Background Revision spinal deformity surgery has a high rate of complications. Fixation may
be challenging due to altered anatomy. Screws through a fusion mass are an alternative to …

Study design To report the use of a posterior based 'fusion mass screw'(FMS) as a primary
or salvage fixation point in a revision spinal deformity following a previous posterior spinal …

OBJECTIVE A previous multilevel fusion mass encountered during revision spinal deformity
surgery may obscure anatomical landmarks, making instrumentation unworkable or …

Abstract Background Context Dramatic increases in the average life expectancy have led to
increases in the variety of degenerative changes and deformities observed in the aging …

05). In Group 2, the mean maximum pull out strength of the GSS screws was 127% of that of
the CCD control screws, while the mean maximum pull out strength of the TSRH screws was …

Study Design. A retrospective study. Objective. To evaluate the safety of free-hand pedicle
screw placement during revision surgery at levels with a solid posterior fusion mass and/or …

Background Adult spinal deformity (ASD) is caused by spinal malalignment and results in
severe low back pain, neurological dysfunction, and severe deformity. Surgical treatment …

Objective To compare the outcomes of S1 foraminal hooks and iliac screws regarding fusion
rate at the lumbosacral junction and protective effects on S1 screws. Methods From January …

Study Design: Retrospective cohort study. Objective: Screw loosening in spinal fusion is
poorly defined. Accordingly, its prevalence rates range from 1% to 60%, and its risk factors …

Background Cement augmentation is a technique used to increase the stability and
purchase of pedicle screws in poor quality bone. Various methods can be applied for …