TO STUDY ASYMMETRY PRESENT IN LIMB BONES USING SKELETAL MASS INDEX AS AN ADDITIONAL PARAMETER FOR COMPARISON

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Abstract

Objective:To study asymmetry present in humeri and femora using weight, length and skeletal mass index(SMI) as
main parameters for comparison.
Material and Methods: This study work was carried out on bones collected from cadavers in Anatomy Department
of KGMC Peshawar. A total of 26 humeri and 22 femora of both right and left side were included in this study. Skeletal
mass index was calculated from weight and length as an additional parameter for this study. Total data was entered in
SPSS version 20. Student’s t-test was applied forquantitative data. A p-value of ≤ 0.05 was taken significant.
Results:The mean weight and length of right humeri, left humeri, right femora and left femora were118.38±6.23g,
113.92±6.95g, 346.81±26.63g and 337.18±34.82g and 30.26±0.44cm, 30.96±0.50cm, 42.92±0.81cm and
42.90±1.15cm respectively.The SMI of right humeri, left humeri, right femora and left femora were 1.29±0.05kg/m2,
1.17±0.05kg/m2,1.84±0.08kg/m2 and1.76±0.09kg/m2respectively.There was a significant difference when the weight,
length and SMI of humeri were compared with that of femora ipsilaterally.
Conclusion:This study concludes that more asymmetry seen in right upper limb bones could be due to right sided
dominance which is largely compensated in lower limb by environmental factors, like walking and runningleading to
less prominent asymmetry. The SMI is also a useful parameter to be used for comparing various bonesand would also
help to identify age and disease related changes in bones.
Key Words:Humerus weight. Humerus length.Limb asymmetry.Femur weight Femur length.

Authors: 
Niaz Mohammad1
Qaisar Zaman1
Anwar- ul-Haq2
Maqbool Ilahi1
Khalid
Javed
Rizwan- ul-Haq4

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