Dzuraimy, Ismail
(2008)
A cross sectional study of the
proximal femur morphology of
the normal malay population
using computed tomography
images (scanogram) at HUSM.
Masters thesis, Universiti Sains Malaysia.
Abstract
A cross sectional study on the morphometry of proximal femur in Malay patients who
were treated in Hospital Universiti Sains Malaysia.
Objectives
To quantify the proximal femur dimensions in Malay patients, to compare the parameters
between male and female patients and to determine the correlation between the
parameters.
Summary of the Background Data
Previous studies have shown a significantly smaller proximal femur parameters in the
Asian population compared to Caucasian population. Currently used proximal femur
implants size were based on Caucasian studies. However, due to the smaller size of
proximal femur in Asian population, improvement in the design of implant are required
to optimize component fixation and to restore the normal biomechanics of the hip joint.
Methods
Proximal femoral bones were studied in 140 patients ( 70 male and 70 female ) who had
undergone computerized tomographic scan for various pelvic pathology but with normal
proximal femur morphology. The age range was between 18 to 80 years old. The
VII
following parameters were studied : 1) Femoral neck shaft angle, 2) Femoral head
diameter, 3) Femoral neck isthmus diameter, 4) Vertical offset of femur, 5) Horizontal
offset of femur. The data obtained were statistically analyzed using independent T -test to
determine the differences between male and female patients. The mean of all the
parameters of current study were compared with published Western and Asian studies
using one sample T -test. Significant differences for all the statistical test were set at
p < 0.05.
Results
There were significant differences between male and female patients in femoral head
diameter, femoral neck isthmus diameter, vertical offset and horizontal offset. However,
there was no significant difference in neck shaft angle. Female patients have
significantly smaller dimensions in all the parameters measured except for neck shaft
angle which was larger.
When the observations in the current study was compared to radiographic study by
Sugano et al and Noble et al, significant differences were found in head diameter, neck
isthmus diameter, vertical offset and neck shaft angle. The head diameter, neck isthmus
diameter and vertical offset of the current study were significantly smaller compared to
their study. However the neck shaft angle of the current study was significantly larger
than their study.
Vlll
Conclusions
The current study have shown that the proximal femur morphometry of Malay
population was smaller compared to Caucasian and Thai population.
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