Complex body part and Rotator cuff

Complex body part noun - A particular complex anatomical part of a living thing.

Rotator cuff and complex body part are semantically related. In some cases you can replace phrase "Rotator cuff" with "Complex body part", this phrases are similar.

Rotator cuff noun - A supporting structure of the shoulder consisting of the muscles and tendons that attach the arm to the shoulder joint and enable the arm to move.

Complex body part and rotator cuff are semantically related. You can use "Complex body part" instead a noun phrase "Rotator cuff".