Changes of spinopelvic parameters in different positions

Park, Soo-An; Kwak, Dai-Soon; Cho, Ho-Jung; Min, Dong-Uk

doi:10.1007/s00402-017-2757-0

Cited by 27 publications

(22 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Whole-body radiographs prior to surgery were taken of each participant, including frontal and left lateral images to cover the full spine and the hip joints ( 11 ). Hips and knees were fully extended in both frontal and left lateral direction ( 12 ).…”

Section: Methodsmentioning

confidence: 99%

Characteristics of sagittal spinopelvic alignment in asymptomatic Han Chinese adults

Zeng

Hai

et al. 2018

Exp Ther Med

View full text Add to dashboard Cite

The aim of the present study was to investigate patterns of spine sagittal alignment in asymptotic patients using radiological analysis. A number of studies focused on investigating normal patterns of spinal and pelvic alignment in Chinese populations, while few have evaluated Caucasian and other Asian populations. A total of 10 relevant pelvic and spinal parameters, including pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), lumbar lordosis (LL), cervical lordosis (CL), thoracic kyphosis (TK), sagittal vertical axis (SVA), lumbopelvic lordosis angle (PR-T12), spino-sacral angle (SSA) and sacral pelvic angle (SPA), were evaluated in asymptomatic Chinese adults from Beijing, aged 21–65 years. Correlations among these parameters, as well as between these parameters and age, and associations with gender and body mass index (BMI) were assessed using Pearson's correlation analysis. A total of 39 males and 46 females, aged 50.9±13.2 and 41.8±13.6 years, respectively, were enrolled in the present study. The results of PI, PT, SS, LL, TK, CL, SVA, PR-T12, SSA and SPA values suggested that age was positively correlated with TK, CL and SVA, while it was negatively correlated with LL, PR-T12 and SSA. SSA and SVA were revealed to differ significantly between sexes. It was also demonstrated that LL and TK may be associated with BMI. In conclusion, the results of the present study indicate that spinopelvic parameters in the asymptomatic Chinese Han population (in Beijing) are correlated with age and may be associated with individuals' ethnicity, sex and BMI. The results of the current study may provide a basis for the restoration of LL or similar diseases.

show abstract

Section: Methodsmentioning

confidence: 99%

Characteristics of sagittal spinopelvic alignment in asymptomatic Han Chinese adults

Zeng

Hai

et al. 2018

Exp Ther Med

View full text Add to dashboard Cite

show abstract

“…Park et al reported a slight difference in the parameters depending on posture and concluded that the majority of patients demonstrated decreased lumbar lordosis (LL) and CT-evaluated lumbopelvic parameters 4 increased sacral slope (SS) between standing and supine positions. 4 Chevillotte et al examined lumbopelvic parameters in standing and supine positions and reported the same results as Park et al 6 They proposed a possible explanation that a slight hyperextension of the hip in the supine position may increase SS. They also showed that correlations between LL and pelvic parameters were strongest in the supine position, concluding that spinal curves assessed in the supine position can be utilized in a clinical setting, especially when patients cannot maintain a standing position.…”

Section: Introductionmentioning

confidence: 69%

“…As already mentioned, it has been reported that LL decreases and SS increases in the supine position when compared with the standing position. 4,6 However, recent studies demonstrated that adult spinal deformity patients showed increased LL and SS in the supine position when compared with the standing position. 15,16 The difference in changes of LL and SS between healthy volunteers and adult spinal deformity patients provides an insight into the pathology of adult spinal deformity.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have recently used computed tomography (CT) in evaluating lumbopelvic parameters. [3][4][5] When evaluated using radiographs, lumbopelvic parameters are affected by the direction and distance between the patient and the radiographic system. After imaging, CT images can be reconstructed to sagittal and coronal planes, and the adjusted planes can be used for evaluation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Computed Tomographic Assessment of Age- and Gender-Specific Sagittal Lumbopelvic Alignment in a Japanese Population

Aoki

Inoue

Takahashi

et al. 2021

Spine Surg Relat Res

View full text Add to dashboard Cite

Introduction Previous studies have reported differences in lumbopelvic alignment between standing and supine positions. Computed tomography (CT) images taken in the supine position are often used for clinical studies in addition to standing radiographs, although not frequently. Our study aims to clarify normative values of CT-evaluated lumbopelvic parameters and the characteristics of age- and gender-related lumbopelvic alignment in the supine position. Methods Patients undergoing CT scans of abdominal or lumbar regions for reasons other than low back disorders were included (n=581). Sagittal multiplanar reconstruction CT images were obtained, and lumbar lordosis (LL), L5-S1 angle, and sacral slope (SS) were measured. Mean values of the parameters in patients aged 59 years and under, 60-69, 70-79, and 80 and over, and in males and females, were calculated. Age- and gender-related differences in these parameters were statistically analyzed. Results Among the four age groups, patients 80 years and over showed significantly lower LL and SS than patients aged 70-79. Females 80 years and over showed significantly lower LL and SS than all other age groups, but those in males did not. The comparison between males and females showed no significant differences in LL and SS; however, the L5-S1 angle was significantly higher in males than in females. In patients 80 years and over, females showed significantly lower LL and SS than in males. Conclusions This study provides normative CT-evaluated lumbopelvic parameters, such as LL, L5-S1 angle, and SS, which will be utilized for comparisons in future studies. The present study first revealed that pelvic retroversion and lumbar kyphosis occur in elderly females in the supine position, which raised a possibility that age-related decrease of LL and SS in females occurs at an older age in the supine position than in the standing position.

show abstract

“…A 3D model of each sacropelvic bone complex was reconstructed from the CT data using the Mimics (18R, Belgium) software [18, 20]. In the software, a sagittal image of the sacrum for the unilateral sacropelvic complex was made by combining three transparent images of the sacral articular surface of the SIJ, the sagittal trans-foraminal image to connect the centers of adjacent sacral foramens by the vertical and step-down lines from the corresponding upper endplate of S1 to the sacral end, and the mid-sagittal image bisecting the sacrum (Fig.…”

Section: Methodsmentioning

confidence: 99%

Technical variation of trans-articular sacroiliac joint (SIJ) fusion using three screws considering the effects of sacral dysplasia in patients with non-traumatic SIJ pain

Park

Kwak

Cho

2019

BMC Musculoskelet Disord

Self Cite

View full text Add to dashboard Cite

Background This study evaluated the technical adequacy of trans-articular sacroiliac joint (SIJ) fusion using three screws for non-traumatic SIJ pain, considering different grades of sacral dysplasia. Methods Cadaveric CT data of unilateral sacropelvic complexes for 72 individuals (53.4 ± 8.4 years) were selected. A 3D model was reformatted into the plain lateral radiograph to mark the articular surface of the SIJ. Subjects were classified into dysplastic (DYS) and non-dysplastic sacrum (NDS) groups. Proximal (PS), middle (MS), and distal screws (DS) with 10-mm diameter were virtually introduced to the iliac bone and the SIJ on the lateral image with a 5-mm safety margin. On a corresponding axial image, each screw was advanced vertically to the sagittal plane with the same safety margin. The entry points for each screw to the endplate of S1 (S2) and to the corresponding anterior sacral margin on the lateral image were measured, along with the maximal screw lengths on the axial image. Whether each screw passed through the SIJ was determined. Different types of sacral dysplasia and screws were compared statistically. Results Thirty-eight (26.4%) cases were DYS, and 106 (73.6%) were NDS. The entry points of all screws were significantly more distal in DYS than in NDS groups. The PS and MS screw lengths differed significantly between the 2 groups. Incidences of short sacral fixation (< 10 mm) were significantly higher for the DS in both NDS (38.7%) and DYS (39.5%) groups. Incidences of screw pass were lowest for the MS in both NDS (43.4%) and DYS (47.4%) groups. Conclusions Sacral dysplasia locates the SIJ more distally and therefore affects the entry point locations and screw lengths for all screws in trans-articular SIJ fusion, compared with a non-dysplastic sacrum. Moreover, three-screw fixation risks the development of unstable DS fixation and a high extra-articular fixation rate in MS.

show abstract

Changes of spinopelvic parameters in different positions

Cited by 27 publications

References 16 publications

Characteristics of sagittal spinopelvic alignment in asymptomatic Han Chinese adults

Characteristics of sagittal spinopelvic alignment in asymptomatic Han Chinese adults

Computed Tomographic Assessment of Age- and Gender-Specific Sagittal Lumbopelvic Alignment in a Japanese Population

Technical variation of trans-articular sacroiliac joint (SIJ) fusion using three screws considering the effects of sacral dysplasia in patients with non-traumatic SIJ pain

Contact Info

Product

Resources

About