Radiology Key

Knee TERMINOLOGY Abbreviations • Origin (O), insertion (I), function (F) GROSS ANATOMY Overview • Largest and most complex joint  Hinge joint throughout its main range of motion  Stability is maintained by ligaments,…

Calcified Soft Tissue Mass DIFFERENTIAL DIAGNOSIS Common • Granuloma • Venous Vascular Malformation • Gout or Pseudogout Less Common • Fat Necrosis • Panniculitis • Pilomatricoma • Sarcoma • Soft Tissue Metastases • Nerve Sheath Tumor • Fibroma • Soft Tissue…

Gluteal Muscles TERMINOLOGY Abbreviations • Anterior superior iliac spine (ASIS) IMAGING ANATOMY Gluteal Muscles • Components: Gluteus maximus, gluteus medius, gluteus minimus, tensor fascia lata, piriformis, superior and inferior gemellus, obturator internus…

Ankle TERMINOLOGY Abbreviations • Artery (a.) • Ligament (l.) • Muscle (m.) • Tendon (t.) • Vein (v.) GROSS ANATOMY Osseous Anatomy • Ankle (talocrural) joint  Tibia, fibula, and talus form synovial joint  Supported by lateral…

Cubital Tunnel Syndrome KEY FACTS Terminology • Cubital tunnel syndrome (CUTS)  Due to compression of ulnar nerve at cubital tunnel • Symptoms can also be due to ulnar nerve traction and friction…

Joint Effusion DIFFERENTIAL DIAGNOSIS Common • Osteoarthritis Less Common • Inflammatory Arthropathy • Crystal Arthropathy • Infective Arthritis • Hemarthrosis • Lipohemarthrosis • Pigmented Villonodular Synovitis • Synovial Osteochondromatosis ESSENTIAL INFORMATION Key Differential Diagnosis Issues • Characterization of underlying…

Elbow GROSS ANATOMY Joint Capsule Attachments • Posterior  Proximally attaches to humerus proximal to olecranon fossa and capitellum; distally attaches to proximal ulna • Anterior  Proximally attaches to humerus proximal to coronoid…

Musculoskeletal Ultrasound Artifacts Definition A US artifact is a feature seen on an image that is not representative of the tissue being scanned. These may be either technology or technique…

Wrist TERMINOLOGY Definitions • Articulation complex comprising distal radioulnar, radiocarpal, ulnocarpal, pisotriquetral, midcarpal, and carpometacarpal joints IMAGING ANATOMY Osseous Structures • Distal radius: Lister tubercle on dorsal surface acts as fulcrum for…

Dermatofibrosarcoma Protuberans KEY FACTS Terminology • Low-grade spindle cell mesenchymal sarcoma of dermis and subcutis Imaging • Nearly always arising from dermis, then infiltrates subcutaneous tissue  Most commonly arises in trunk (~…