Soft tissue pathology: regional pain syndromes, nerves and ligaments.

Musculoskeletal ultrasonography (MSUS) is a useful imaging technique in the diagnosis of various soft tissue pathologies. High-frequency linear array transducers provide excellent resolution of soft tissue pathology. Pathological changes in subcutaneous tissue, including soft tissue tumours, abscesses, tenosynovitis, ligamentous and tendinous abnormalities, and peripheral nerve lesions, including carpal tunnel syndrome, can be identified. This review addresses the role of US in diagnosing regional pain syndrome, ligament lesions and nerve lesions.