| The purpose of this paper was to research the effects of the long-term stress induced by breaking brick with single palm on the size and structure of athletes'carpal bones by using computed tomography (CT).8 Wushu gongli athletes were chosen as experimental group and 6 healthy volunteers (non-athletes) as control group. Both are 20-30 years. The carpal bones of the two groups were scanned by 64-spiral CT, then the volume, relative volume and bone mineral density (BMD) of every carpal bones were measured and analysed statistically after 3D reconstruction.The results showed that:(1) The volume (2.04±0.29cm3,2.09±0.36cm3) of the trapezoideum in the experimental group was larger than that in the control (1.65±0.22cm3, 1.64±0.24cm3) (P<0.05), while no difference among other carpal bones in the groups (P>0.05); (2) There were no difference of the relative volume between two groups than the control (P>0.05); (3) There were no difference of the carpal bones between the right and left carpus in experimental group (P>0.05). The relative carpal volume did not differ between two groups (P>0.05); (4) The CT value of the right and left capitate (497.17±44.19 cm3, 520.67±57.85 cm3) in experimental group were larger than that in the control (442.50±37.17 cm3,455.83±34.82 cm3)(P<0.05); (5) The CT value of the right hamate (530.17±48.2 cm3) in experimental group were larger than that in the control (474.17±37.04 cm3) (P<0.05); (6) There were no difference between the right and left carpus in the gongli group (P>0.05).This research showed that:Such a stress stimulation to carpus would produce a slight effect on the carpal volume, that is, only the volume of the trapezoid bone were larger than the control group. There was no significant difference in the relative volume between two groups. However, the bone mineral density of captiative bone and hamate bone of the Wushu gongli athletes increased significantly. |
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