A patella strap, also known as a patellar tendon strap, is a small orthopedic support worn just below the kneecap. Its primary function is to provide targeted pressure to the patellar tendon, which connects the kneecap to the shinbone. This focused compression helps to shift the strain and redistribute the forces placed upon the tendon, a common site of pain in conditions like Patellar Tendinopathy (Jumper’s Knee). The strap lessens the amount of pressure on the tendon during movement, offering relief and improving function.
The Role of Patella Straps in Activity
Patella straps are designed specifically for load management during dynamic movements that place significant stress on the knee joint. When you run, jump, or squat, the strap works by changing the direction and magnitude of the force applied to the patellar tendon. This biomechanical shift helps to alleviate pain signals and stabilize the kneecap, allowing individuals to remain active with less discomfort.
The strap’s effectiveness is rooted in its ability to offload the irritated portion of the tendon, essentially giving it a break during high-impact activities. It acts as a temporary mechanical aid, not a definitive treatment, to manage symptoms while the underlying condition is addressed through rehabilitation.
Drawbacks of Continuous Patella Strap Use
Wearing a patella strap continuously, especially during periods of rest or all day, can lead to several unintended negative consequences. One major concern is the potential for muscle dependency, where the body begins to rely on the external support rather than engaging its own stabilizing muscles. This over-reliance may cause the quadriceps, which play a crucial role in knee stability, to become less active.
If muscles are consistently inhibited, there is a risk of muscle atrophy, or weakening and shrinking of the muscles, over time. While the strap’s primary purpose is to allow for pain-free activity, wearing it when not moving means the muscles are not challenged, potentially leading to a decline in strength.
Furthermore, continuous compression from any strap or brace can restrict circulation, especially if it is worn too tightly. Improperly fitted or constantly worn straps can also lead to dermatological issues. The constant friction and lack of air circulation can cause skin irritation, chafing, and hygiene concerns underneath the material. The strap should be viewed as a tool for managing symptoms during specific tasks, not as a permanent fixture for the knee.
Guidelines for Optimal Strap Usage
The patella strap is a tool for activity, and its use should be limited to the times when you are actively moving and experiencing pain. Experts generally recommend wearing the strap only during periods of physical activity that aggravate the patellar tendon, such as running, jumping, or prolonged stair climbing. The device should be removed immediately after the activity is complete.
For continuous wear during prolonged activity, such as a long-distance run, the strap is intended to be worn for the duration of the movement, but it should not be kept on for the entire day. To prevent muscle inhibition and circulatory issues, continuous use should generally be limited to a maximum of two to three hours at a time, removing it during sedentary periods. It should never be worn while sleeping, as the knee needs unrestricted blood flow and movement during rest.
The strap is palliative, meaning it addresses the pain but does not cure the underlying issue. If pain persists even with correct strap usage, or if you feel the need to wear the strap for the majority of the day, it indicates a need for professional evaluation. Consulting with a physical therapist or physician is the recommended next step to develop a comprehensive plan that includes strengthening exercises and addresses the root cause of the tendon strain.