Teres minor is a small but important muscle located on the posterior aspect of the shoulder. It is part of the rotator cuff – a group of muscles that stabilize the shoulder joint and enable precise movements. The muscle runs from the scapula and inserts onto the humerus.

The piriformis is a small but important muscle located deep in the gluteal region, where it contributes to hip movement and stability. In this article, you will get a thorough explanation of its anatomy, function, symptoms, common conditions, and how piriformis-related pain can be assessed and treated.