Fig. 1From: A comparison of the bilateral decompression via unilateral approach versus conventional approach transforaminal lumbar interbody fusion for the treatment of lumbar degenerative disc disease in the elderlyThe exposure of the pedicle entry point through the Wiltse’s approach. a: The self-designed mini-retractor b&c: Intraoperative usage of the self-designed mini-retractor and the exposion of pedicle entry pointBack to article page