title: The effect of lordosis, disc height change, subsidence, and transitional segment on stand-alone anterior lumbar interbody fusion using a nontapered threaded device.
abstract: In this study, we retrospectively evaluated 37 consecutive patients who underwent stand-alone anterior lumbar interbody fusion (ALIF); for indications that included degenerative disc disease, concordant pain on discography, disc space collapse of more than 50%, and failure of nonoperative management for at least 4 consecutive months. Patient demographics, procedural data, and prospective Short Form 36 General Health Survey composite scores were collected. Mean follow-up was 24.2 months. In this cohort of patients with degenerative disc disease, there was no loosening or migration of implants. Stand-alone ALIF using a threaded interbody fusion device provided excellent clinical results and return-to-work rates with few complications. Increased lordosis was associated with increased subsidence and less favorable outcome. Patients with a transitional segment displayed relatively smaller increases in lordosis and better outcomes than patients without a transitional segment.
authors: Fort Wayne Orthopaedics, IN, USA. spine@fwortho
authors: Kevin A
authors: KA
authors: Rahn
authors: Robert M
authors: RM
authors: Shugart
authors: Mark W
authors: MW
authors: Wylie
authors: Kartheek K
authors: KK
authors: Reddy
authors: Joseph A
authors: JA
authors: Morgan
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007403:Intervertebral Disc / Q000601:surgery*; D008141:Lordosis / Q000601:surgery*; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013123:Spinal Fusion / Q000295:instrumentation* / Q000379:methods; D016896:Treatment Outcome