A ball-slide-type interbody distractor is effective in posterior reduction and internal fixation for patients with mid- to high-grade isthmic spondylolisthesis enrolled in a randomized clinical trial

Title : A ball-slide-type interbody distractor is effective in posterior reduction and internal fixation for patients with mid- to high-grade isthmic spondylolisthesis enrolled in a randomized clinical trial

Abstract:

Posterior reduction and internal fixation is the effective treatment for spondylolisthesis. However, for the mid and high-grade isthmic spondylolisthesis patients with the conditions of vertebral osteoporosis and extremely narrow intervertebral space, the reduction is difficult; post-surgery intervertebral space height lost becomes serious; the fracture and loosening rate of fixation system is higher. Posterior reduction and internal fixation by ball-point slide-type interbody distractor were assigned to the investigational group. X-ray examination was performed before and after operation. The degree of reduction, height of intervertebral space were compared. The preoperative and postoperative Visual Analog Scale (VAS) and Oswestry Disability Index (ODI) were evaluated. Additionally, rate of the fixation system fracture was also assessed. The ball-point slide-type interbody distractor in the posterior reduction and internal fixation produced good outcomes after 12-month treatment.

Biography:

Dr. Pengfei Li studied Clinical Medicine as an undergraduate at North China University of Science and Technology University from 2003 to 2008. He then pursued a master's degree in Orthopedic Surgery at Hebei Medical University, graduating in 2011. In 2015, he focused on the spinal direction during his doctoral studies and obtained his PhD degree. In 2019-2025, he became a postdoctoral fellow under the supervision of Academician Zhang Yingze, the National Chairman of Orthopedics. He has published more than 40 research articles in SCI (E) and Domestic core journals.