Soft Tissue Infection KEY FACTS Terminology • Infection of soft tissue including cellulitis, infective fasciitis, necrotizing fasciitis, pyomyositis, phlegmon, and abscess Imaging • US excellent for localized soft tissue infection • Use US…
Ligament Injury KEY FACTS Terminology • Ligament tear: Tear or avulsion of ligament fibers Imaging • Ligament tears have similar appearances irrespective of ligament location • Acute stage Diffuse or localized ligament swelling…
Ankle Ultrasound KEY FACTS GENERAL CONSIDERATIONS • Common specific indications: Ligament tear, tendon disorders, and suspected joint infection and inflammation • Less common specific indications: Suspected tarsal tunnel syndrome, impingement, and ganglia…
Tenosynovitis KEY FACTS Imaging • Occurs only in tendons encased by synovium • Distension of tenosynovium (tendon sheath) due to fluid or synovitis with variable tendon swelling • Acute exudative tenosynovitis Usually due…
Fat Injury KEY FACTS Terminology • Focal inflammation ± necrosis ± atrophy of subcutaneous fat Imaging • Variable appearances depending on chronicity of lesion • Earlier stages Localized mild swelling and increased echogenicity…
Plantar Fasciitis and Fibromatosis KEY FACTS Terminology • Plantar fascia = multilayered fibrous aponeurosis, 1-2 mm thick, with medial, central, and lateral bands Imaging • Plantar fasciitis Thickened plantar fascial insertion, especially…
Joint Injection: Lower Limb KEY FACTS Procedure • Hip joint injection Usually anterior approach – Longitudinal method: Preferred Needle tip positioned on “bare area” at head-neck junction – Transverse approach Needle tip positioned…
Hand and Wrist Procedures KEY FACTS Preprocedure • Indication Aspiration of joint fluid Intraarticular injection of medication or contrast agent Percutaneous therapy of ganglion cyst, tendon disease, trigger finger, carpal tunnel…
Hip and Pelvis Procedures KEY FACTS Procedure • Hip or sacroiliac (SI) joint injection or aspiration US-guided joint injection more efficient than fluoroscopic-guided joint injection For hip, anterior longitudinal approach usually…
Foreign Body and Injection Granuloma KEY FACTS Terminology • Foreign body (FB): Retention of penetrating or iatrogenic object within tissues • Injection granuloma (IG): Localized tissue reaction to material injected into tissues…
