Patients undergoing MFx or first/third-generation ACI for articular cartilage lesions in the knee can be expected to experience improvement in clinical outcomes at midterm to long-term follow-up without any significant difference between the groups.

The Achilles tendon (AT) is the strongest tendon in the human body, capable of heavy loading. 5 Despite its strength, 17 it is also one of the most commonly injured tendons. 25 The incidence of AT ruptures is between 7 and 37 per 100 000 person-years, 4 with most of these injuries occurring during athletics in men ages 30 to 40 years. 19 The AT reaches maximum tension during the eccentric phase of muscle/tendon action, 26 a mechanism that is associated with basketball, tennis, and football, all of which are sports commonly associated with AT ruptures. 35

Patients undergoing primary PCLR with either autograft or allograft can be expected to experience improvement in clinical outcomes. Autograft patients experienced less AP knee laxity postoperatively, although the clinical significance of this is unclear and subjective outcomes improved substantially and to a similar degree in both groups.