Patellar Subluxation

12 min read

Patellar subluxation is a condition in which the kneecap (patella) slips out of its normal position. It is a common knee injury, especially in athletes who participate in sports that involve jumping, running, and sudden changes in direction. It can cause pain, swelling, and instability in the knee joint.

Causes of Patellar Subluxation

Patellar subluxation is usually caused by a sudden force or trauma to the knee, such as a direct blow or a sudden twist. It can also be caused by a muscle imbalance, weak thigh muscles, or tight ligaments. People with flat feet or high arches are more likely to experience patellar subluxation.

Diagnosis of Patellar Subluxation

Patellar subluxation is usually diagnosed through a physical examination and imaging tests such as X-rays or MRI scans. During the physical examination, the doctor will check for tenderness, swelling, and instability in the knee joint. Imaging tests can help to confirm the diagnosis and rule out other conditions.

Complications of Patellar Subluxation

If left untreated, patellar subluxation can lead to chronic knee pain and instability. It can also cause damage to the cartilage and ligaments in the knee, leading to further complications. In some cases, surgery may be necessary to repair the damage.

Prevention of Patellar Subluxation

The best way to prevent patellar subluxation is to strengthen the muscles around the knee and maintain good flexibility. Wearing proper footwear and using proper technique when participating in sports can also help to reduce the risk of injury. If you have flat feet or high arches, orthotics may be recommended to help support the knee.

Take the Patellar Subluxation Assessment

Symptoms

Common Symptoms of Patellar Subluxation

  • Pain in the knee joint
  • Swelling in the knee joint
  • Instability in the knee joint
  • Clicking or popping sound when the knee is moved
  • Difficulty straightening the knee
  • Difficulty bending the knee
  • Weakness in the knee

When to See a Doctor

If you experience any of the above symptoms, it is important to see a doctor as soon as possible. A doctor can diagnose patellar subluxation and recommend the best treatment plan for you. Treatment may include physical therapy, bracing, or surgery.

Causes

Genetics

Genetics can play a role in the development of patellar subluxation. People with certain genetic conditions, such as Ehlers-Danlos syndrome, are more likely to experience this condition. Additionally, people with a family history of patellar subluxation may be more likely to develop it.

Muscle Imbalance

Muscle imbalances can also increase the risk of patellar subluxation. If the muscles around the knee are not balanced, it can cause the kneecap to move out of its normal position. This can be caused by weak or tight muscles, or a combination of both.

Structural Abnormalities

Structural abnormalities of the knee can also increase the risk of patellar subluxation. This includes abnormalities of the bones, ligaments, and tendons. For example, people with a shallow groove in the femur (thigh bone) may be more likely to experience patellar subluxation.

Trauma

Trauma to the knee can also cause patellar subluxation. This can include direct trauma, such as a fall or a blow to the knee, or indirect trauma, such as a sudden twist or turn of the knee. This type of trauma can cause the kneecap to move out of its normal position.

Overuse

Overuse of the knee can also increase the risk of patellar subluxation. This is especially true for athletes who participate in activities that involve repetitive knee movements, such as running or jumping. Overuse can cause the muscles and ligaments around the knee to become weak or tight, which can lead to patellar subluxation.

Getting a Diagnosis

Physical Examination

The first step in diagnosing patellar subluxation is a physical examination. The doctor will check for swelling, tenderness, and instability in the knee joint. They may also ask the patient to perform certain movements to assess the range of motion and stability of the knee. X-rays may also be taken to check for any fractures or other damage to the knee.

MRI Scan

An MRI scan is often used to diagnose patellar subluxation. This scan can provide detailed images of the knee joint and surrounding structures. It can help to identify any damage to the ligaments, tendons, or cartilage that may be causing the subluxation. It can also help to rule out other conditions that may be causing similar symptoms.

Treatment

Once the diagnosis of patellar subluxation has been made, treatment can begin. Treatment may include rest, ice, compression, and elevation. Physical therapy may also be recommended to help strengthen the muscles around the knee and improve range of motion. In some cases, surgery may be necessary to repair any damage to the ligaments or tendons.

Conclusion

Diagnosing patellar subluxation can be difficult, as the symptoms can be similar to other knee injuries. A physical examination and MRI scan can help to accurately diagnose the condition. Treatment may include rest, ice, compression, and elevation, as well as physical therapy and, in some cases, surgery. It is important to get an accurate diagnosis so that the correct treatment can be prescribed.

Questions for Your Doctor

Diagnosis

Your doctor will need to diagnose your condition in order to determine the best course of treatment. They may use imaging tests such as X-rays or MRI scans to get a better look at the knee joint. They may also perform a physical examination to assess the range of motion and stability of the knee.

Treatment Options

Once your doctor has diagnosed your condition, they will discuss treatment options with you. These may include physical therapy, bracing, or surgery. Your doctor will explain the risks and benefits of each option and help you decide which one is best for you.

Rehabilitation

If you choose physical therapy or surgery as your treatment option, your doctor will discuss a rehabilitation plan with you. This plan will include exercises and activities to help you regain strength and stability in your knee. Your doctor will also provide advice on how to prevent further injury.

Follow-up Care

Your doctor will also discuss follow-up care with you. This may include regular check-ups to monitor your progress and make sure that your treatment is working. Your doctor may also recommend lifestyle changes such as weight loss or avoiding certain activities to help reduce the risk of further injury.

Questions to Ask Your Doctor

When discussing patellar subluxation with your doctor, it is important to ask questions. Here are some questions to consider asking:

  • What is the best treatment option for me?
  • What can I do to prevent further injury?
  • What activities should I avoid?
  • What is the expected recovery time?
  • Are there any long-term effects of this condition?

By discussing these topics with your doctor, you can ensure that you receive the best care for your condition. It is important to be an active participant in your own healthcare and to ask questions if you are unsure about anything.

Treatment

Non-Surgical Treatments

Non-surgical treatments are the first line of defense for patellar subluxation. These treatments can include:

  • Rest: Resting the knee can help reduce pain and swelling.
  • Ice: Applying ice to the affected area can help reduce inflammation.
  • Compression: Wearing a compression bandage can help reduce swelling.
  • Elevation: Elevating the knee can help reduce swelling.
  • Physical Therapy: Physical therapy can help strengthen the muscles around the knee and improve range of motion.
  • Bracing: Wearing a brace can help stabilize the knee and reduce pain.
  • Medication: Non-steroidal anti-inflammatory drugs (NSAIDs) can help reduce pain and inflammation.

Surgical Treatments

If non-surgical treatments are not effective, surgery may be recommended. Surgery can help realign the kneecap and reduce pain and instability. Common surgical procedures include:

  • Arthroscopy: During this procedure, a small camera is inserted into the knee joint to view the area and make repairs.
  • Lateral Release: During this procedure, the tight ligaments on the outside of the knee are released to allow the kneecap to move more freely.
  • Tibial Tubercle Osteotomy: During this procedure, the tibial tubercle (the bony bump at the top of the shinbone) is moved to a new position to help realign the kneecap.

Conclusion

Patellar subluxation can cause pain, swelling, and instability in the knee joint. Fortunately, there are several treatments available to help manage the condition. Non-surgical treatments such as rest, ice, compression, elevation, physical therapy, bracing, and medication can help reduce symptoms. If these treatments are not effective, surgery may be recommended to realign the kneecap and reduce pain and instability.

Drugs & Medications

Nonsteroidal Anti-Inflammatory Drugs (NSAIDs)

Nonsteroidal anti-inflammatory drugs (NSAIDs) are a type of medication used to reduce inflammation and pain. Commonly used NSAIDs for patellar subluxation include ibuprofen (Advil, Motrin), naproxen (Aleve), and celecoxib (Celebrex). These medications can help reduce pain and swelling in the knee joint.

Corticosteroids

Corticosteroids are a type of medication used to reduce inflammation. They are typically used in more severe cases of patellar subluxation, when NSAIDs are not effective. Corticosteroids can be taken orally or injected directly into the knee joint. Commonly used corticosteroids for patellar subluxation include prednisone and methylprednisolone.

Muscle Relaxants

Muscle relaxants are a type of medication used to reduce muscle spasms and pain. They can help reduce pain and improve range of motion in the knee joint. Commonly used muscle relaxants for patellar subluxation include cyclobenzaprine (Flexeril) and carisoprodol (Soma).

Conclusion

Patellar subluxation is a condition in which the kneecap slips out of its normal position. Treatment typically involves physical therapy, bracing, and medications. Commonly used medications for patellar subluxation include nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroids, and muscle relaxants. These medications can help reduce pain and improve range of motion in the knee joint.

Diet

Nutrition for Knee Health

Eating a balanced diet that is rich in vitamins, minerals, and antioxidants can help support healthy joint function. Foods that are high in omega-3 fatty acids, such as salmon, walnuts, and flaxseed, can help reduce inflammation in the knee joint. Vitamin C, found in citrus fruits, bell peppers, and broccoli, can help strengthen the connective tissues in the knee. Vitamin D, found in fortified milk, eggs, and fatty fish, can help improve bone health. Eating foods that are high in calcium, such as dairy products, can also help strengthen the bones and reduce the risk of osteoporosis.

Weight Management

Maintaining a healthy weight is important for knee health. Excess weight can put extra strain on the knee joint, leading to pain and instability. Eating a balanced diet and exercising regularly can help you maintain a healthy weight and reduce the symptoms of patellar subluxation. Eating smaller, more frequent meals throughout the day can also help you manage your weight and keep your energy levels up.

Conclusion

While there is no specific diet that can treat patellar subluxation, eating a balanced diet that is rich in vitamins, minerals, and antioxidants can help reduce the symptoms and improve overall knee health. Maintaining a healthy weight is also important for knee health, as excess weight can put extra strain on the joint. Eating smaller, more frequent meals throughout the day can help you manage your weight and keep your energy levels up.

Lifestyle

Exercise

Exercise is one of the best ways to reduce the symptoms of patellar subluxation. Strengthening the muscles around the knee can help stabilize the joint and reduce the risk of further subluxation. Low-impact exercises such as swimming, cycling, and yoga are particularly beneficial. It is important to avoid high-impact activities such as running and jumping, as these can put additional strain on the knee.

Weight Management

Maintaining a healthy weight is important for reducing the symptoms of patellar subluxation. Excess weight can put additional strain on the knee joint, leading to increased pain and instability. Eating a balanced diet and exercising regularly can help you maintain a healthy weight and reduce the symptoms of patellar subluxation.

Proper Footwear

Wearing the right shoes can help reduce the symptoms of patellar subluxation. Shoes with good arch support and cushioning can help reduce the strain on the knee joint. It is also important to avoid wearing high heels, as these can put additional strain on the knee.

Ice and Heat Therapy

Ice and heat therapy can help reduce the pain and swelling associated with patellar subluxation. Applying ice to the knee for 15-20 minutes several times a day can help reduce inflammation and pain. Heat therapy can also be beneficial, as it can help relax the muscles around the knee and reduce stiffness.

Rest

Rest is an important part of managing patellar subluxation. Taking regular breaks from activities that put strain on the knee can help reduce pain and swelling. It is also important to avoid activities that cause pain or discomfort.

Conclusion

Patellar subluxation can cause pain, swelling, and instability in the knee joint. Fortunately, there are several lifestyle tips that can help reduce the symptoms of patellar subluxation and improve overall knee health. These include exercising, maintaining a healthy weight, wearing the right shoes, using ice and heat therapy, and taking regular breaks from activities that put strain on the knee.