title: Transpedicular vertebral body augmentation reinforced with pedicle screw fixation in fresh traumatic A2 and A3 lumbar fractures: comparison between two devices and two bone cements.
abstract: This retrospective study compares efficacy and safety of balloon kyphoplasty (BK) with calcium phosphate (Group A) versus KIVA implant with PMMA (Group B) reinforced with three vertebrae pedicle screw constructs for A2 and A3 single fresh non-osteoporotic lumbar (L1-L4) fractures in 38 consecutive age- and diagnosis-matched patient populations. Extracanal leakage of both low-viscosity PMMA and calcium phosphate (CP) as well as the following roentgenographic parameters: segmental kyphosis (SKA), anterior (AVBHr) and posterior (PVBHr) vertebral body height ratio, spinal canal encroachment (SCE) clearance, and functional outcome measures: VAS and SF-36, were recorded and compared between the two groups. All patients in both groups were followed for a minimum 26 (Group A) and 25 (Group B) months. Extracanal CP and PMMA leakage was observed in four (18 %) and three (15 %) vertebrae/patients of group A and B, respectively. Hybrid fixation improved AVBHr, SKA, SCE, but PVBHr only in group B. VAS and SF-36 improved postoperatively in the patients of both groups. Short-segment construct with the novel KIVA implant restored better than BK-fractured lumbar vertebral body, but this had no impact in functional outcome. Since there was no leakage difference between PMMA and calcium phosphate and no short-term adverse related to PMMA use were observed, we advice the use of PMMA in fresh traumatic lumbar fractures.
authors: Orthopaedic Department, General Hospital "Agios Andreas", Charalabi Str. 65-67, Patras, Greece, korovess@otenet.gr.
authors: Panagiotis
authors: P
authors: Korovessis
authors: Konstantinos
authors: K
authors: Vardakastanis
authors: Thomas
authors: T
authors: Repantis
authors: Vasilios
authors: V
authors: Vitsas
mesh_terms: D016063:Blood Loss, Surgical; D001843:Bone Cements / Q000627:therapeutic use*; D002130:Calcium Phosphates / Q000627:therapeutic use; D016022:Case-Control Studies; D004867:Equipment Design; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods; D006801:Humans; D058498:Kyphoplasty / Q000295:instrumentation / Q000379:methods; D007902:Length of Stay; D008159:Lumbar Vertebrae / Q000293:injuries* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D065289:Pedicle Screws; D019904:Polymethyl Methacrylate / Q000627:therapeutic use; D011183:Postoperative Complications / Q000209:etiology; D012189:Retrospective Studies; D016103:Spinal Fractures / Q000601:surgery*; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements; D002130:Calcium Phosphates; D019904:Polymethyl Methacrylate; C020243:calcium phosphate
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