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Accessory bones of the ankle. [13]Accessory bones at the ankle mainly include: Os subtibiale, with a prevalence of approximately 1%. [14] It is a secondary ossification center of the distal tibia that appears during the first year of life, and which in most people fuses with the shaft at approximately 15 years in females and approximately 17 years in males.
ASV at sapheno-femoral junction, the "Mickey Mouse sign" The accessory saphenous vein (ASV), either anterior or posterior, is an important GSV collateral frequently responsible for varicose veins located on the anterior and lateral aspect of the thigh. [27] The anterior ASV is more anterior than the ASV and is outside the femoral vessels plan.
Measurements of impingement on X-ray. [notes 1] [20] Measurement Image Target Normal value Center-edge angle of Wiberg The superior-lateral coverage of the femoral head. >20° (<55 years old) [notes 2] <24° (>55 years old) [notes 2] >40° indicates overcoverage; Crossing ratio Percentage of acetabular walls crossing.
A joint space of between 1.5 and 4 mm is regarded as normal. [15] Ankle osteoarthritis. For the ankle, the Kellgren–Lawrence scale, as described for the hip, has been recommended. [16] The distances between the bones in the ankle are normally as follows: [17] Talus - medial malleolus: 1.70 ± 0.13 mm; Talus - tibial plafond: 2.04 ± 0.29 mm
Evidence supports the rules as an accurate instrument for excluding fractures of the ankle and mid-foot, reducing the number of unnecessary investigations and length of stay in emergency departments. [3] The original study reported that the test was 100% sensitive and reduced the number of ankle X-rays by 36%. [4]
In radiology, an X-ray image may be said to be "anteroposterior", indicating that the beam of X-rays, known as its projection, passes from their source to patient's anterior body wall first, then through the body to exit through posterior body wall and into the detector/film to produce a radiograph. The opposite is true for the term ...
The glenoid fossa of the scapula or the glenoid cavity is a bone part of the shoulder.The word glenoid is pronounced / ˈ ɡ l iː n ɔɪ d / or / ˈ ɡ l ɛ n ɔɪ d / (both are common) and is from Greek: gléne, "socket", reflecting the shoulder joint's ball-and-socket form. [1]
On X-rays, there is generally measurement of both the femur and the tibia, as well as both combined. [4] Various measuring points for these have been suggested, but a functional method is to measure the distances between joint surfaces: [4] Femur length: The superior aspect of the femoral head and the distal portion of the medial femoral condyle.