![]() ![]() Senior residents tied knots significantly faster but with similar tubing displacement as juniors. The attending surgeons tied 2-handed knots faster and with significantly more vertical tubing displacement than residents. KTB development required 100 hours and $70.00. This study was conducted at the Indiana University Surgical Skills Center in Indianapolis, IN.įorty-seven residents and faculty participated in the study (26 juniors, 14 seniors, 7 attendings). Differences in time and tubing displacement were compared among junior residents (postgraduate year 1-2), senior residents (postgraduate year 3-5), and attending surgeons p < 0.05 was considered statistically significant. Participants used a standardized technique to tie 1- and 2-handed knots. Joystick potentiometers were incorporated on 2 parallel rubber tubes to measure vertical and horizontal displacement while tying. The novel KTB was developed in collaboration between engineering students and surgical educators. This study aimed to develop a novel, low-cost, knot tying board (KTB) that collects objective, automated metrics of knot displacement, and assesses knot displacement by level of surgical expertise. Development of a model that assesses tissue displacement during knot tying may provide a good surrogate for respect for tissue, allow detection of expertise, and offer an improved training platform for skill acquisition. ![]() Existing knot tying models assess tying efficiency and errors but do not address respect for tissue. Knot tying is a fundamental surgical skill. ![]()
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