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The neck is flattened from before backward, contracted in the middle, and broader laterally than medially. The vertical diameter of the lateral half is increased by the obliquity of the lower edge, which slopes downward to join the body at the level of the lesser trochanter , so that it measures one-third more than the antero-posterior diameter.
The zona orbicularis and proximal hip joint capsule are poorly understood. Recent studies seem to confirm that the proximal to middle part of the articular capsule, including the zona orbicularis, acts biomechanically as a locking ring wrapped around the femoral neck and thus is a key structure for hip stability in distraction.
The head of the femur is connected to the shaft through the neck or collum. The neck is 4–5 cm. long and the diameter is smallest front to back and compressed at its middle. The collum forms an angle with the shaft in about 130 degrees. This angle is highly variant. In the infant it is about 150 degrees and in old age reduced to 120 degrees ...
Pauwel's angle is the angle between the line of a fracture of the neck of the femur and the horizontal as seen on an anterio-posterior radiograph. [1] Pauwel's angle is named after the German orthopedist Friedrich Pauwels. [2] Introduced in 1935, this system was the first biomechanical classification for femoral neck fractures, and is still in ...
The quadrate tubercle is located about the junction of the upper one-third and lower two-thirds, on the intertrochanteric crest.In a small anatomical study, it was shown that the epiphysial line passes directly through the quadrate tubercle. [1]
The bones of the popliteal fossa are the femur and the tibia. Like other flexion surfaces of large joints ( groin , armpit , cubital fossa and essentially the anterior part of the neck ), it is an area where blood vessels and nerves pass relatively superficially, and with an increased number of lymph nodes .
Notching of the femoral neck during the preparation of the femoral head. Exposure of cancellous bone following implantation. [3] In hip resurfacing surgery, accurately identifying the true centre of the femoral neck in both antero-posterior (AP) and lateral planes is crucial. [4] This reference point is essential for the precise positioning of ...
Examples of this form of articulation are found in the hip, where the round head of the femur (ball) rests in the cup-like acetabulum (socket) of the pelvis; and in the shoulder joint, where the rounded upper extremity of the humerus (ball) rests in the cup-like glenoid fossa (socket) of the shoulder blade. [2]