Coccydynia and Pelvic Floor Spasm Pain while sitting is a common client complaint, but massage therapists often disregard the coccyx as a possible pain generator. This is due to a lack of biomechanical knowledge about the coccyx, as well as concerns about how to safely assess and treat this structure. When seated, the coccyx and bilateral ischial tuberosities form an elegant weight-bearing tripod. Although the coccyx bears minimal weight when sitting — about 10 percent like the fibula — it can b