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Impact of an Outer Sleeve on an Inflatable Balloon Tamp in Phrases of Top Restoration Underneath Simulated Physiological Load.
Clin Backbone Surg. 2017 Apr;30(three):E211-E218
Authors: Peppelman WC, Beutler W, Gordon M, Chintakunta SR, O’Halloran D, Bucklen B
Summary
STUDY DESIGN: An in vitro biomechanical research.
OBJECTIVE: The goal of this research was to find out the impact of an non-compulsory sleeve on peak restoration and examine it with the fracture discount achieved by a commercially accessible inflatable bone tamp below simulated physiological load (110 N).
SUMMARY OF BACKGROUND DATA: Lack of discount after bone tamp deflation earlier than cement injection nonetheless stays a priority. The non-compulsory sleeve surrounds the bone tamp to assist keep peak through the kyphoplasty process whereas filling the created cavity with bone cement on the contralateral facet.
METHODS: Eighteen osteoporotic vertebral our bodies (VBs) (T11-L4) have been alternately assigned to 1 of the two remedy teams: group A: KYPHON (Kyphon Inc.) and group B: AFFIRM with sleeve (Globus Medical Inc.). The VBs have been compressed axially at a price of 5 mm/min till compressed to 40% of the preliminary anterior peak. The fractured VBs then underwent kyphoplasty with cement augmentation whereas nonetheless sustaining load (110 N). The augmented VBs have been then recompressed and anterior VB peak (mm) and wedge angle (levels) have been measured initially after mechanically creating an anterior wedge fracture, and after repairing the compression fracture. The impact of kyphoplasty on vertebral peak, kyphotic angle, cement volumes, and inflation pressures have been in contrast between the remedy teams. Failure load (N) information have been in contrast between intact and repaired VBs.
RESULTS: Common share of misplaced VB peak restored in group A was 30%, in contrast with 56% for group B. The imply adjustments in wedge angle have been much like these of vertebral peak measurements. No important distinction in imply inflation pressures (group A: 175±37 psi; group B: 160±36 psi) have been discovered between the two teams. Common share enhance in failure load was 241% and 212% in teams A and B, respectively.
CONCLUSIONS: Some peak restoration was noticed utilizing the commercially accessible bone tamp in fractured VBs below simulated physiological load. The usage of an outer sleeve considerably enhanced peak restoration in contrast with the inflatable bone tamp alone.
PMID: 28323702 [PubMed – indexed for MEDLINE]