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Lower Bone Mineral Content Maintained Over Four Years In Girls With Distal Forearm Fractures

By David Ball

Bone mineral content (BMC) gain does not improve in girls following distal forearm fractures, remaining lower at most sites for at least four years.

 Investigators at the University of Otago, Dunedin, New Zealand, in previous research, found such patients had weaker skeletons compared with girls who never fractured, though it was not clear whether this was a transient or persistent phenomenon.

 This study of 163 girls aimed to see if there was a catch-up gain four years post fracture or if BMC remained lower. Baseline and follow-up dual energy X-ray absorptiometry (DXA) results were reported for two original groups of 81 girls who remained free of fracture, group 1, and 82 girls with distal forearm fractures, group 2.

 Baseline data (adjusted for bone area, height, weight, and pubertal status) showed group 2 girls to have 3.5-8.5 percent less BMC than group 1 controls at the total body, lumbar spine, ultradistal radius and hip trochanter. At follow-up, they had 2.4-5.7 percent less BMC at these sites. Moreover, at follow-up 58 girls in group 2 who had no other fracture after baseline showed no greater BMC values at any site.

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