Precision Freehand Sculpting of Bone
نویسندگان
چکیده
The Precision Freehand Sculptor (PFS) is a compact, handheld, intelligent tool to assist the surgeon in accurately cutting bone. A retractable rotary blade on the PFS allows a computer to control what bone is removed. Accuracy is ensured even though the surgeon uses the tool freehand. The computer extends or retracts the blade based on data from an optical tracking camera. Three users used each of three PFS prototype concepts to cut a faceted shape in wax. The results of this experiment were analyzed to identify the largest sources of error.
منابع مشابه
The Accuracy of a Robotically-controlled Freehand Sculpting Tool for Unicondylar Knee Replacement
Surgical robotics with navigation has the potential to improve the accuracy of unicondylar knee replacement. Precision freehand sculpting tools allow the surgeon to accurately execute their surgical plan. A controlled study comparing the planned and final placement of uni compartmental knee replacement implants in nine cadavers. A quantitative assessment analysed the translation and rotational ...
متن کاملHigh degree of accuracy of a novel image-free handheld robot for unicondylar knee arthroplasty in a cadaveric study.
BACKGROUND Surgical robotics has been shown to improve the accuracy of bone preparation and soft tissue balance in unicondylar knee arthroplasty (UKA). However, although extensive data have emerged with regard to a CT scan-based haptically constrained robotic arm, little is known about the accuracy of a newer alternative, an imageless robotic system. QUESTIONS/PURPOSES We assessed the accurac...
متن کاملAccuracy of implant placement using precision surgical guides with varying occlusogingival heights: an in vitro study.
STATEMENT OF PROBLEM Surgical guides may interfere with effective use of surgical instrumentation during implant placement in the posterior segments where interocclusal distance may be limited. PURPOSE The purpose of this study was to measure and compare the accuracy of posterior implant placement using 3 precision surgical guides with varying occlusogingival heights, and to evaluate the diff...
متن کاملIterative Non-linear Dimensionality Reduction with Manifold Sculpting
Many algorithms have been recently developed for reducing dimensionality by projecting data onto an intrinsic non-linear manifold. Unfortunately, existing algorithms often lose significant precision in this transformation. Manifold Sculpting is a new algorithm that iteratively reduces dimensionality by simulating surface tension in local neighborhoods. We present several experiments that show M...
متن کاملAcetabular Placement Accuracy With the Direct Anterior Approach Freehand Technique.
BACKGROUND Acetabular cup placement in total hip arthroplasty (THA) has been recognized as an important factor in operative success, and accurate cup placement has been the impetus for novel medical technologies. METHODS This article examines the cup placement in 955 THAs using a freehand Direct Anterior Approach on a standard operating table. Acetabular anteversion and inclination were deter...
متن کامل