My kneecap sometimes feels like it is trying to pop out toward the outside of my leg. It seems to do it more when it is bent with my weight on it. Feels like I would fall if it came out and stayed out. What are your thoughts?
– Thanks, Mike

Kevin Pyles, PT
Ask The Expert
Hi Mike,
As a physical therapist, I often encounter patients who experience various knee-related issues. One common concern that individuals bring to my attention is the sensation of their kneecap popping out to the outside. This condition, known as patellar dislocation or subluxation, can be quite distressing and may significantly impact one’s daily activities. Based on what you are describing it would be helpful to have some more history before providing advice. Feel free to contact me directly for further guidance.
In this article, I will shed light on the causes, symptoms, and potential treatment options for this condition. Patellar dislocation occurs when the kneecap, or patella, slips out of its normal position within the groove at the end of the thigh bone. This displacement can happen due to several reasons, including a direct blow to the knee, sudden twisting or pivoting movements, or underlying structural abnormalities in the knee joint. Additionally, certain factors such as weak thigh muscles, ligament looseness/laxity, or imbalances in muscle strength can increase the risk of experiencing patellar dislocation.

One of the most common symptoms of patellar dislocation is a popping or shifting sensation in the knee. Patients often describe feeling as if their kneecap is sliding out of place, followed by pain and swelling. The affected knee may also appear visibly deformed or misaligned. In some cases, individuals may have trouble straightening or bending the knee, as well as instability or a feeling of the knee giving way. If you suspect that your kneecap is popping out to the outside, it is crucial to seek medical attention promptly.
A physical therapist, along with other healthcare professionals, can conduct a thorough evaluation to determine the underlying cause of your condition. This assessment may involve analyzing your medical history, performing a physical examination, and ordering imaging tests such as X-rays or an MRI. Once a diagnosis of patellar dislocation is confirmed, the primary goal of treatment is to reduce pain, restore knee function, and prevent future dislocations.
Physical therapy plays a vital role in achieving these objectives. Your physical therapist will design a personalized treatment plan tailored to your specific needs and goals. Initially, the focus of physical therapy will be on reducing pain and inflammation. This may involve the use of modalities such as ice or heat therapy, electrical stimulation, or ultrasound.
Your therapist may also recommend specific exercises to improve knee range of motion and strengthen the surrounding muscles. Strengthening exercises will primarily target the weakened muscles, as they play a crucial role in stabilizing the knee joint. As your symptoms improve, your physical therapist will gradually progress your treatment plan to include more challenging exercises aimed at improving balance, coordination, and proprioception. These exercises will help enhance joint stability and reduce the risk of future dislocations.
Additionally, your therapist may provide guidance on proper body mechanics and techniques to protect your knee during daily activities or sports participation.
In some cases, if conservative measures fail to alleviate symptoms or if there are underlying structural abnormalities, surgical intervention may be necessary. Your physical therapist will collaborate closely with your orthopedic surgeon to ensure a smooth transition from pre-operative to post-operative rehabilitation.
In conclusion, if you are experiencing the unsettling sensation of your kneecap popping out to the outside, it is essential to consult with a physical therapist or healthcare professional. Early intervention and appropriate treatment can help alleviate pain, restore knee function, and prevent future dislocations. Remember, everyone’s condition is unique, and a comprehensive evaluation by a qualified professional is crucial in determining the most effective treatment plan for you.



