Background. Mixed Martial Arts (MMA) is a high-intensity combat sport that exposes athletes to substantial biomechanical stress, often leading to musculoskeletal injuries. Knee injuries, particularly those affecting the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL), are of significant concern due to their impact on an athlete`s performance and career longevity. Problem and Aim. This video case report presents a unique instance of ACL and PCL distension in an MMA fighter. The aim is to describe the injury mechanism and diagnostic findings. Material and Methods. Video footage from the match was utilized to analyze the recorded injury mechanism. Subsequently, the patient was examined using MRI, and a comprehensive case description was provided. Results. The injury occurred during a grappling sequence, where rotational and compressive forces on the knee joint led to ligamentous stress. MRI confirmed diffuse distension of the ACL and PCL without rupture or secondary joint damage, showing increased signal intensity on T2-weighted imaging. Conclusions. This case highlights an uncommon pattern of ACL and PCL distension in MMA, emphasizing the importance of early diagnosis and appropriate rehabilitation strategies. The findings contribute to the growing understanding of injury mechanisms and management in combat sports, supporting the role of conservative treatment in cases of ligamentous distension without rupture.
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