Spine
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A multicenter cross-cultural study to re-evaluate the reliability and validity of the simplified Chinese version of Scoliosis Research Society-22 (SRS-22) Patient Questionnaire. ⋯ The simplified Chinese version of the SRS-22 Questionnaire was re-evaluated by a multicenter study to respect the diversity of population and cultural differences in mainland China, which showed good internal consistency and satisfactory test-retest reproducibility. It might be useful for clinical evaluation of Chinese adolescents and young adults with scoliosis treated with bracing or surgery, although it also encountered previously reported difficulties with some of the items related to different cultures and health care systems.
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STUDY DESIGN.: Retrospective radiographic review. OBJECTIVE.: To determine the incidence of osteolysis, graft subsidence, and cage migration after recombinant human bone morphogenetic protein-2 (rhBMP-2) use with transforaminal lumbar interbody fusion (TLIF). SUMMARY OF BACKGROUND DATA.: Osteolysis after TLIF is a recently described phenomenon associated with rhBMP-2 use. ⋯ CONCLUSION.: rhBMP-2 use with TLIF is associated with a significant risk of postoperative osteolysis. Patients who demonstrated postoperative osteolysis were associated with significant risk of subsidence or migration of the intervertebral cage. The clinical implications of these changes are not currently known.
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In vitro biomechanical study evaluating the effect of fusion levels on simulated S1 screws on calf spines. ⋯ All three stresses, flexion moment, transverse load, and screw pullout force, must be considered in studying the biomechanics of long-fusion construct. There was no significant increase in sacral screw loading with increasing fusion levels when the same flexion moment was applied. It is postulated that the higher load present in long-fusion construct may lead to the premature failure of the lumbosacral fixation.
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Comparative Study
Anterior Z-plate and titanic mesh fixation for acute burst thoracolumbar fracture.
A retrospective study. ⋯ The authors considered spinal cord decompression with anterior corpectomy and stability reconstruction with titanic mesh autograft and Z-plate fixation at same time in one incision as an effective technique for unstable thoracolumbar burst fracture with and without neurologic deficit.
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Comparative Study
Preoperative fibrinogen plasma concentration is associated with perioperative bleeding and transfusion requirements in scoliosis surgery.
Prospective observational study. ⋯ The results indicate that preoperative fibrinogen concentration is a limiting factor for postoperative hemostasis during and after scoliosis surgery. Preoperative measurement of fibrinogen concentration provides more information about bleeding volume and transfusion requirements than standard screening tests.