Maximum (Anatomical) Femur Length
Definition
The bone length measured from the most superior point of the femoral head to the most inferior point of the femoral condyles with the bone laid flat on an osteometric board, regardless of shaft angle. The measurement definition used in the 1958 Trotter-Gleser and all major Indian stature equations; distinct from the physiological (bicondylar) length used erroneously in some 1952 equations.
- Measured from
- Femoral head to femoral condyles
- Method
- Bone laid flat on an osteometric board
- Used in
- 1958 Trotter-Gleser and Indian stature equations
- Distinct from
- Physiological (bicondylar) length
Common questions
Why does the choice between anatomical and bicondylar length matter for stature estimation?+
Some 1952 equations were built using bicondylar length but are sometimes mistakenly applied to anatomical-length measurements, producing a systematic stature error, so matching the measurement method to the equation it was derived from is essential.
Why measure the bone laid flat rather than along the natural shaft angle?+
Laying the femur flat on an osteometric board standardises the measurement regardless of individual variation in shaft curvature, giving a reproducible length that matches how the reference equations were originally derived.
Related terms
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- Auerbach-Ruff 2004 Method
- A body-mass estimation method using bi-iliac (maximum pelvic) breadth combined with stature, providing an alternative proxy when the femoral head is absent...
- Crural Index
- The ratio of tibia length to femur length, multiplied by 100. Varies systematically between populations: higher (relatively longer tibia) in tropical populations,...
- Femoral Head Diameter (FHD)
- The superoinferior diameter of the femoral head, measured at the widest point perpendicular to the neck axis. The primary skeletal proxy for...
- Mukherjee-Bandyopadhyay Equations
- Population-specific stature regression equations for Bengali Indian males and females, published in 1955 from cadaveric material at Calcutta Medical College. The male...
- Ruff-Scott-Walker 1997 Method
- The principal body-mass estimation method from skeletal remains, using femoral head diameter (and, in the Auerbach-Ruff 2004 extension, bi-iliac breadth combined with...
- Standard Error of Estimate (SEE)
- The statistical uncertainty around a regression-based stature estimate, representing the range within which approximately 68 per cent of individuals in the derivation...
- Stature Regression Equation
- A mathematical equation derived from a reference skeletal sample with known stature and long-bone measurements, used to estimate living stature from measured...
- Trotter-Gleser Equations
- The foundational US stature regression equations published by Mildred Trotter and Goldine Gleser in 1952 (from WWII casualties) and revised in 1958...