Five canines in group A were subjected medical ozone injection into selected lumbar discs ( 3 ml ) and the paraspinal space ( 7 ml ) with 20 G Chiba needle under fluoroscopy.

• A组包括5只犬，透视下用20 G Chiba针刺入犬腰椎间隙中心部，抽取10ml臭氧，3ml注入椎间盘，退针至椎间孔处将剩余气体注入椎旁组织。