Computer‐assisted surgery for dynamic hip screw, using Surgix^©, a novel intraoperative guiding system

Abstract

Background We present Surgix  , a new computer-assisted surgery system (CASS). This system uses image analysis technology in order to measure three-dimensional (3D) distances, visualize implant templates and view the guided trajectory on standard fluoroscopy. Our purpose was to compare surgery results and technique with and without the Surgix CASS.

A novel method of image-based navigation in fracture surgery

“…Beside trajectories, serving as aiming device to assist the surgeon's hand-eye control, the system can be used for distance measurements and display implants before implantation for better orientation. The expected advantages are superior implant positioning, a reduction in the number of trials to achieve the perfect position, a reduction of X-ray exposure in the OR and a decrease of the incision to closure time [10].…”

Fluoroscopy-based computer-assisted navigation for implant placement and hip resurfacing arthroplasty in the proximal femur: the zero-dose C-arm navigation approach

“…Herman et al [25] describe a signifi cant reduction of guidewire insertion trials only for surgeons experienced in using the navigation system (usage of the navigation system fi ve or more times before the study) in contrast to surgeons with lesser experience (fi ve times usage or fewer). In our experimental setting, we only achieved a signifi cant reduction of guidewire trials performing a minimally invasive procedure [43] .…”

“…We identifi ed 11 studies dealing with retrograde guidewire or drill bit navigation and subsequent implant placement in the femoral neck ( dealt with DHS placement (three experimental studies, one clinical study) [25,28,39,44] . In all of the seven experimental studies, non-fractured femurs were used.…”

“…In all of the seven experimental studies, non-fractured femurs were used. In the three clinical studies, the implants were used for fracture fi xation [10,25,35] . Chung et al [10] only report about one case of screw fi xation of a femoral neck fracture in a woman with osteogenesis imperfecta.…”

“…These systems improve the accuracy of implant placement while reducing access morbidity and radiation exposure, depending on the navigation system used. Nevertheless, using a computer-assisted navigation system interrupts the operative workfl ow, is time consuming, and requires an invasive fi xation of at least one reference marker to the bone [18,25,28,39] . As more and more orthopaedic and trauma departments are merging, investments have to be well considered.…”