Three-dimensional evaluation of the coccyx movement between supine and standing positions using conventional and upright computed tomography imaging

Yagi, Fumiko; Yamada, Yoshitake; Yamada, Minoru; Yokoyama, Yoichi; Mukai, Kiyoko; Nakahara, Takehiro; Narita, Kentaro; Jinzaki, Masahiro

doi:10.1038/s41598-021-86312-0

Cited by 4 publications

(2 citation statements)

References 22 publications

(15 reference statements)

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“…The migration length of the tip of the coccyx is moderately correlated with BMI. These study results may provide important clues regarding the pathogenesis of coccydynia and pelvic floor dysfunction [25] morphologic and morphometric parameters via MRI, determining that Type II morphologic coccyx, subluxation of the ICJ, and the presence of bony spicules are more common in patients with idiopathic coccydynia. Additionally, the sacral angle and sacrococcygeal curvature index are lower, while the sacrococcygeal curve length is higher in patients with coccydynia [26].…”

Section: Radiologic Assessmentmentioning

confidence: 88%

Imaging findings and treatment in coccydynia – update of the recent study findings

Sukun,

Cankurtaran,

Agildere

et al. 2023

Rofo

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Background Coccydynia is one of the most overlooked symptoms in clinical practice. The diagnosis and radiologic findings of traumatic coccyx can be more easily detected unless it is delayed and postponed. For idiopathic coccydynia, which accounts for one third of cases, patients present with long-standing pain and multiple physician visits. Method The keywords coccyx, coccydynia, coccygodynia were searched in PubMed, Embase, Scopus databases in the last 5 years. Research articles, reviews and case reports were analyzed. The studies conducted in the last 5 years were presented under the headings of etiology, radiologic assessment, interventional and surgical treatments. Results and Conclusion The first step is dynamic X-ray of the coccyx in standing and sitting position. In this way, morphologic parameters and hypermobility causing idiopathic coccydynia can be evaluated. Morphologic and morphometric features of the coccyx described in previous CT and MR studies have explained the relationship with coccydynia. The key features are as follows: Type II coccyx morphology, subluxation of the intercoccygeal joint, presence of bony spicules. Knowledge of these definitions as well as the differential diagnosis in this anatomical region will help in reaching the correct diagnosis. The treatment of coccydynia is stepwise like the diagnosis. Conservative treatments are initiated first. Manipulations, ganglion impar block, injections, radiofrequency and shock treatments and finally coccygectomy are treatment methods reported. Radiologists should not overlook this region and should be familiar with the coccyx’s morphologic appearance and the sacrococcygeal region’s differential diagnosis. Key points:

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Section: Radiologic Assessmentmentioning

confidence: 88%

Imaging findings and treatment in coccydynia – update of the recent study findings

Sukun,

Cankurtaran,

Agildere

et al. 2023

Rofo

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“…(b) presence of any symptoms such as dysuria; (c) surgical history or undergoing treatment; and (d) pregnancy or possible pregnancy. The data for the 32 enrolled volunteers had been analyzed for different purposes in previous studies that evaluated the vena cava, aorta, and pelvic floor (Jinzaki et al, 2020) and lung volume (Yamada, Yamada, Yokoyama, et al, 2020b), the brain (Yokoyama et al, 2021), and the coccyx (Yagi et al, 2021), but the airways had not been evaluated.…”

Section: Subjectsmentioning

confidence: 99%

Difference in the airway luminal area between the standing and supine positions using upright and conventional computed tomography

Matsumoto

Yamada

et al. 2021

Clinical Anatomy

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No clinical studies to date have compared the airway luminal area between supine and standing positions. Our aim was therefore to compare the airway luminal area between these two positions on computed tomography (CT) and to determine its correlation with forced expiratory volume in 1 s (FEV1). Thirty-two asymptomatic volunteers underwent both conventional (supine position) and upright (standing position) CT during deep inspiration breath-holding. Pulmonary function tests were conducted on the same day. We measured the airway luminal area on CT in each position. Paired t-tests and Pearson's correlation coefficients were used for statistical analysis. The average luminal areas of the trachea, right and left main bronchi, and average third-generation airway were greater in the standing than the supine position by 3.4%, 6.1%, 5.5%, and 5.2%, respectively. The correlation coefficients between airway luminal areas and FEV1 tended to be higher in the standing than the supine position; this correlation was highest for the average third-generation airway (r = 0.70, P < 0.0001). The airway luminal areas of the trachea, bilateral main bronchi, and average third-generation airway were greater in the standing than the supine position. The average third-generation airway area in the standing position had the highest correlation with FEV1.

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The overlooked symptom of coccydynia: evaluation of sacrococcygeal morphologic and morphometric findings

Sukun,

Cubuk,

Cankurtaran

et al. 2023

Radiologie

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Three-dimensional evaluation of the coccyx movement between supine and standing positions using conventional and upright computed tomography imaging

Cited by 4 publications

References 22 publications

Imaging findings and treatment in coccydynia – update of the recent study findings

Imaging findings and treatment in coccydynia – update of the recent study findings

Difference in the airway luminal area between the standing and supine positions using upright and conventional computed tomography

The overlooked symptom of coccydynia: evaluation of sacrococcygeal morphologic and morphometric findings

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