title: Motion analysis as a tool for the evaluation of oculoplastic surgical skill: evaluation of oculoplastic surgical skill.
abstract: OBJECTIVE
  To evaluate motion analysis as a discriminator of ophthalmic plastic surgical skill between surgeons of varying experience.
  
  
  METHODS
  Thirty subjects were divided into 3 groups based on surgical experience: novice (< 5 performed procedures; n = 10), intermediate (5-100 procedures; n = 10), and expert (> 100 procedures; n = 10). Detailed 3-dimensional motion data from surgeons performing 2 oculoplastic surgical tasks on a wet laboratory skills board were obtained using the Qualisys motion capture system. The first task was a deep 3-1-1 suture. The second was skin closure with a continuous suture. The main outcome measures were time, overall path length, and total number of movements. Kruskal-Wallis analysis was performed to evaluate statistical significance.
  
  
  RESULTS
  Highly significant differences were found during the skin closure task between all groups for mean time (P = .002), overall path length (P = .002), and number of movements (P = .001). For the deep stitch, highly significant differences were also found for time (P < .001), path length (P < .001), and number of movements (P < .001).
  
  
  CONCLUSIONS
  Motion analysis, using this technology, was able to differentiate between surgeons of varying experience performing oculoplastic tasks, thus demonstrating construct validity. This technique may be useful in the objective quantitative measurement of oculoplastic skill, with potential applications for training and research.
authors.affiliation: Frimley Park Hospital, University of Surrey, England. drgmsaleh@yahoo.co.uk
authors.forename: George M
authors.initials: GM
authors.lastname: Saleh
authors.forename: Vinod
authors.initials: V
authors.lastname: Gauba
authors.forename: Dawn
authors.initials: D
authors.lastname: Sim
authors.forename: Daniel
authors.initials: D
authors.lastname: Lindfield
authors.forename: Maedeh
authors.initials: M
authors.lastname: Borhani
authors.forename: Salim
authors.initials: S
authors.lastname: Ghoussayni
mesh_terms: D002983:Clinical Competence; D004521:Educational Measurement / Q000379:methods*; D006801:Humans; D009068:Movement / Q000502:physiology*; D013508:Ophthalmologic Surgical Procedures / Q000193:education*; D009885:Ophthalmology / Q000193:education*; D016544:Patient Simulation; D010781:Photography; D015397:Program Evaluation; D013536:Suture Techniques; D013647:Task Performance and Analysis