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Clinical Trial Summary

The OSTEOVUE™ Spine Dissector is a new ultrasonic energy device, specifically designed for soft tissue removal from vertebral surfaces. The aim of the present study is to compare blood loss in multilevel PSF surgeries in patients with adolescent scoliosis (idiopathic or neuromuscular) done with ED or with UD. Blood loss will be estimated by major intraoperative surgical Stage (1 and 2) and postoperatively (until discharge). Additionally, the study will assess the possible influence of the device use in secondary perioperative outcomes.


Clinical Trial Description

The primary objective is to compare intraoperative blood loss between surgeries performed with monopolar electrocautery and ultrasonic energy (as the primary means for soft tissue dissection) in patients diagnosed with adolescent scoliosis undergoing multilevel (>=6) posterior spinal fusion (PSF).

This is a prospective, multicenter, pair-matched comparison study that will be carried out in two phases:

Phase I Perioperative outcome variables (primary and secondary) will be collected from patients with adolescent scoliosis, meeting the study inclusion criteria, scheduled to undergo PSF using monopolar electrocautery and metal Cobb elevator (considered the current standard) for soft tissue dissection and removal from vertebral surfaces. This group will be the Electrocautery Dissection (ED) group.

Phase II The same outcomes variables measured on the ED group during Phase I will be subsequently collected from a group of patients with adolescent scoliosis, meeting the study inclusion criteria and scheduled to undergo PSF surgery. For this study group, surgery will be performed with the Harmonic OSTEOVUE™ Spine Soft Tissue Dissector (referred to as the OSTEOVUE™ Dissector in this protocol) and metal Cobb elevator, as the primary means of soft tissue dissection and removal from vertebral surfaces. This group will be the Ultrasonic Dissection (UD) group.

Patients in the UD group will be recruited from the existing patient population of PSF candidates at each participating site.

Prior to recruitment of participants in Phase II, each Principal Investigator (PI) will have documented training/in service of the use the OSTEOVUE™ Dissector in at least 5 multilevel spine surgery cases.

The proportion of neuromuscular versus idiopathic cases recruited in Phase II will be based on the proportion of patients with either of these conditions recruited in Phase I.

Up to five US sites of orthopedic surgeons and/or neurosurgeons, with expertise in pediatric PSF surgery, will participate in the study. 100 subjects will be enrolled in this study (46 in the ED group and 54 in the UD group).

Propensity score matching will be utilized to match subjects in the ED group to subjects in the UD group. Propensity scores will be based on the variables known to influence blood loss, and full details of the matching methodology will be provided in a separate Statistical Analysis Plan. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02465099
Study type Interventional
Source Ethicon Endo-Surgery
Contact
Status Terminated
Phase Phase 4
Start date June 1, 2015
Completion date May 1, 2016

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