Chapter 7 90 Primary outcome measures After a 26 week post-surgery follow-up, the overall response rate for the patientspecific outcome measures at all measurement points was 99.8% (N=1 patient refused to fill out the patient self-perceived outcome questionnaires at week 26). ADL as measured with the LEFS, and quality of life as measured with the SF-12, were both significantly better in the PWB group compared to the RWB group (p<0.01) (Appendix 7.1). There were no differences in pain score between the PWB and RWB groups (Appendix 7.2). The patient self-perceived outcome levels regarding ADL and quality of life in the PWB and RWB groups are summarized in Figures 7.2 and 7.3. Figure 7.2 Unadjusted patient self-perceived activities of daily living during a 26-week post-surgery followup. ADL, Activities of Daily Living; LEFS, Lower Extremity Functional Scale; PWB, permissive weight bearing; RWB, restricted weight bearing. Figure 7.3 Unadjusted patient self-perceived quality of life during a 26-week post-surgery follow-up. PWB, permissive weight bearing; RWB, restricted weight bearing.