The purpose of the study is to analyze the outcomes of patients with coccygodynia (pain in and around the coccyx region) treated with coccygectomy (a procedure during which the coccyx is removed) and to report on the rate of complications of the procedure. The study will also aim to find pre-operative clinical predictors of good outcomes after coccygectomy. The investigators hypothesize that coccygectomy will not improve scores on the Short Form-36 (SF-36), Oswestry Disability Scale (ODI), tolerable sitting time, or Visual Analog Pain Scale (VAS). Also, the investigators hypothesize that there are no independent variables associated with improved outcomes.