Spine
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Randomized Controlled Trial
Index and adjacent level kinematics after cervical disc replacement and anterior fusion: in vivo quantitative radiographic analysis.
Prospective, randomized trial. ⋯ TDR with the porous coated motion implant is able to restore and maintain lordotic alignment and disc height and maintain angular motion while allowing for similar translation to that seen before surgery. In contrast, after ACDF, the superior adjacent level developed increased angular motion compared with preoperative range of motion. This study provides in vivo data regarding the functioning of TDR and ACDF and their impact on adjacent-level kinematics.
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Randomized Controlled Trial Comparative Study
Unilateral versus bilateral balloon kyphoplasty for multilevel osteoporotic vertebral compression fractures: a prospective study.
A prospective study of patients who underwent multilevel balloon kyphoplasty at a single institute. ⋯ Both unilateral and bilateral kyphoplasty markedly improve symptom-related clinical effects of multilevel vertebral compression fractures and result in significant vertebral height restoration and kyphosis correction that remains stable for at least 2 years after treatment.