| Bone: Body of femur | |
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| Right femur. Anterior surface. | |
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| Right femur. Posterior surface. | |
| Latin | corpus femoris |
| Gray's | subject #59 243 |
| Dorlands / Elsevier |
s_09/12732595 |
The body of the femur (or shaft), almost cylindrical in form, is a little broader above than in the center, broadest and somewhat flattened from before backward below. Latin ( lingua Latīna, laˈtiːna is an Italic language, historically spoken in Latium and Ancient Rome. Introduction ( classes Long bones body or Diaphysis Medullary canal Elsevier, the world's largest Publisher of Medical and Scientific literature, forms part of the Reed Elsevier group The femur is the thigh bone In Humans, it is the longest, most voluminous and strongest Bone. It is slightly arched, so as to be convex in front, and concave behind, where it is strengthened by a prominent longitudinal ridge, the linea aspera. The linea aspera is a ridge of roughened surface on the posterior aspect of the Femur, to which are attached Muscles and intermuscular Septa.
It presents for examination three borders, separating three surfaces.
Of the borders, one, the linea aspera, is posterior, one is medial, and the other, lateral.
Linea aspera border
The linea aspera is a prominent longitudinal ridge or crest, on the middle third of the bone, presenting a medial and a lateral lip, and a narrow rough, intermediate line.
Above, the linea aspera is prolonged by three ridges.
The lateral ridge is very rough, and runs almost vertically upward to the base of the greater trochanter.
It is termed the gluteal tuberosity, and gives attachment to part of the glutæus maximus: its upper part is often elongated into a roughened crest, on which a more or less well-marked, rounded tubercle, the third trochanter, is occasionally developed. The lateral ridge of the Linea aspera is very rough and runs almost vertically upward to the base of the Greater trochanter. The gluteus maximus' (or glutæus maximus) is the largest and most Superficial of the three Gluteal muscles. The upper part of the Gluteal tuberosity is often elongated into a roughened crest on which a more or less well-marked rounded tubercle, the third trochanter, is
The intermediate ridge or pectineal line is continued to the base of the lesser trochanter and gives attachment to the pectineus; the medial ridge is lost in the intertrochanteric line; between these two a portion of the iliacus is inserted. The pectineus muscle is a flat quadrangular Muscle, situated at the anterior part of the upper and medial aspect of the Thigh. The Iliacus is a flat triangular muscle which fills the Iliac fossa.
Below, the linea aspera is prolonged into two ridges, enclosing between them a triangular area, the popliteal surface, upon which the popliteal artery rests. In Human anatomy, the popliteal artery is defined as the extension of the "superficial" Femoral artery after passing through the Adductor canal
Of these two ridges, the lateral is the more prominent, and descends to the summit of the lateral condyle.
The medial is less marked, especially at its upper part, where it is crossed by the femoral artery. The femoral artery is a large Artery in the muscles of the Thigh.
It ends below at the summit of the medial condyle, in a small tubercle, the adductor tubercle, which affords insertion to the tendon of the adductor magnus. The adductor magnus is a large triangular muscle situated on the Medial side of the Thigh.
From the medial lip of the linea aspera and its prolongations above and below, the vastus medialis arises; and from the lateral lip and its upward prolongation, the vastus lateralis takes origin. The vastus medialis, often called the 'teardrop' muscle is a Medially located Muscle of the Quadriceps. The Vastus lateralis (Vastus externus is the largest part of the Quadriceps femoris.
The adductor magnus is inserted into the linea aspera, and to its lateral prolongation above, and its medial prolongation below.
Between the vastus lateralis and the adductor magnus two muscles are attached—viz. , the glutæus maximus inserted above, and the short head of the biceps femoris arising below. The biceps femoris is a muscle of the posterior (the back Thigh.
Between the adductor magnus and the vastus medialis four muscles are inserted: the iliacus and pectineus above; the adductor brevis and adductor longus below.
The linea aspera is perforated a little below its center by the nutrient canal, which is directed obliquely upward.
Lateral border and medial border
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. The intertrochanteric line (or spiral line of the femur) is a line located on the anterior side of the head of the Femur.
Anterior surface
The anterior surface includes that portion of the shaft which is situated between the lateral and medial borders.
It is smooth, convex, broader above and below than in the center.
From the upper three-fourths of this surface the Vastus intermedius arises; the lower fourth is separated from the muscle by the intervention of the synovial membrane of the knee-joint and a bursa; from the upper part of it the Articularis genu takes origin. The Vastus intermedius (Crureus arises from the front and lateral surfaces of the body of the femur in its upper two-thirds and from the lower part of the lateral intermuscular septum Synovial membrane (or synovium) is the soft tissue that lines the non- cartilaginous surfaces within Joints with cavities ( Synovial joints The knee is the lower extremity Joint connecting the Femur, Patella, and the Tibia. The Articularis genu ( Subcrureus) is a small muscle usually distinct from the Vastus intermedius, but occasionally blended with it it arises from the anterior surface
The lateral surface includes the portion between the lateral border and the linea aspera; it is continuous above with the corresponding surface of the greater trochanter, below with that of the lateral condyle: from its upper three-fourths the Vastus intermedius takes origin.
The medial surface includes the portion between the medial border and the linea aspera; it is continuous above with the lower border of the neck, below with the medial side of the medial condyle: it is covered by the Vastus medialis.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. The public domain is a range of abstract materials &ndash commonly referred to as Intellectual property &ndash which are not owned or controlled by anyone Henry Gray's Anatomy of the Human Body (or Gray's Anatomy as it has commonly been shortened is an English-language Human anatomy Textbook As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.