title: Unilateral Pedicle Fracture Accompanying Spondylolytic Spondylolisthesis.
abstract: Unilateral pedicle stress fracture accompanying spondylolytic spondylolisthesis is rare even in the elderly. Most are associated with major trauma, previous spine surgery, or stress-related activity. Here, the authors describe an unique case of unilateral pedicle fracture associated with spondylolytic spondylolisthesis at the L5 level, which was successfully treated by posterior lumbar interbody fusion with screw fixation at the L5-S1 level. As far as the authors' knowledge, no such case has been previously reported in the literature. The pathophysiological mechanism of this uncommon entity is discussed and a review of relevant literature is included.
authors.affiliation: Department of Neurosurgery, Heori Sarang Hospital, Daejeon, Korea.
authors.forename: Hyeun Sung
authors.initials: HS
authors.lastname: Kim
authors.affiliation: Department of Neurosurgery, College of Medicine, Chosun University, Gwangju, Korea.
authors.forename: Seok Won
authors.initials: SW
authors.lastname: Kim
authors.affiliation: Department of Neurosurgery, College of Medicine, Chosun University, Gwangju, Korea.
authors.forename: Chang Il
authors.initials: CI
authors.lastname: Ju
authors.affiliation: Department of Internal Medicine, College of Medicine, Chosun University, Gwangju, Korea.
authors.forename: Yun Sung
authors.initials: YS
authors.lastname: Kim
keywords: Fracture; Pedicle; Spondylolysis