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Musculoskeletal system
Published in A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha, Clark’s Procedures in Diagnostic Imaging: A System-Based Approach, 2020
A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha
The joint capsule completely encloses the joint and is continuous laterally with the collateral ligaments. It sometimes forms three compartments: the anterior, posterior and annular recesses. It is attached inferiorly below the head of the radius, enclosing the annular ligament. Projecting into the joint cavity between the radius and ulna from behind is a triangular fold of synovial membrane. Intrinsic features of the joint include three fat pads situated between the joint capsule and the synovial membrane. They are closely related to the three fossae on the lower end of the humerus, being situated over the olecranon, coronoid and radial fossae. Extrinsic features include medial and lateral collateral ligaments and a bursa situated between the radius and ulna.
The Articulations of the Upper Member
Published in Gene L. Colborn, David B. Lause, Musculoskeletal Anatomy, 2009
Gene L. Colborn, David B. Lause
Palpate the head of the radius and the coronoid process of the ulna and then incise the articular capsule just proximal to those processes. Enlarge the capsular incision sufficiently to inspect the internal bony features, identifying the radial head, radial fossa of the humerus, coronoid process of the ulna and the coronoid fossa of the humerus. The close adaptation of the semilunar notch of the ulna with the humeral trochlea restricts lateral movment of the elbow joint.
Arthritis
Published in Harry Griffiths, Musculoskeletal Radiology, 2008
The diagnosis of CPPD depends on its involving unusual joints such as the patellofemoral joint in the knee and the radiocarpal joint in the wrist; there is also an absence of hypertrophic spur formation and an absence of juxta-articular osteoporosis. In the initial phases of the disease, there is also no joint-space narrowing. In the knee, chondrocalcinosis is obvious in the medial and lateral compartments, but the patellofemoral joint becomes markedly narrowed and painful (Fig. 109) in the wrist. Chondrocalcinosis can be seen in the triangular fibrocartilage, and there is narrowing of the radioscaphoid joint, which progresses to involve other carpal joints. Brower has pointed out that CPPD in the wrist progresses in a “stepladder”-type way involving first, the radioscaphoid joint, next the lunatecapitate joint, next the triscaphe joint, and finally the first carpometacarpal joint. With the joint space narrowing occurring, the lunate slides in an ulnar direction off its radial fossa, producing a radio-graphical subluxation (Fig. 110).
Feasibility of distal transradial access for coronary angiography and percutaneous coronary intervention: an observational and prospective study in a Latin-American Centre
Published in Acta Cardiologica, 2023
Héctor Hugo Escutia-Cuevas, Marco Alcantara Melendez, Arnoldo Santos Jiménez-Valverde, Gregorio Zaragoza-Rodriguez, Antonio Vargas-Cruz, Juan Francisco Garcia-Garcia, Bayardo Antonio Ordonez-Salazar, Antonio Flores-Morgado, Guillermo Orozco Guerra, Diego Alvaro Renteria-Valencia
The distal radial technique, which consists of canalising the radial artery through the anatomical structure called snuffbox (anatomical snuffbox, radial fossa, fovea radialis), has recently emerged as an alternative arterial intervention for diagnostic and therapeutic coronary catheterisation, allowing the conservation of the radial artery for classical transradial intervention [5,6]. The radial fossa is a hollow space on the radial side of the wrist that becomes evident when the thumb is extended; it is limited by the extensor pollicis longus tendon of the thumb, the extensor pollicis brevis and the abductor pollicis longus tendons of the thumb. The radial artery crosses the surface formed by the scaphoid and trapezium (Figure 1). Distal artery access from the radial fossa was first described in 2011 with the aim of permeabilize the ipsilateral radial arteries with retrograde occlusion [7]. If the artery is well developed it can be used as the entry site for 4, 5, 6, 7 or even 8 Fr catheters and sheaths [8].