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Ultrasound-guided percutaneous procedures have several advantages, including real-time assessment and guidance, in which continuous visualization of a needle is possible throughout the procedure. With ultrasound guidance, a needle can be precisely placed in a target while avoiding important structures, such…
Ankle and Foot Anatomy Osseous Anatomy The ankle joint is a hinged synovial articulation between the talus and the distal tibia and fibula ( Fig. 8.1 ). Inferiorly, the talus articulates with the calcaneus through three facets, joined by the…
Knee Anatomy The knee is a synovial joint that consists of hyaline cartilage articulations between the femur, the tibia, and the patella ( Fig. 7.1 ). The menisci are C-shaped fibrocartilage structures between the femur and the tibia ( Fig.…
Hip and Thigh Anatomy The hip joint is a synovial articulation between the acetabulum of the pelvis and the proximal femur. The joint recess extends from the acetabulum over the femur to the level of the intertrochanteric line, just beyond…
Wrist and Hand Anatomy The wrist consists of several synovial articulations among the distal radius, the distal ulna, the proximal carpal row (scaphoid, lunate, triquetrum, pisiform), and the distal carpal row (trapezium, trapezoid, capitate, and hamate). The radiocarpal joint between…
Elbow Anatomy The elbow is a synovial joint composed of three elbow joint articulations: the trochlea and ulna, the capitellum and the radial head, and the proximal ulna and radius ( Fig. 4.1 ). The elbow joint has prominent joint…
The rotator cuff is composed of four tendons ( Fig. 3.1 ). Anteriorly, the subscapularis with its tendons converges onto the lesser tuberosity. Superiorly, the supraspinatus inserts on the superior aspect of the greater tuberosity; its footprint or attachment averages…
Muscle and Tendon Injury Muscle and tendon injuries may be categorized as acute and chronic. Acute injuries tend to take the form of direct impact injury, stretch injury during contraction (strain), or penetrating injury. Acute muscle injury can be clinically…
Equipment Considerations and Image Formation One of the primary physical components of an ultrasound machine is the transducer, which is connected by a cable to the other components, including the image screen or monitor and the computer processing unit. The…