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PCL Injury
Following an initial assessment of the skier’s leg and foot, he has suffered an injury to his posterior cruciate ligament. As one of the four major knee ligaments, posterior cruciate ligament is structured in a manner that enables it to resist forces that push the tibia posteriorly with respect to the femur. The structure that is most likely injured with the direct blow to the tibial tuberosity resulting in the displaced tibia is posterior cruciate ligament, which is one of the most commonly injured knee joint ligament structures (Peterson et al., 2017). The direct hit on the tibial tuberosity has caused a direct blow to the outer aspect of the upper leg or lower thigh and resulted in the injury to posterior cruciate ligament (PCL). The overall function of all ligaments in the knee joint is to provide the stability around a joint (Williams, 2013). In this case, all ligaments of the knee joint add to the proprioceptive role of the joint and provide feedback regarding the position of the joint when stretched.
The skier’s leg and foot are turning slightly blue relative to his other leg, which is an indication of cyanosis, a bluish...…of the tibia relative to the posterolateral condyle of the femur (Lee & Nam, 2011). During this process, the examiner should press the ligament area lightly to check for the extent of swelling, warmth, or tenderness while ensuring that the knee is not flexed beyond 90.
Given the situation and results of initial assessment, the patient should not ride in a friend’s car because the condition requires further assessment to determine the extent of the posterior cruciate ligament injury. Therefore, contacting emergency personnel is highly recommended to help in urgent examination of the injury.
References
Lee, B.K. & Nam, S.W. (2011, September). Rupture of Posterior Cruciate Ligament: Diagnosis and Treatment Principles. Knee Surgery and Related Research, 23(3), 135-141.
Peterson et al. (2017, March 20). Posterior Cruciate Ligament Injury. Retrieved November 4, 2017, from https://emedicine.medscape.com/article/90514-overview
Stevens et al. (2015). Anatomy and Biomechanics of the Posterior Cruciate Ligament and their Surgical Implications. Posterior Cruciate Ligament Injuries, 19-28. Retrieved from https://www.springer.com/cda/content/document/cda_downloaddocument/9783319120713-c1.pdf?SGWID=0-0-45-1494340-p177017047 Williams, C. (2013, September 9). Anatomy of the Knee: The Role of the Knee Ligaments. Retrieved November 4, 2017, from http://www.apostherapy.co.uk/en/blog/the-role-of-knee-ligaments
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