This cluster of papers focuses on the biomechanical aspects of running-related injuries, particularly related to foot strike patterns, patellofemoral pain syndrome, hip strength, stress fractures, and gait analysis. It explores the influence of abnormal hip mechanics, altered lower-extremity kinematics, and intrinsic risk factors for the development of anterior knee pain in athletes. Additionally, it delves into the anatomy and biomechanics of the medial patellofemoral ligament and the role of impact forces and foot pronation in injury mechanisms.