Final answer:
The arching quadriceps stretch is controversial due to the excessive stress it places on the kneecap and surrounding tissues, risking abnormal patella tracking and potential damage. Balancing the muscles' pull and strengthening exercises can reduce these risks.
Step-by-step explanation:
The arching quadriceps stretch is considered a controversial lower-body stretch because it provides excessive stress on the kneecap and other tissues in the front knee. The potential problem arises when the pull produced by the medial and lateral sides of the quadriceps femoris muscle is not balanced, which can lead to abnormal tracking of the patella toward the lateral side. This imbalance and resulting lateral pull can be exacerbated in individuals with a larger Q-angle, which is more common in women due to their wider pelvis. Over time, if this lateral tracking continues, it can cause pain and potentially result in damage to the articulating surfaces of the patella and femur, eventually leading to arthritis. A more balanced approach to strengthening the quadriceps femoris muscle can help to prevent such imbalances and reduce the risk of knee pain and damage.
To ensure proper knee function and health, treatment includes ceasing activities that cause knee pain and slowly resuming them, as well as targeted exercises to strengthen the quadriceps and correct imbalances.