Beyond Nerve Entrapment: A Narrative Review of Muscle–Tendon Pathologies in Deep Gluteal Syndrome

Yong Hyun Yoon, Ji Hyo Hwang, Ho won Lee, MinJae Lee, Chanwool Park, Jonghyeok Lee, Seungbeom Kim, JaeYoung Lee, Jeimylo C. de Castro, King Hei Stanley Lam, Teinny Suryadi and Kwan Hyun Youn

Diagnostics 2025, 15(19), 2531

Abstract

Deep Gluteal Syndrome (DGS) has traditionally been defined as a clinical entity caused by sciatic nerve (SN) entrapment. However, recent anatomical and imaging studies suggest that muscle- and tendon-origin pathologies—including enthesopathy—may also serve as primary pain generators. This narrative review aims to broaden the current understanding of DGS by integrating muscle and tendon pathologies into its diagnostic and therapeutic framework. The literature was selectively reviewed from PubMed, Cochrane Library, Google Scholar, PEDro, and Web of Science to identify clinically relevant studies illustrating evolving concepts in DGS pathophysiology, diagnosis, and management. We review clinical features and diagnostic tools including physical examination, MRI, and dynamic ultrasonography, with special attention to deep external rotator enthesopathy. Treatment strategies are summarized, including conservative therapy, ultrasound-guided injections, hydrodissection, and prolotherapy. This narrative synthesis underscores the importance of recognizing muscle-origin enthesopathy and soft-tissue pathologies as significant contributors to DGS. A pathophysiology-based, multimodal approach is essential for accurate diagnosis and effective treatment.

Keywords: deep gluteal syndrome; sciatic nerve entrapment; enthesopathy; piriformis syndrome; ultrasonography; hydrodissection; prolotherapy; diagnostic algorithm

Download PDF

Full text on journal site