| Objective: To review current literature regarding the etiology, diagnosis, and conservative treatment of spondylolysis and spondylolytic spondylolisthesis. Methods: The PubMed database was searched for articles on spondylolysis and/or spondylolisthesis and their incidence, diagnosis, imaging, treatment, and prognosis. The bibliographies of articles determined to be relevant were also reviewed. Results: A PubMed search of spondylolysis or spondylolisthesis yielded over 800 citations. Sixty-eight articles were selected based on an opinion of perceived relevance to the subjects of spondylolysis and spondylolisthesis. Conclusions: Spondylolysis affects approximately 6% of the population. The lesion likely represents a stress fracture and the typical age of onset is early childhood and adolescence. Most individuals are asymptomatic. Adolescents with low back pain may have an impending or new pars defect. A high index of suspicion for a new pars defect should prompt utilization of physiologic imaging to determine the likelihood of pars union in young patients. Restrictive bracing may lead to healing of the fracture and cessation of pain. Spondylolisthesis is a common complication of spondylolysis. Spondylolisthesis progression is typically small and most likely in young individuals. Significant progression in adults is rare. The finding of spondylolysis and spondylolisthesis in an adult patient is usually incidental and not likely to be a direct source of pain unless there is concurrent instability. First author: Daniel W. Haun This abstract is reproduced with the permission of the publisher; click on the above link for free full text.
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