Symptoms of Dislocated Kneecap
The symptoms of dislocated kneecap are usually immediate and unmistakable. When the patella slips out of place, individuals often feel a sharp, sudden pain in the front of the knee, followed by swelling and visible deformity. A dislocated kneecap may cause the entire knee to look misshapen or as if the kneecap is sitting off to one side.
A common sign is the sensation of something “popping out” or shifting within the knee joint. Some people report hearing a snapping sound at the time of injury. The knee often gives way or buckles, making it nearly impossible to bear weight. In many cases, the kneecap remains dislocated until a healthcare professional manually puts it back into place—a process called reduction. In some cases, the patella may relocate spontaneously, but pain and swelling persist.
Other typical symptoms of dislocated kneecap include limited range of motion, tenderness around the kneecap, and bruising that may develop after a few hours. The joint may feel unstable or wobbly, particularly when attempting to stand or walk. Muscle spasms around the knee are also common, as the body tries to protect the injured area.
After the initial injury, the knee often becomes stiff and swollen. Pain tends to worsen with movement, and some individuals may develop a fear of bending or placing weight on the knee. If a piece of bone or cartilage breaks off during the dislocation—known as an osteochondral injury—locking or catching of the joint may occur.
In younger athletes, especially those involved in high-impact sports, these symptoms of dislocated kneecap may mimic other injuries such as ligament tears or meniscus damage. That’s why a proper medical assessment is essential. Imaging tests, such as X-rays or MRIs, help confirm the dislocation and identify any associated fractures or soft tissue damage.
Symptoms of Dislocated Kneecap
In South Africa, access to prompt diagnosis may vary depending on whether a person visits a private or public healthcare facility. In rural areas, delays in receiving imaging or orthopaedic assessment can lead to complications if the kneecap is not properly realigned.
Recognising the symptoms of dislocated kneecap quickly allows for timely treatment and reduces the risk of long-term joint instability. With appropriate care, most people make a full recovery, but ignoring symptoms can result in repeat dislocations or chronic knee problems.
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