- Femur neck
Bone: Femoral neck Upper extremity of right femur viewed from behind and above. Right femur. Anterior surface. Latin collum femoris Gray's subject #59 243 MeSH femur+neck
Angle of inclination
The angle is widest in infancy, and becomes lessened during growth, so that at puberty it forms a gentle curve from the axis of the body of the bone. In the adult, the neck forms an angle of about 125° with the body, but this varies in inverse proportion to the development of the pelvis and the stature. The angle decreases during the period of growth, but after full growth has been attained it does not usually undergo any change, even in old age; it varies considerably in different persons of the same age.
It is smaller in short than in long bones, and when the pelvis is wide.
In addition to projecting upward and medialward from the body of the femur, the neck also projects somewhat forward; the amount of this forward projection is extremely variable, but on an average is from 12° to 14°.
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 medial half is smaller and of a more circular shape.
The anterior surface of the neck is perforated by numerous vascular foramina.
Along the upper part of the line of junction of the anterior surface with the head is a shallow groove, best marked in elderly subjects; this groove lodges the orbicular fibers of the capsule of the hip-joint.
The superior border is short and thick, and ends laterally at the greater trochanter; its surface is perforated by large foramina.
The inferior border, long and narrow, curves a little backward, to end at the lesser trochanter.
Bones of lower limbs (TA A02.5.04–18, GA 2.242–277) Femur CrusOtherpatella (apex of patella) FootOther
Wikimedia Foundation. 2010.
Look at other dictionaries:
Neck of talus — Left talus, from above. Latin collum tali Gray s … Wikipedia
Femur — The femur is the bone in the leg that extends from the hip to the knee. The femur constitutes the upper leg, that part of the leg above the knee. As compared to the lower leg which boasts two bones (the tibia and the fibula), the upper leg has… … Medical dictionary
Femur head — Infobox Bone Name = Femur head Latin = caput femoris GraySubject = 59 GrayPage = 243 Caption = Upper extremity of right femur viewed from behind and above. Caption2 = System = MeshName = femur+head MeshNumber = A02.835.232.043.650.247.343… … Wikipedia
Fémur (anatomía humana) — Para otros usos de este término, véase Fémur (desambiguación). Este artículo o sección necesita referencias que aparezcan en una publicación acreditada, como revistas especializadas, monografías, prensa diaria o páginas de Internet fidedignas.… … Wikipedia Español
neck — 1. Part of body by which the head is connected to the trunk : it extends from the base of the cranium to the top of the shoulders. 2. In anatomy, any constricted portion having a fancied resemblance to the n. of an animal. 3. The germinative… … Medical dictionary
femur — /fee meuhr/, n., pl. femurs, femora /fem euhr euh/. 1. Anat. a bone in the human leg extending from the pelvis to the knee, that is the longest, largest, and strongest in the body; thighbone. See diag. under skeleton. 2. Zool. a corresponding… … Universalium
femur — thigh bone; n. a long bone between the hip and the knee. The head of the femur articulates with the acetabulum of the hip bone. The greater and lesser trochanters are protuberances on which the gluteus and psoas major muscles, respectively, are… … The new mediacal dictionary
Upper extremity of femur — The upper extremity of femur contains the following sttuctures: * Femur head * Femur neck * Greater trochanter * Lesser trochanter * Tubercle of the femur * Intertrochanteric line * Intertrochanteric crest * Linea quadrata … Wikipedia
femoral neck — neck of femur collum femoris … Medical dictionary
Medial condyle of femur — Bone: Medial condyle of femur Lower extremity of right femur viewed from below … Wikipedia