PMID- 27037436 OWN - NLM STAT- MEDLINE DCOM- 20160830 LR - 20160402 IS - 2049-4408 (Electronic) IS - 2049-4394 (Linking) VI - 98-B IP - 4 DP - 2016 Apr TI - Coccygectomy for patients with chronic coccydynia: a prospective, observational study of 98 patients. PG - 526-33 LID - 10.1302/0301-620X.98B4.36641 [doi] AB - AIMS: The purpose of this prospective study was to evaluate the outcomes of coccygectomy for patients with chronic coccydynia. PATIENTS AND METHODS: Between 2007 and 2011, 98 patients underwent coccygectomy for chronic coccydynia. The patients were aged > 18 years, had coccygeal pain, local tenderness and a radiological abnormality, and had failed conservative management. Outcome measures were the Short Form 36 (SF-36), the Oswestry Disability Index (ODI) and a visual analogue scale (VAS) for pain. Secondary analysis compared the pre-operative features and the outcomes of patients with successful and failed treatment, two years post-operatively. The threshold for success was based on a minimum clinically important difference (MCID) on the ODI of 20 points. All other patients, including those lost to follow-up, were classified as failures. RESULTS: There was significant improvement in all ten components of the SF-36 (p < 0.05), the ODI (23 points) and VAS (39 points) (p < 0.0001). A total of 69 patients (70.4%) met the designated MCID threshold for a successful outcome. The failure group consisted of 25 patients (25.5%) who did not reach the MCID and four (4.1%) who were lost to follow-up. Six patients (6.1%) in the failure group had ODI scores that were no better or worse than that pre-operatively. The patients in whom treatment failed had significantly worse pre-operative scores for the ODI (p = 0.04), VAS (p = 0.02) and on five of ten SF-36 components (p < 0.04). They also had a higher incidence of psychiatric disorders, pre-operative opiate use and more than three comorbidities. TAKE HOME MESSAGE: Coccygectomy for chronic coccydynia results in significant improvement in patient-reported outcomes at two years. Failure is associated with certain pre-operative characteristics such as psychiatric illness, poor quality of life features, higher levels of pain, and use of opiates. CI - (c)2016 The British Editorial Society of Bone & Joint Surgery. FAU - Hanley, E N AU - Hanley EN AD - Carolinas Medical Center, 1025 Morehead Medical Drive, Suite 300 Charlotte, NC 28204, USA. FAU - Ode, G AU - Ode G AD - Carolinas Medical Center, 1025 Morehead Medical Drive, Suite 300 Charlotte, NC 28204, USA. FAU - Jackson Iii, B J AU - Jackson Iii BJ AD - University of South Carolina, 2 Medical Park, Columbia, SC 29203, USA. FAU - Seymour, R AU - Seymour R AD - Carolinas Medical Center, 1025 Morehead Medical Drive, Suite 300 Charlotte, NC 28204, USA. LA - eng PT - Journal Article PT - Observational Study PL - England TA - Bone Joint J JT - The bone & joint journal JID - 101599229 SB - IM MH - Adult MH - Aged MH - Back Pain/rehabilitation/*surgery MH - Chronic Disease MH - *Disability Evaluation MH - Female MH - Humans MH - Lumbar Vertebrae MH - Male MH - Middle Aged MH - Pain Measurement MH - Patient Satisfaction MH - Prospective Studies MH - Quality of Life MH - Sacrococcygeal Region MH - Spinal Fusion/*adverse effects MH - Treatment Outcome MH - Young Adult OTO - NOTNLM OT - Coccydynia; coccygectomy; coccyx; sacrococcygeal injection EDAT- 2016/04/03 06:00 MHDA- 2016/08/31 06:00 CRDT- 2016/04/03 06:00 PHST- 2015/06/04 00:00 [received] PHST- 2015/11/02 00:00 [accepted] PHST- 2016/04/03 06:00 [entrez] PHST- 2016/04/03 06:00 [pubmed] PHST- 2016/08/31 06:00 [medline] AID - 98-B/4/526 [pii] AID - 10.1302/0301-620X.98B4.36641 [doi] PST - ppublish SO - Bone Joint J. 2016 Apr;98-B(4):526-33. doi: 10.1302/0301-620X.98B4.36641.