不佳者 meaning in Chinese

poor responder

Insulin may be required for those who are poorly controlled
若血糖控制不佳者，亦可能需要注射胰岛素。
Methods eighteen cases of malposition of transpedicular screw internal fixation in thoracolumbar spine were detected by x - ray and the causes were analyzed according to the location of perforation
方法对行椎弓根螺钉内固定手术术中探察、 x线监测发现置钉位置不佳者18例，按穿破骨壁部位不同分析原因。