Editorial Commentary: Pie-Crusting for Medial Meniscal Root Repair Shows Improved Outcomes Without Laxity

Arthroscopic access to the posterior root of the medial meniscus is often difficult in a tight medial compartment. To facilitate ease of access, partial lengthening of the medial collateral ligament (MCL) "pie-crusting" has been advocated to increase the working space of the medial compartment during arthroscopy. Purported benefits of MCL include increased visualization and decreased misdiagnosis during diagnostic arthroscopy, decreased iatrogenic chondral injuries with instrumentation, and postoperative medial compartment off-loading. Several techniques of MCL lengthening have been described including percutaneous lengthening, transportal lengthening, and mini-open lengthening. The safety of MCL lengthening has been demonstrated. Patients receiving MCL lengthening have no difference in postoperative laxity, postoperative pain, nor damage to surrounding structures. MCL lengthening also shows improved patient outcome scores and decreased rates of retear of medial meniscal root tear repair.