Radiological severity of hip osteoarthritis in patients with adult spinal deformity: the effect on spinopelvic and lower extremity compensatory mechanisms

Day, Louis M.; DelSole, Edward M.; Beaubrun, Bryan M.; Zhou, Peter L.; Moon, John Y.; Tishelman, Jared C.; Vigdorchik, Jonathan M.; Schwarzkopf, Ran; Lafage, Renaud; Lafage, Virginie; Protopsaltis, Themistocles S.; Buckland, Aaron J.

doi:10.1007/s00586-018-5509-0

Cited by 34 publications

(35 citation statements)

References 40 publications

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“…A clinical study by Day et al showed a positive relationship between the sagittal spinal balance and severity of hip OA [10]. In particular, SVA and T1-Spi were higher in the severe OA group than in the limited OA group.…”

Section: Discussionmentioning

confidence: 94%

“…We used population values and the sigma of the previous study and calculated the sample size with a probability of 0.05, effect size of 0.5, and power of 0.8. The analysis revealed that a minimum sample size of 44 was required for the study, so a total sample size of 47 cases was considered reasonable [10]. Third, this study did not consider lower extremity parameters and the morphology of the femur.…”

Section: Discussionmentioning

confidence: 99%

“…Pathology of the hip and its relation to the sagittal spinal and spinopelvic alignment has been widely analysed [5][6][7][8][9]. Recently, Day et al examined the relationship between the severity of hip OA and sagittal spine deformity using standing full-body stereoradiography (EOS Imaging, Paris, France) [10]. This study showed that Electronic supplementary material The online version of this article (doi:https ://doi.org/10.1007/s0058 6-020-06664 -5) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

“…This study suggested that the contact area of the hip and sagittal alignment may predispose patients to FAI and early hip OA; however, CT images were obtained in the supine position, which limited the analysis of the spinal and spinopelvic alignment. Moreover, previous studies have analysed the relationship between sagittal spinal alignment and hip pathologies in the standing position using two-dimensional (2D) radiography or full-body EOS [5,6,8,10,19]; however, the analysis of the three-dimensional (3D) distance of the hip joint space was not available, given the 2D analysis and the model were based on the skeletal morphology in the EOS system [20].…”

Section: Introductionmentioning

confidence: 99%

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Relationship between hip joint proximity area and sagittal balance parameters: an upright computed tomography study

et al. 2020

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Purpose A close relationship between sagittal spinal alignment and hip osteoarthritis (OA) has been documented. This study aimed to examine the relationship between hip joint proximity area and sagittal balance parameters in healthy subjects. Methods This prospective study enrolled 47 healthy volunteers who underwent 320-detector row upright computed tomography. Acquired data were reconstructed in a virtual three-dimensional space. The proximity area was determined by < 1 mm of the Hausdorff distance between the acetabulum and the femoral head. Volunteers were divided into the anterior and posterior proximity groups depending on the position of the closest area. Sagittal balance parameters [sagittal vertical axis (SVA), T1 spinopelvic inclination (T1-SPi), T1-pelvic angle, pelvic tilt, sacral slope, pelvic incidence, lumbar lordosis, thoracic kyphosis), offset distance between the centre of the acoustic meati (CAM) and C7 plumb line (CAM-C7-offset), and offset distance between the CAM and hip axis (HA) (CAM-HA-offset)] were compared between the two groups using independent sample t test. Results The anterior proximity group (n = 24) had higher SVA (p = 0.016) and T1-Spi (p = 0.015) than the posterior proximity group (n = 23). CAM-HA-offset was higher in the posterior than in the anterior proximity group (p < 0.000). There was no difference in other parameters (p > 0.05). Conclusion The anterior proximity group had a positive anterior spinal balance; the posterior proximity group may have a more posterior gravity line than the hip joint centre. The anterior spinal balance may contribute to the anterior loading of the hip joint, with known relation with the initiation and onset of hip OA.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relationship between hip joint proximity area and sagittal balance parameters: an upright computed tomography study

et al. 2020

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“…Owing to the coordinated nature of spinopelvic motions, a limit in motion on one spine segment tends to increase mobility in other spine segments and in pelvic tilt to maintain spinopelvic "balance" [1]. Spine diseases, including degenerative disc disease (DDD), degenerative spondylolisthesis, and lumbar fusion, have been associated with abnormal spinopelvic alignment and mobility [9,11,12].…”

Section: Conflict Of Interestsmentioning

confidence: 99%

Obesity Alters Spinopelvic Alignment Changes From Standing to Relaxed Sitting: the Influence of the Soft-tissue Envelope

et al. 2020

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Background: Changes in spinopelvic and lower extremity alignment between standing and relaxed sitting have important clinical implications with regard to stability of total hip arthroplasty. This study aimed to analyze the effect of body mass index (BMI) on lumbopelvic alignment and motion at the hip joint. Methods: A retrospective review of patients who underwent full-body stereoradiographs in standing and relaxed sitting for total hip arthroplasty planning was conducted. Spinopelvic parameters measured included spinopelvic tilt (SPT), pelvic incidence (PI), lumbar lordosis (LL), PI minus LL (PI-LL), proximal femoral shaft angle (PFSA), and standing-to-sitting hip range of motion. Propensity score matching controlled for age, gender, PI, and hip ostoarthritis grade. Patients were stratified into normal (NORMAL; BMI, 18.5-24.9), overweight (OW; 25.0-29.9), and obese (OB; 30.0-34.9) groups. Alignment parameters were compared using one-way analysis of variance. Results: There were 84 patients in each group after propensity score matching. Standing alignment between BMI groups was similar for all parameters (P > .05) except for PFSA (P < .001). Significant differences were noted for sitting alignment between patients who are NORMAL, OW, and OB in: SPT (P ¼ .007), PILL (P ¼ .018), and LL (P ¼ .029). PFSA between groups was not significantly different (P > .05). Significant differences were found for sitting-to-standing alignment across groups in PFSA change (P < .001), SPT change (P ¼ .006), PILL change (P ¼ .005), LL change (P ¼ .037), and hip flexion (P < .001). Conclusions: Significant differences in sitting and standing-to-sitting change in lumbopelvic alignment based on BMI suggest obese patients recruit more posterior spinopelvic tilt when sitting to compensate for soft-tissue impingement that occurs anterior to the hip joint and limiting hip flexion.

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Radiological severity of hip osteoarthritis in patients with adult spinal deformity: the effect on spinopelvic and lower extremity compensatory mechanisms

Cited by 34 publications

References 40 publications

Relationship between hip joint proximity area and sagittal balance parameters: an upright computed tomography study

Relationship between hip joint proximity area and sagittal balance parameters: an upright computed tomography study

Obesity Alters Spinopelvic Alignment Changes From Standing to Relaxed Sitting: the Influence of the Soft-tissue Envelope

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