Final answer:
Pain following the angle from the lateral hip to the midline of the groin can be the result of damage to the tibial collateral ligament and the medial meniscus, which can occur with a hit to the lateral side of the extended knee. A powerful blow to the lateral knee can also cause a "terrible triad" injury involving the anterior cruciate ligament.
Step-by-step explanation:
Pain following the angle from the lateral hip to the midline of the groin can be the result of damage to the tibial collateral ligament and the medial meniscus. These injuries can occur with a hit to the lateral side of the extended knee, causing the joint to open and stretch the ligament and meniscus. A powerful blow to the lateral knee can also result in damage to the anterior cruciate ligament, leading to a "terrible triad" injury.