Denham M J, Hodkinson H M, Wright B M
Gerontol Clin (Basel). 1975;17(1):7-12. doi: 10.1159/000245548.
A study of clubbing, assessed by spherometer measurements of fingernail-skinfold angle, was made in recent and long-established hemiplegic elderly patients. This showed that clubbing developed in all digits studied and that it increased with the duration of the stroke. Clubbing did not correlate with the grip strength of the weakened hand.
一项通过用曲率计测量指甲-皮肤皱襞角度来评估杵状指的研究，在近期发生偏瘫的老年患者和长期存在偏瘫的老年患者中展开。结果显示，在所有研究的手指中均出现了杵状指，并且其随着中风持续时间的延长而加重。杵状指与患侧手的握力无关。
