Premium
Prediction of the femoral neck‐shaft angle from the length of the femoral neck
Author(s) -
Isaac B.,
Vettivel Selvakumar,
Prasad Rajendra,
Jeyaseelan L.,
Chandi G.
Publication year - 1997
Publication title -
clinical anatomy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 71
eISSN - 1098-2353
pISSN - 0897-3806
DOI - 10.1002/(sici)1098-2353(1997)10:5<318::aid-ca5>3.0.co;2-m
Subject(s) - medicine , femoral neck , femoral shaft , anatomy , surgery , orthodontics , femur , osteoporosis
A total of 171 adult South Indian femora, devoid of gross pathology, are used to measure the neck‐shaft angle, length of the neck, intertrochanteric apical axis length, maximum vertical diameter of the head, kinematic radius, and maximum femoral length. The neck‐shaft angle ranges from 120° to 136° with a mean of 126.7° and no significant side difference. The angle significantly and positively correlates with neck length, intertrochanteric apical axis length, kinematic radius, and minimum femoral length ( P < 0.001) but not with the vertical diameter of the head. Regression equations for the neck‐shaft angle against the correlated parameters are derived but only that against the length of the neck is strongly significant. From those correlations, 1) the neck‐shaft angle can be estimated from a proximal femoral fragment, and 2) the required size of the length of the neck can be determined to design prostheses for the restoration of normal neck‐shaft angle. Further, any estimated defective angle can be of help for forensic identification of an individual with pathological changes leading to an abnormal gait. Clin. Anat. 10:318–323, 1997. © 1997 Wiley‐Liss, Inc.