NCT02701192

Brief Summary

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.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
100

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Sep 2007

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

September 1, 2007

Completed
8.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2015

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

February 11, 2016

Completed
26 days until next milestone

First Posted

Study publicly available on registry

March 8, 2016

Completed
7 months until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2016

Completed
4.7 years until next milestone

Results Posted

Study results publicly available

June 14, 2021

Completed
Last Updated

April 22, 2022

Status Verified

June 1, 2021

Enrollment Period

8.3 years

First QC Date

February 11, 2016

Results QC Date

January 24, 2018

Last Update Submit

April 20, 2022

Conditions

Keywords

coccygodyniacoccygectomycoccyx

Outcome Measures

Primary Outcomes (11)

  • Pain Change From Baseline at 2 Years

    Patients will complete the100mm Visual Analog Scale (VAS) at Baseline and 2 years after procedure. Patient will be instructed to indicate pain intensity by marking a 100mm line where one end, 0 indicates no pain and 100 indicates extreme pain on the other end.

    Baseline,1 year and 2 years

  • Patient Health Status- SF-36v2:Physical Functioning

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Patient Health Status- SF-36v2: Role Functioning-Physical

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Patient Health Status-SF-36v2: Role Functioning- Emotional

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Patient Health Status-SF-36v2: Energy/Fatigue

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Patient Health Status-SF-36v2: Emotional Well-being

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Patient Health Status-SF-36v2: Social Functioning

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Patient Health Status-SF-36v2: Pain

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Patient Health Status-SF-36v2: General Health

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Patient Health Status-SF-36v2: Health Change

    The SF-36 is on a 0-100 scale, with higher scores indicating a more favorable/better health state.

    Baseline,1 year and 2 years

  • Lower Back Disability

    Oswestry Disability Index used to measure a patient's permanent functional disability. Scores range from 0 to 100. scores between 0 and 20 described as "minimal disability", scores between 21and 40 described as "moderate disability",scores between 41and 60 described as "severe disability",scores between 61 and 80 described as "crippled" and scores between 81 and 100 described as " bed bounded"

    Baseline,1 year and 2 years

Secondary Outcomes (2)

  • Complication Rates

    Baseline,1 year and 2 years

  • Treatment Success

    Baseline,1 year and 2 years

Study Arms (1)

Coccygectomy Treatment

Patients undergoing coccygectomy surgical procedure.

Other: Coccygectomy

Interventions

Patient receiving coccygectomy surgery.

Coccygectomy Treatment

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

All patients will be seen and enrolled through an outpatient spine specialty clinic of Dr. Edward Hanley.

You may qualify if:

  • Pain in the region of the coccyx
  • Pain for greater than 2 months
  • Tenderness to palpation over coccyx
  • Radiographic abnormalities of the coccyx
  • Hypermobility of greater than 25 degrees, posterior subluxation of a mobile segment, or a coccygeal spicule on sitting radiographs
  • post-traumatic coccygodynia
  • Failure of conservative treatment methods: 4 weeks of NSAIDS, seat cushion, and rest
  • Partial coccygectomy

You may not qualify if:

  • Coexisting low back pain
  • Total previous coccyx surgery or previous lumbar fashion
  • Under 18 years of age

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Carolinas Medical Center, Department of Orthopaedic Surgery

Charlotte, North Carolina, 28204, United States

Location

Results Point of Contact

Title
Rachel Seymour, PhD
Organization
Carolinas Healthcare System

Study Officials

  • Edward N Hanley, MD

    Carolinas Medical Center, Department of Orthopaedic Surgery

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 11, 2016

First Posted

March 8, 2016

Study Start

September 1, 2007

Primary Completion

December 1, 2015

Study Completion

October 1, 2016

Last Updated

April 22, 2022

Results First Posted

June 14, 2021

Record last verified: 2021-06

Locations