high-stress activities like jumping or using stairs, allowing the muscles to work naturally during everyday movement. - Hydrotherapy and rehabilitation: These help build the muscles around the knee while reducing weight-bearing stress. - Walking on gentle inclines: This exercise gently stimulates the hindlimb muscles. - Weight management: Maintaining an ideal body weight reduces the load placed on the knees. Atrophy of the thigh muscles (quadriceps) is one of the factors that can worsen patellar luxation, so it’s important to maintain muscle strength consistently without overexertion.

A Pomeranian wearing a patellar brace on its hind legs, walking on a mat

When Surgery Is Necessary and Types of Surgical Procedures

Starting from stage 3, it becomes difficult to halt disease progression with conservative management alone. Veterinary surgery textbooks recommend performing the following three procedures, either individually or in combination: - Trochleoplasty: Deepening a shallow patellar groove by reshaping it into a V-shape or block form. - Tibial tuberosity transposition: Relocating the tibial tuberosity (where the patellar ligament attaches) laterally to correct patellar alignment. - Soft tissue realignment: Releasing the medial ligaments that pull the patella inward and tightening the lateral ligaments. To minimize the risk of recurrence, jumping and stair climbing must be strictly restricted for 6 to 8 weeks post-surgery.

Lifelong Care Essentials for Pomeranian Owners

These are lifelong management principles that apply regardless of whether surgery is performed. - Always place carpets or mats on slippery floors. - Prohibit jumping on sofas and beds—install a dog ramp or stairs instead. - Maintain body weight within 5% of the ideal weight. - Schedule an annual orthopedic radiographic examination. - When picking up your dog, support the hind legs to prevent them from dangling.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Is surgery always necessary for a Pomeranian with a Grade 1 patellar luxation?

Stage 1 is rarely treated with surgery. With proper weight management, non-slip flooring, and regular muscle-strengthening exercises, many dogs can remain in Stage 1 for life. However, it is important to have regular check-ups to monitor for any progression.

Wouldn’t it be better to keep the protective collar on all day?

Braces are a supportive tool that helps stabilize the knee during risky moments. Rather than wearing them all day, it's best to use them only during times when the knee is under significant stress, such as when jumping, using stairs, or going for walks, and allow the muscles to work on their own during regular activities. Since braces alone are not a cure, it's important to combine their use with rehabilitation exercises and weight management.

How much does the surgery cost?

Costs can vary significantly depending on the hospital, location, and specific procedure, so it’s difficult to provide an exact figure. We recommend getting quotes from two or three orthopedic specialty clinics at the time of diagnosis before making a decision.

If both knees are dislocated, can they be operated on at the same time?

Pomeranians, being small in stature, may experience strain on both legs during recovery, so surgeries are often scheduled with a time gap between each leg. The specific surgery schedule and interval should be determined in consultation with your attending veterinarian.

Can the condition recur even after surgery?

Recurrence (re-dislocation) is a possible complication even after surgery. However, strictly limiting jumping and stair use during the 6- to 8-week recovery period, along with regular X-ray check-ups to monitor alignment and correction, can help manage the outcome.

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References

[1] Textbook of Veterinary Orthopaedic Surgery, Chapter 11 — Patellar Luxation

[2] Clinical Medicine of the Dog and Cat, 4th Ed — Pathophysiology of Patellar Luxation

[3] 100 Top Consultations in Small Animal General Practice, Ch.45

[4] The Dog Care Handbook — Knee and Stifle Conditions