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Pelvic Incidence as a Prognostic Factor in Coccydynia
Omer Ersen1, Ender Sir, Sami Eksert
1Gulhane Research and Education Hospital, Department of Orthopedics, Ankara, Turkey.
Higher pelvic incidence (PI) is linked to specific coccyx configurations and surgical treatment in coccydynia patients. This study explores PI as a prognostic factor for tailbone pain outcomes.
Area of Science:
- Spine Surgery
- Orthopedics
- Radiology
Background:
- Coccydynia, or tailbone pain, is a debilitating condition.
- The role of pelvic incidence (PI) in coccydynia is not well understood.
- Understanding spinopelvic parameters may offer insights into coccydynia etiology and treatment.
Purpose of the Study:
- To investigate the pelvic incidence (PI) in patients diagnosed with coccydynia.
- To determine if PI is a risk or prognostic factor for coccydynia.
- To compare PI in coccydynia patients with a healthy population and across different treatment groups.
Main Methods:
- Retrospective analysis of 110 coccydynia patients.
- Measurement of spinopelvic parameters using Surgimap software.
- Classification of coccyx position using the Postacchini system and comparison with healthy controls.
Main Results:
- Mean PI did not differ between coccydynia patients and the healthy population.
- Patients with type-3 and type-4 coccyx configurations (Postacchini classification) exhibited higher PI.
- 80% of patients undergoing surgery presented with type-3 or type-4 coccyx configurations.
Conclusions:
- This study is the first to examine PI in coccydynia patients.
- Higher PI is associated with specific coccyx malalignments (type-3 and type-4).
- Elevated PI may predict the need for surgical intervention in coccydynia cases.
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