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![femur break femur break](https://i.ytimg.com/vi/gVUIcpGgd3g/maxresdefault.jpg)
Here the two trochanters, greater and lesser trochanter, are found. The transition area between the head and neck is quite rough due to attachment of muscles and the hip joint capsule. In skinny people with the thigh laterally rotated, the head of the femur can be felt deep as a resistance profound (deep) for the femoral artery. Both the head and neck of the femur is vastly embedded in the hip musculature and can not be directly palpated. An abnormal increase in the angle is known as coxa valga and an abnormal reduction is called coxa vara. In the infant it is about 150 degrees and in old age reduced to 120 degrees on average. The collum forms an angle with the shaft in about 130 degrees. long and the diameter is smallest front to back and compressed at its middle. The head of the femur is connected to the shaft through the neck or collum. It has a small groove, or fovea, connected through the round ligament to the sides of the acetabular notch. The head of the femur, which articulates with the acetabulum of the pelvic bone, comprises two-thirds of a sphere. The upper extremity is the shortest femoral extremity, the lower extremity is the thickest femoral extremity. The upper or proximal extremity (close to the torso) contains the head, neck, the two trochanters and adjacent structures. The upper extremity of right femur viewed from behind and above, showing head, neck, and the greater and lesser trochanter
![femur break femur break](https://i.ytimg.com/vi/5WMtS9hiOFY/hqdefault.jpg)
The femur is categorised as a long bone and comprises a diaphysis (shaft or body) and two epiphyses (extremities) that articulate with adjacent bones in the hip and knee. The femur length on average is 26.74% of a person's height, a ratio found in both men and women and most ethnic groups with only restricted variation, and is useful in anthropology because it offers a basis for a reasonable estimate of a subject's height from an incomplete skeleton. Some strength tests show the temporal bone in the skull to be the strongest bone. This depends on the type of measurement taken to calculate strength. By some measures, it is also the strongest bone in the human body. The femur is the largest and thickest bone in the human body. In the general population of people without either genu valgum or genu varum, the femoral-tibial angle is about 175 degrees. The opposite extreme is genu varum (bow-leggedness). In the condition genu valgum (knock knee) the femurs converge so much that the knees touch one another. Human females have thicker pelvic bones, causing their femora to converge more than in males. The angle of convergence of the femora is a major factor in determining the femoral-tibial angle. The two femurs converge medially toward the knees, where they articulate with the proximal ends of the tibiae. The femur is the only bone in the upper leg.