Αποτελέσματα Αναζήτησης
18 Νοε 2022 · The DRUJ is a pivot joint between the distal radius and ulna that allows forearm rotation in conjunction with grasping function of the hand. Its osseous components are the radial sigmoid notch; the ulnar head, consisting of the hub and seat; the fovea; and the styloid (Fig 1) (1).
14 Απρ 2024 · articulation occurs between the ulnar head and sigmoid notch (a shallow concavity found along ulnar border of distal radius)
PMCID: PMC8440053 PMID: 34539128. Abstract. The distal radioulnar joint (DRUJ) allows supination and pronation of the distal forearm and wrist, an integral motion in everyday human activity. DRUJ injury and chronic instability can be a significant source of morbidity in patients’ lives.
The distal radioulnar joint (DRUJ) is the distal articulation between the radius and ulna, acting as a major weight-bearing joint at the wrist and distributing forces across the forearm bones. The articulating surfaces are the radial sigmoid notch and ulnar head, while the ulnar fovea serves as a cr …
Anatomy. To properly treat chronic instability of the DRUJ, several important anatomical features must be well understood. The sigmoid notch radius of curvature is much bigger than the ulnar head, resulting in inherent laxity and little bony constraint (4, 5).
The “scallop sign” in the sigmoid notch of the radius may be seen on X-ray in advanced OA of the DRUJ. In one study, 59% were prepared to sacrifice joint mobility to achieve pain relief; after surgery, persistent pain was the main source of dissatisfaction.
20 Ιουν 2014 · Premature physeal fusion or surgical excision of the distal ulna can lead to abnormal contact with the radius proximal to the sigmoid notch. Early changes of ulnar impingement syndrome include bone marrow edema, cortical thinning, and remodeling of the radial cortex on MRI.
