Proefschrift

Chapter 3 26 the two societies comprise 1293 members. In addition, we approached the surgeons through direct email at their hospital departments in the period of November 2013 – October 2014. The survey consisted of twelve questions, shown in Table 1.1. Statistical analysis Statistical analysis was performed using IBM SPSS Statistics, Version 21.0, Armonk, NY. Descriptive statistics were used to describe the demographic data and baseline characteristics of the entire survey. Results are presented as either mean ± standard deviation (SD) or as frequencies and percentages. Table 3.1 The questionnaire. 1) What is your discipline? 2) How long have you been a surgeon? 3) How often do you operate a tibial plateau fracture on yearly basis? 4) When do you start aftercare weight bearing in patients with tibial plateau fractures and with which weight bearing percentage? 5) Do you occasionally deviate from the standard postoperative protocol used in your clinic? 6) If you deviate from the standard protocol, on which factors is your decision based? 7) Which criteria do you use to determine earlier or delayed weight bearing? 8) How do you define 100% weight bearing? 9) How do you (gradually) increase postoperative weight bearing? 10) What kind of early complications do you see in patients with tibial plateau fractures in your clinic? 11) Are these complications related to early weight bearing? 12) Do you see yourself as a surgeon who is a more conservative or more progressive in the aftercare of tibial plateau fractures? Results Of the 111 surgeons who responded in the survey, 61 (55.0%) were orthopaedic surgeons and 50 (45.0%) were trauma surgeons. The overall response rate was 8.6% (i.e. 111/1293). Thirty-eight (34.2%) of the respondents were for 0-5 years surgeon, N=21 (19.0%) 5-15 years and N=52 (46.8%) more than 15 years surgeon. On yearly basis, N=44 (39.6%) operated less than 5 times a tibial plateau fracture, N=51 (46.0%) between 5-10 times and N=16 (14.4%) more than 10 times per year. Surgeons were asked when they started weight bearing after surgical treatment of tibial plateau fractures and with which weight bearing percentage. The results are shown in Figure 3.1: 11.7% of the respondents started immediately with weight bearing, 4.5% after 2 weeks, while the majority (55.9%) recommended starting weight bearing 6 weeks post-operatively. Only 15.3% recommended weight bearing after 12 weeks, i.e. in line with the AO guideline. Furthermore, 12.6% of the respondents

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