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The intermembral index is a ratio used to compare limb proportions, expressed as a percentage. [1] It is equal to the length of forelimbs (humerus plus radius) divided by the length of the hind limbs (femur plus tibia) multiplied by 100, [2] otherwise written mathematically as:
For example, human body height is to be the length of eight heads, with an additional one-quarter head for neck length. Leg length is to be four head lengths. [1] Forensic estimation of stature is part of the identification process necessary when dismembered body parts are found. It is also possible to estimate the stature from bones. [2]
The femur is the largest and thickest bone in the human body. It is considered the strongest bone by some measures, though other studies suggest the temporal bone may be stronger. On average, the femur length accounts for 26.74% of a person's height, [4] a ratio found in both men and women across most ethnic groups with minimal
the ratio of hip circumference to shoulder circumference varies by biological sex: the average ratio for women is 1:1.03, for men it is 1:1.18. [9] legs (floor to crotch, which are typically three-and-a-half to four heads long; arms about three heads long; hands are as long as the face. [10]
In humans, the two femurs converge medially toward the knees, where they articulate with the proximal ends of the tibiae.The angle of convergence of the femora is a major factor in determining the femoral-tibial angle.
On X-rays, there is generally measurement of both the femur and the tibia, as well as both combined. [4] Various measuring points for these have been suggested, but a functional method is to measure the distances between joint surfaces: [4] Femur length: The superior aspect of the femoral head and the distal portion of the medial femoral condyle.
Both men and women generally consider long legs attractive, [69] which may explain the preference for tall fashion models. Men also tend to favor women who have a higher leg length to body ratio, but the opposite is true of women's preferences in men. [67] Adolescent and adult women in many Western cultures often remove the hair from their legs ...
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 gluteus 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 ...