Burr R G
Paraplegia. 1978 May;16(1):68-73. doi: 10.1038/sc.1978.11.
Chemical analysis was carried out on 42 urinary phosphatic calculi obtained from 14 spinal cord patients (two to seven stones per patient) and on small samples taken from different sites in a further 17 large phosphatic calculi. In 'early' stones (removed up to 30 months after onset of the cord lesion) the ratio of calcium to magnesium was significantly higher than in 'late' stones. Samples taken from sites nearer to the centres of calculi contained more calcium and less magnesium than did those from more peripheral sites. This change in the composition of urinary calculi with time corresponds with the known alterations in urinary calcium and magnesium following spinal cord injury.
对从14例脊髓损伤患者身上获取的42枚尿磷酸钙结石（每位患者2至7枚结石）以及另外17枚大的磷酸钙结石不同部位采集的小样本进行了化学分析。在“早期”结石（脊髓损伤发病后30个月内取出）中，钙与镁的比例显著高于“晚期”结石。从结石中心附近部位采集的样本比从更外围部位采集的样本含有更多的钙和更少的镁。尿结石成分随时间的这种变化与脊髓损伤后尿钙和镁的已知变化相一致。
