Techniques of arthroscopically assisted anterior cruciate ligament (ACL) reconstruction have been used successfully to treat all types of ACL injury. In the event of partial ACL rupture, surgical management may include standard ACL reconstruction techniques typically used in complete rupture, or a more selective approach may be employed. Surgical repair of the disrupted ligament, or selective reconstruction of the injured ACL bundle, may be considered in the case of partial ACL rupture. Advances in the understanding of cellular repair mechanisms and the availability of various biologics may factor prominently in future treatment algorithms for certain types of ACL injury. ACL repair with bone marrow stimulation and growth factor application has the potential to restore ligamentous integrity and function, without altering the anatomic footprint of the ACL while partially maintaining proprioceptive function. Following a strict treatment protocol in our most recent cohort of patients suffering from acute partial ACL injury, high rates of functional recovery and return to sport were achieved after surgical repair of the ACL, with concurrent bone marrow stimulation and the application of growth factors.