Marmara University, Faculty of Medicine, Istanbul, Turkey.
Clin Exp Rheumatol. 2014 Mar-Apr;32(2):194-8. Epub 2014 Jan 24.
Coccydynia is defined as pain in or around the tail bone area. The most common cause of coccydynia is either a trauma such as a fall directly on to the coccyx or repetitive minor trauma. The etiology remains obscure in up to 30% of patients. The literature on the contribution of rheumatic diseases to coccydynia is scarce. Our objective was to investigate the prevalence of coccydynia in ankylosing spondylitis (AS) patients.
One hundred and seven consecutive patients with AS were evaluated for coccydynia were enrolled between January and November 2012 for a cross-sectional analysis. Seventy-four consecutive patients were followed for mechanical back pain as controls and the AS patients were interviewed for the presence of coccydynia. The data collected was evaluated on SPSS® version 11.5 and Microsoft Excel® Programmes.
Prevalence of coccydynia in AS (38.3%) was significantly higher than the control group (p<0.0001) in both female and male AS patients (female AS vs. control=40.9% vs. 18.4%, p=0.015 and male AS vs. control=36.5% vs. 8.0%, p=0.005). Both genders were affected equally in the AS group whereas coccydynia was slightly more frequent in female patients in the control group.
Coccydynia is a previously neglected symptom of AS and it is almost three times more common in AS than in non-specific chronic low back pain. Our observation may implicate that inflammatory diseases have a role in the etiology of coccydynia, especially in those without a history of recent or past trauma and coccydynia may be a factor associated with the severity of AS as well.
尾痛症是指尾骨区域或周围的疼痛。尾痛症最常见的原因是直接撞击尾骨的外伤或反复的轻微创伤。多达 30%的患者病因仍不清楚。风湿性疾病引起尾痛症的文献很少。我们的目的是研究强直性脊柱炎（AS）患者中尾痛症的患病率。
我们在 2012 年 1 月至 11 月期间，对 107 例连续的 AS 患者进行了尾痛症评估，进行了横断面分析。74 例连续的机械性背痛患者作为对照组，对 AS 患者进行了尾痛症的访谈。收集的数据在 SPSS®版本 11.5 和 Microsoft Excel®程序中进行了评估。
AS 患者中尾痛症的患病率（38.3%）明显高于对照组（p<0.0001），女性和男性 AS 患者均如此（女性 AS 与对照组=40.9%比 18.4%，p=0.015；男性 AS 与对照组=36.5%比 8.0%，p=0.005）。AS 组中两种性别均受影响，但对照组中女性患者的尾痛症略多。
尾痛症是 AS 以前被忽视的症状，它在 AS 中比在非特异性慢性下腰痛中常见近三倍。我们的观察结果可能表明炎症性疾病在尾痛症的病因中起作用，尤其是在那些没有近期或过去创伤史的患者中，尾痛症可能是与 AS 严重程度相关的因素之一。
