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The Trendelenburg position is also used when placing a central venous catheter in the internal jugular or subclavian vein. The Trendelenburg position uses gravity to assist in the filling and distension of the upper central veins, as well as the external jugular vein. It plays no role in the placement of a femoral central venous catheter. [7]
The other two borders of the femur are only slightly marked: the lateral border extends from the antero-inferior angle of the greater trochanter to the anterior extremity of the lateral condyle; the medial border from the intertrochanteric line, at a point opposite the lesser trochanter, to the anterior extremity of the medial condyle.
Additionally, a line drawn through the femoral neck superimposed on a line drawn through the femoral condyles forms an angle, the torsion angle, which makes it possible for flexion movements of the hip joint to be transposed into rotary movements of the femoral head. Abnormally increased torsion angles result in a limb turned inward and a ...
As the femur is the only bone in the thigh, it serves as an attachment point for all the muscles that exert their force over the hip and knee joints. Some biarticular muscles – which cross two joints, like the gastrocnemius and plantaris muscles – also originate from the femur.
Blumensaat's line is a line which corresponds to the roof of the intercondylar fossa of femur as seen on a lateral radiograph of the knee joint. [1] The angle at which this line appears on the radiograph can be used to determine the position of the patella or diagnose an ACL injury.
Borderline: 69° to 82° in men, 51° to 56° in women; Pathological: ≥83° in men and ≥57° in women; Femoral head-neck offset Measured in cross-lateral view. Offset of the femoral head with regard to most prominent aspect of the femora neck >10 mm Offset percentage Femoral head-neck offset related to femoral head diameter >0.18
In children over about 3 to 4 years of age, this line should be smooth and undisrupted, otherwise it may indicate a fracture or hip dysplasia. [6] However, in infants this line can be unreliable as it depends on the rotation of the hip when the image is taken. [7] (D) The acetabular index measures the acetabular roof slope. It is the most ...
It is coated with cartilage in the fresh state, except over an ovoid depression, the fovea capitis, which is situated a little below and behind the center of the femoral head, and gives attachment to the ligament of head of femur. The thickest region of the articular cartilage is at the centre of the femoral head, measuring up to 2.8 mm. [1]