The accuracy of navigated versus freehand curettage in bone tumors: a cadaveric model study.

Purpose: Navigation has been suggested to guide complex benign bone tumor curettage procedures, but the contribution of navigation to the accuracy of curettage has never been quantified. We explored the accuracy of navigated curettage in a cadaveric observational pilot study, comparing navigated to freehand curettage, performed independently by an expert and a novice user.

Methods: The expert performed curettage on 20 cadaveric bones prepared with a paraffin wax mixture tumor, 10 freehand and 10 navigated.

A New Craniothoracic Mattress for Immobilization of the Cervical Spine in Critical Care Patients.

Current immobilization techniques of the cervical spine are associated with complications including pressure ulcers, discomfort, and elevated intracranial pressures with limited access to the thorax and airway. In this study, a newly developed craniothoracic immobilizer (Pharaoh mattress) for critical care patients with cervical injury was tested for its restriction of cervical movement, peak interface pressures, comfort, and radiolucency, and compared with headblocks strapped to a spineboard. Cervical movement was measured by roentgen stereophotogrammetric analysis in 5 fresh frozen cadavers.

Restriction of Cervical Intervertebral Movement With Different Types of External Immobilizers: A Cadaveric 3D Analysis Study.

Study Design: Cadaveric radiostereometric analysis study.

Objective: To quantify the ability of five commonly used immobilizers to restrict cervical spine movement, including intervertebral movement, in three directions.

Summary Of Background Data: Evidence about the ability of many clinically used cervical immobilizers to restrict cervical movement is limited.