成人四肢长骨的非对称性

本文测量了乌鲁木齐地区出土的200副成年四肢长骨。在左、右两侧长度相差大于0.1厘米时,四肢六骨(男性腓骨除外)均以非对称性为主。若以肱骨+桡骨、股骨+胫骨长作为上、下肢长,则右上肢与左下肢占优势,上、下肢单侧优势呈交叉关系。 在左右侧重量相差大于1％时,四肢六骨不论男女也均以非对称性为主,其中上肢以右大于左的占先势,而下肢也以右大于左的居多,在重量上看不出上、下肢单侧优势呈交叉关系。

ASYMMETRY IN LONG BONES OF ADULT LIMBS

200 sets of Long bones of adult limbs unearthed in the area of Urumqi have been . The author has found out the fact that if the difference between the right limbs and left limbs is over 0. 1 cm in length, there exists an asymmetry which is dominant among the six long bones of limbs (except for fibula of a male). If humerus plus radius is taken as the length of upper limb and femur plus tibia as that of lower limb,the right upper limb and left lower limb are dominant in length, this domination reveals an intersecting relationship. If the right limbs and left limbs differ in weight by 1 % ,another asymmetry in weight still dominates, no matter whether it is a male or female. The right upper limb dominates over the left upper limb in weight, and the right lower limb does its counterpart,too. However,it is proven that no intersecting relationship indicates the domination of asymmetry in weight.