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A subtle radial head fracture with associated positive sail sign. Specific fracture types of the radius include: Proximal radius fracture. A fracture within the capsule of the elbow joint results in the fat pad sign or "sail sign" which is a displacement of the fat pad at the elbow. Illustration showing radius shaft fracture
The head of the radius has a cylindrical form, and on its upper surface is a shallow cup or fovea for articulation with the capitulum of the humerus. The circumference of the head is smooth; it is broad medially where it articulates with the radial notch of the ulna , narrow in the rest of its extent, which is embraced by the annular ligament .
This is located posteroinferior to the deltoid tuberosity. The inferior boundary of the spiral groove is continuous distally with the lateral border of the shaft. Radial groove continuing as the lateral border of shaft of the humerus. The nutrient foramen of the humerus is located in the anteromedial surface of the humerus.
The ulna fractures in the proximal one-third of the shaft due to extreme dislocation. Depending on the impact and forces applied in each direction, degree of energy absorption determines pattern, involvement of the radial head and whether or not open soft tissue occurs. Direct blow on back of upper forearm would be a very uncommon cause.
comminuted radial head fracture with interosseous membrane disruption and distal radioulnar joint subluxation: fall from height: Essex Lopresti fracture at Wheeless' Textbook of Orthopaedics online Galeazzi fracture: Ricardo Galeazzi: radius shaft fracture with dislocation of distal radioulnar joint: blow to forearm: Galeazzi fracture at ...
Bones are commonly described with the terms head, neck, shaft, body and base. The head of a bone usually refers to the distal end of the bone. The shaft refers to the elongated sections of long bone, and the neck the segment between the head and shaft (or body).
The radial nerve divides into deep and sensory superficial branches just proximal to the supinator muscle—an arrangement that can lead to entrapment and compression of the deep part, potentially resulting in selective paralysis of the muscles served by this nerve (the extensor muscles and the abductor pollicis longus.) [4] Many possible ...
The surgical neck of the humerus is a bony constriction at the proximal end of shaft of humerus. It is situated distal to the greater tubercle and lesser tubercle , and proximal to the deltoid tuberosity .