Retention of Arthroscopic Shoulder Skills Learned with Use of a Simulator: Demonstration of a Learning Curve and Loss of Performance Level After a Time Delay

BackgroundIn orthopaedic surgery, arthroscopy is an irreplaceable diagnostic and interventional tool, and its breadth of use is increasing. The aim of this study was to investigate the surgeonʼs capacity for retention of an unfamiliar arthroscopic skill.MethodsSix fellowship-trained lower-limb surgeons were given standardized instruction regarding the performance of an arthroscopic Bankart suture on a laboratory-based simulator. They performed three single Bankart sutures on each of four occasions, one to two weeks apart. Six months later, the same surgeons repeated the study. They received no further instruction or guidance. Their performance was objectively assessed with use of validated motion-analysis equipment to record the total path length of the surgeonʼs hands, number of hand movements, and time taken to perform the sutures.ResultsA learning curve showing significant and objective improvement in performance was demonstrated for all outcome parameters in both experiments (p < 0.005). The learning curve at six months was a repeated learning curve showing no significant difference from the initial learning curve.ConclusionsThis study objectively demonstrated a loss of all of the initial improvement in the performance of an arthroscopic Bankart suture following a six-month interval in which the surgeons did not do the procedure.Clinical RelevanceThe results indicate a need for regular repetition of some surgical tasks in order to maintain optimum performance levels and to consolidate the skills needed for newly learned procedures. It is hoped that the development of appropriately validated simulators may provide a useful tool with which trainees and established surgeons alike can acquire and maintain certain surgical skills.