The semimembranosus tendon (SMT) has a complex insertion and forms an integral part of the posteromedial corner:
- direct: common SMT to posterior aspect MTP 1 cm below joint
- anterior: common SMT posteromedial to MTP, inserts deep to MCL
- oblique popliteal ligament: blends with the OPL
- posterior oblique ligament: blends with sheath of SMT
- meniscal: SMT to coronary ligament of medial meniscus posterior horn
- distal expansion: over popliteus muscle (also called popliteal aponeurosis)