The purpose of this critical appraisal is to critique and analyze “Comparison of hamstring and patellar tendon grafts in anterior cruciate ligament reconstruction: A prospective randomized study,” a study about different ACL grafts and how rehabilitation effects the functional level of the patient. The introduction, methods, results, and discussion are critiqued by providing strengths and weaknesses of each section. Following the critique is a discussion about why this study was chosen for the critical appraisal and how it applies to the physical therapy practice. The intervention of the study is also analyzed to recognize if it would be reputable in a clinical setting, assessing the benefits and risks of the intervention. Critically analyzing a research study is important to establish the reliability, effectiveness, and clinical relevance for physical therapy practice.