In a client experiencing patellar tendinopathy, which muscle dysfunction is likely present?

The most likely muscle dysfunction present in a client experiencing patellar tendinopathy is overactivity of the vastus lateralis. This is because, in cases of patellar tendinopathy, the alignment and function of the patella can be adversely impacted by muscle imbalances around the knee joint. The vastus lateralis, which is part of the quadriceps group, tends to become overactive due to compensatory mechanisms, particularly when there is weakness or underactivity in other muscles that are responsible for stabilizing the patella.

When the vastus lateralis is overactive, it can pull the patella laterally, which may increase stress on the patellar tendon. This condition often arises from improper movement patterns, insufficient strength in the medial quadriceps (like the vastus medialis oblique), and issues in the kinetic chain, leading to further potential for injury and exacerbation of symptoms.

Understanding this dysfunction is crucial in the context of a corrective exercise program, which aims to restore balance, strength, and proper movement patterns to alleviate symptoms and promote recovery from the tendinopathy. In addressing this condition, it would be essential to focus on strengthening the underactive muscles around the knee, particularly the vastus medialis, while also managing the