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Canine Arthritis And Joint
  • Home
  • Complete Guide To Natural Health and Homemade Diet For Dogs
    • Testimonials for book
  • ONLINE COURSE for COMPLETE GUIDE TO NATURAL HEALTH AND HOMEMADE DIET FOR DOGS
    • Testimonial For Online Course
  • CUSTOM Supplemental Plan For Your Dog
  • Cyplexinol for Bone and Tissue Repair and Restore
  • ​The Assisi Loop
  • PROTOCOL For Canine Arthritis and Joint
  • Safe Recommended Joint Supplements >
    • Boswellia Improves Symptoms of Arthritis
    • Anti- inflammatory Herbs For Arthritis
    • Cats Claw For Arthritis
    • Devils Claw
    • Cetyl Myristoleate For Osteoarthritis In Dogs
    • Ester C For Your Dog
    • GLUCOSAMINE AND MSM
    • Hydrangea Root For Bone Spurs And Kidney Stones
    • Rosehips For Pets
    • Sea Cucumber: A Natural Arthritis Treatment
  • Recommended Daily Diet Supplements for the Arthritic Dog
  • Inactive Ingredients To Avoid
  • Ingredients In Supplements
  • Sign Up For Our Canine Arthritis Newsletter
  • ACL Injuries In Dogs >
    • Canine Cruciate Ligament (or ACL) Surgery Questions
    • How To Heal A Torn ACL Without Surgery
    • What You Need to Know After Your Dog has ACL Surgery
    • Understanding TPLO
    • Canine ACL Surgery
    • Prolotherapy In Animals
    • The Dog Meniscus
  • Acupressure For Pets
  • Acupuncture for Animals
    • Aging Gracefully
  • Adequan
  • Arthramid for Dogs
  • Arthritis in Dogs- Can Magnesium Help
  • Bone Disease In Growing Dogs
  • Canine Rehabilitation After Surgery
  • Carpal Hyperextension Injury
  • Cauda Equina Syndrome In Dogs
  • CBD Oil And Your Arthritic Dog
  • Chiropractic For Your Pet
  • Degenerative Myelopathy
  • Diskospondylitis (Spondylitis) in Dogs
  • Dont Forget Your Dogs Diet With Arthritis
  • Early Joint issues In Canines
  • Elbow Dysplasia
  • Fibrocartilaginous Embolism (FCE) in Dogs
  • Floating Kneecaps, or Luxating Patellas
  • Helping Your Dog Stay Healthy And Pain Free
  • Hip Dysplasia in Dogs >
    • Choices In Hip Dysplasia Treatments
    • Subluxation In Your Dogs Hips
    • What Is Femoral Head Osteotomy (FHO)
    • Prolotherapy In Animals
  • How Canine Arthritis And Diet Are Connected
  • How to Give Your Dog Glucosamine Injections
  • How To Fix Slick Flooring
  • How To Install A Doggie Door And Buying The Correct Size >
  • How to Massage Your Dog
  • Hydrotherapy For Dogs
  • Hyperbaric Oxygen Therapy For Pets
  • Hypertrophic Osteodystrophy
  • Immune-Mediated Polyarthritis (IMPA)
  • Intervertebral Disc Disease
  • Laser Therapy for Dogs
  • Learning How To Feel and Read Your Dogs Spine
  • Librela
  • LTCI & DOGS
  • Lumbosacral Spondylosis In Dogs
  • Magnetic Therapy
  • Muscle Sprains and Strains In Dogs
  • MYELOMALACIA IN DOGS
  • Moist Heat And Cold Therapy For Canines
  • NSAIDs-The Risks Involved
  • Osteoarthritis In Dogs
  • Panosteitis In Young Dogs
  • Palmitoylethanolamide (PEA)
  • Pet Arthritis
  • Platelet Rich Plasma Therapy For Pets
  • Prevention and Preservative Free
  • Prolotherapy In Animals
  • Pro-Stride for Dogs
  • Rheumatoid Arthritis in Dogs
  • Sacroiliac Luxation
  • Sciatica in Dogs
  • Semitendinosus and Gracilis Myopathy
  • Setting Up A Pool For Therapy For Your Dog
  • SPRYNG Injections for Arthritis and ACL/CCL Tears
  • Stem Cell Therapy In Pets
  • Steps To Take To Get Your Dog Moving
  • Tesla BioHealer™ for Pets 2.0
  • Transcutaneous Electrical Nerve Stimulation (TENS) For Canines
  • Transitioning To A Raw Diet >
  • Ultrasound Therapy
  • Vet Checks With Injuries And Arthritis
  • What Vets Dont Know Or Wont Tell You
  • Weather And Joint Issues
  • What To Do When Your Dog has Had Surgery Or Is Lame
  • Wobblers Syndrome
  • Testimonials
  • About Us
    • Privacy Policy
  • Contact Us
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Canine Arthritis And Joint
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Floating Kneecaps, or Luxating Patellas

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By Dr Karen Becker 

If Your Dog Gives This Quick Distress Signal - Do These 3 Things to Avoid Surgery

Dr. Karen Becker discusses the painful condition known as floating kneecaps, or luxating patellas. Learn what causes the condition and what you can do to prevent or treat the problem in your pet. 

Dr. Becker's Comments: 

Floating kneecaps are more typically a problem of small and tiny dogs. 

Often a dog with this problem appears fine. He has no history of a traumatic injury to the leg, and he's very active – running and playing normally.

Then out of the blue one day he comes up lame. He picks up a back leg. He might yelp or cry while holding the leg off the ground. You think to yourself, 'Oh my gosh! What just happened?' It seems like there's been some sort of trauma to your pup, yet you've been watching him run around and he seemed fine. Just as suddenly, your dog lowers his leg and starts walking or running around again as though nothing ever happened. What occurred, unbeknownst to you, was that his kneecap popped out of place, stopping him in his tracks and causing him to hold his leg up. Then the kneecap returned to its original position, he was able to put his foot back down, and off he went. I've had pet owners in my practice tell me, 'My dog went suddenly lame, holding up a back foot, and then just as suddenly he was not lame.' That's a pretty typical description of what happens with the condition known as luxating patella.
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​Description of a Luxating Patella or 'Floating Kneecap'

The kneecap sits in the same place in dogs and humans – at the distal end of the femur. It helps the quadriceps muscles flow across the joint between the thigh and lower leg so your dog has mobility and use of her shin. The kneecap moves up and down in a groove. Patella ridges hold the kneecap in place, and as long as the ridges are deep (picture a pea in a peapod), the kneecap can only move up and down as nature intended. Unfortunately, some dog breeds have a very flat patella ridge. This means the kneecap doesn't seat snugly in the groove and it can pop out either medially, to the inside, or laterally, to the outside. Typically in larger dogs, the kneecap pops laterally, while smaller dogs' kneecaps tend to pop to the inside.

Size and Breed Matters

A genetic predisposition to luxating patellas occurs in a variety of small and tiny dogs, including:

  • Miniature and Toy Poodles
  • Maltese
  • Jack Russell Terrier
  • Yorkie
  • Pomeranian
  • Pekingese
  • Chihuahua
  • Papillion
  • Boston Terriers

Short-legged dogs, for example Basset Hounds and Doxies, aren't genetically prone to the condition. However, because their femurs are so short, it can change the angle of the seating of the kneecap, and these dogs can end up with luxating patellas as well. Larger breeds have less genetic predisposition to problems with the kneecap. They typically have a nice, deep groove for the patella to seat in. However, larger dogs are prone to hip problems. If a joint above the kneecap like the hip joint, or one below the kneecap like the ankle develops a problem, it can change the ergonomics of the animal's body. If there's a problem with your dog's hip, it can cause a kind of ripple effect that forces the patella out of its groove.
Large and giant breed dogs with hip dysplasia often have a secondary condition of luxating patella which is caused by the malformation of the hip joint. Kitties can also develop floating kneecaps, however, the situation is usually much less clinically severe.
Cats are smaller and lighter in body weight than most dogs. They are also more flexible and their bodies move differently. A ten pound cat with a significant kneecap issue often won't show many or any clinical symptoms such as limping.
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Severity of the Condition

There are four levels of severity of a luxating patella. Grade 1 is the mildest; Grade 4 is the most severe.

A Grade 1 luxating patella describes a kneecap that pops out (or can be manually popped out of place), but pops right back in on its own. 

Grade 2 describes a kneecap that pops out of place and doesn't always pop back in automatically, sometimes requiring manual manipulation to re-seat it. 

A Grade 3 condition is when the kneecap sits outside its groove most of the time, but can be manually positioned back in the groove, where it stays temporarily. 

Grade 4 luxating patella describes the worst-case scenario, in which the kneecap sits outside the groove all the time, and won't stay seated in the groove when it is manually popped into place. 

You can see by these levels of severity why a displaced kneecap can cause intense pain for the animal.
Often in young dogs with strong, resilient joint cartilage, the patella can pop out and back in without obvious signs of pain. There may be an intense jolt of pain as the kneecap moves across the patella ridge, but it's gone in a flash and usually not obvious to an observer. The dog won't want to put weight on his leg until the kneecap has popped back in (which can cause another flash of pain), but otherwise he appears fine. Ultimately, however, as the cartilage wears down from the frequent travel of the kneecap in and out of its groove, there will be bone-to-bone contact and the condition can become acutely painful for your pup.
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Diagnosis and Treatment

If your veterinarian diagnoses even a mild Grade 1 luxating patella in your pet, I recommend you address it right away. Taking a proactive approach to treating the condition -- no matter how mild, and especially in a young dog -- can often prevent future surgery, joint degeneration, and diminished quality of life.

The first thing you should do for a dog diagnosed with a floating kneecap is help him achieve and maintain a healthy body weight. It's just common sense that the heavier the dog, the more burden there will be on his knees. Optimal body weight for your dog means lots of lean muscle and a reduced amount of fat. This condition will limit stress on the joints. Number two, it's very important to keep your pet moving. Maintaining excellent muscle tone will help your dog's body form a kind of cage around the knee which will keep the patella in place. 


Years ago, veterinarians advised owners of dogs with floating kneecaps to prevent their pets from moving around. We now know that's a really bad idea. The more toned the muscles of your dog's legs are, the more stable the kneecap will be. Building muscle is an extremely important part of reducing the clinical symptoms of a luxating patella.

The third action you should take is to provide your pet with oral joint support supplementation in the form of glycosaminoglycans, or GAGs. There are GAGs on the market specifically for veterinary use. However in my practice, we use several human oral joint support supplements to help maintain the integrity of knee cartilage while also improving joint fluid production. 

I recommend you discuss the subject with your integrative or holistic vet, who will be able to suggest or provide the right supplements to rebuild and maintain strong and resilient cartilage and joint fluid production in your dog.

I suggest you also discuss Adequan, an injectable joint support supplement with your vet. Adequan helps dogs that are developing premature arthritis. It slows down joint degeneration and improves joint fluid production. 

Chiropractic and acupuncture treatments are also great modalities for dogs with luxating patella. Especially if you have a puppy with the condition, there are some very effective chiropractic manipulations that can be performed to keep the hips and knees in good alignment. This will in turn help prevent progression of the condition. 

In addition to daily aerobic exercise to maintain your dog's physical conditioning, I recommend you feed a species-appropriate diet. All foods are categorized as either pro or anti-inflammatory. By feeding your dog an anti-inflammatory diet (one very low in carbohydrate content), you can help reduce or moderate the effects of inflammation in your pet's body, including the joints. Feeding a species-appropriate, carb-free diet can significantly reduce the inflammation associated with a luxating patella.
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When to Seek Surgery for Your Pet

Traditional veterinarians often recommend surgery upon diagnosis of a luxating patella, regardless of the severity of the condition.

I'm not a proponent of surgery for a floating kneecap unless the condition is destroying your dog's quality of life. If your pup can't walk or run without intense pain, you should consider surgical correction.

There are two main goals of corrective surgery for a Grade 3 or 4 luxating patella.

One method is to deepen the trochlear wedge. If the joints are flat, the veterinary orthopedic surgeon will cut a deeper V to help hold the kneecap in the groove. The other goal of surgery is to moderate the amount of tension in the patella capsule or ligament by tightening down the joint capsule. My recommendation is to explore all possible non-surgical options to help stabilize your dog's knee before you consider surgical correction. Surgery for this condition carries the usual risks associated with anesthesia and infection, plus a few more because the correction is to a moving part of your pet's body that is also weight bearing. 

These risks include:

Problems with a pin. If a pin is inserted to hold the joint in place it can migrate, requiring surgery to remove it.  Also an abscess, called a seroma, can form at the site of the pin and require either draining or surgical removal. 

Repair collapse. Post surgery, your dog should not run or jump for about two months to allow the repair to stabilize. This is a tough order for most healthy dogs, and it's not uncommon for the repair in an active dog to break down during this period. 

Failed surgery. Around 10 percent of dogs do not show significant improvement after surgery. They continue to experience pain. In addition, sometimes repair of the kneecap can cause problems to develop in other bones and joints. ​


A knee brace may be beneficial for luxating patellas.
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https://www.amazon.com/Kruuse-Rehab-Right-Protector-X-Large/dp/B00Z0U9W6S/?tag=petresults-20&th=1

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**Canine Arthritis And Joint is intended for informational, educational and entertainment purposes only and is not a substitute for medical advice, diagnosis or treatment. Do not attempt to self-diagnose or treat any health condition. You should always consult with a healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect your pet might have a health problem. The opinions expressed by Canine Arthritis And Joint are not to be replaced for medical care. This website and the information contained herein have not been evaluated by the Food and Drug Administration. The information and opinions on Canine Arthritis And Joint are not intended and cannot be used to diagnose, treat, cure, or prevent any disease. This applies to people and pets!
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