A Radiostereometric Analysis of the Movements of the Sacroiliac Joints in the Reciprocal Straddle Position

Sturesson, Bengt; Udén, Alf; Vleeming, Andry

doi:10.1097/00007632-200001150-00012

Cited by 107 publications

(80 citation statements)

References 10 publications

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“…RSA as a tool to measure 3-D movement in the SI joint has been used in a limited number of studies [16][17][18][19][20], but none of these has assessed the accuracy and precision of the method in an experimental setting, as in the current study. We therefore (1) measured the accuracy, precision, and CNs of pelvic RSA with different marker distributions in a phantom model, (2) explored whether frontal markers around the symphysis improve the CN and precision and whether it is possible to avoid markers in the cranial part of the sacrum, and (3) compared the precision obtained by a phantom with the precision obtained by double examinations in patients.…”

Section: Discussionmentioning

confidence: 99%

“…Different radiographic modalities have been used to measure movement in the sacroiliac (SI) joint objectively [7,12,15], whereas five studies have used RSA to evaluate movement between the sacrum and the ilium [16][17][18][19][20]. With RSA, a maximum rotation of 3.6°has been measured and the translation never exceeded 2 mm in the SI joint, which is less movement than other methods have revealed [5], and for this reason the method has been questioned [3].…”

Section: Introductionmentioning

confidence: 99%

“…Earlier studies have measured movement between the sacrum and the ilium with dorsally placed markers [16][17][18][19][20]. In these studies, the markers were placed close to the joint line, and because of the flat anatomy of the bones, the markers become collinear (in the same plane).…”

Section: Introductionmentioning

confidence: 99%

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Precision and Accuracy Measurement of Radiostereometric Analysis Applied to Movement of the Sacroiliac Joint

Kibsgård

Røise

Stuge

et al. 2012

Clinical Orthopaedics &Amp; Related Research

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Background Different techniques have been used to quantify the movement of sacroiliac (SI) joints. These include radiostereometric analysis (RSA), but the accuracy and precision of this method have not been properly evaluated and it is unclear how many markers are required and where they should be placed to achieve proper accuracy and precision. Purpose The purpose of this study was to test accuracy and precision of RSA, applied to the SI joint, in a phantom model and in patients. Methods We used a plastic phantom attached to a micrometer to obtain a true value of the movement of the SI joint and compared this value with the measured value obtained by RSA; the difference represented the accuracy. The precision of the system was measured by double examination in the phantom and in six patients, and was expressed by a limit of significance (LOS). We analyzed different marker distributions to find optimal marker placement and number of markers needed. Results The accuracy was high and we identified no systematic errors. The precision of the phantom was high with a LOS less than 0.25°and 0.16 mm for all directions, and in patients, the precision was less than 0.71°for rotations and 0.47 mm translations. No markers were needed in the pubic symphysis to obtain good precision. Conclusions The accuracy and precision are high when RSA is used to measure movement in the SI joint and support the use of RSA in research of SI joint motion.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Precision and Accuracy Measurement of Radiostereometric Analysis Applied to Movement of the Sacroiliac Joint

Kibsgård

Røise

Stuge

et al. 2012

Clinical Orthopaedics &Amp; Related Research

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“…We believe that the SIJ is unlikely to be important because accurate measurement of its mobility by radiostereometric analysis (RSA) [24] shows that the standard deviations associated with movements at this joint are higher than the measurements themselves, i.e. there is no measurable movement.…”

Section: Spinal Mechanicsmentioning

confidence: 99%

Lower limb involvement in spinal function and low back pain

McGregor

Hukins

2009

BMR

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Abstract.Aim: To evaluate evidence for involvement of the lower limb in spinal function and low back pain (LBP). Design:A hypothesis based on a critical review of the relevant biomechanical and clinical literature. Results:The spine resembles an inverted pendulum that supports the weight of the upper body; its stability requires a moving base that is provided by the joints of the lower limb, especially the hip. However, the sacroiliac joints are

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“…These are very large numbers relative to some very conservative contemporary estimates of sacroiliac mobility, such as those of Sturesson et al [31][32][33] and those appearing in a review article by Goode et al 34 However, the 1.5 in of artificial LLI created by Pitkin and Pheasant is also very large compared with the amount of LLI produced or found in other studies herein reviewed, some of which showed a linear, monotonic dose response of pelvic torsion to induced LLI. Moreover, the mean amount of torsion reported by them is within shouting distance of other modern investigators who have reported far more torsion to occur, such as a clinical study by Cibulka et al, 35 a cadaveric study using advanced imaging by Smidt et al, 36 another clinical study by Smidt et al, 37 and the Drerup and Hierholzer 20 study included in this review.…”

Section: Study Observationsmentioning

confidence: 94%

The relationship between pelvic torsion and anatomical leg length inequality: a review of the literature

Cooperstein

Lew

2009

Journal of Chiropractic Medicine

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Objective: Although it is common to find assertions relating functional leg length inequality (LLI) to pelvic torsion and other states of subluxation, comments and/or data concerning anatomical LLI in this same context are uncommon. This review of the literature synthesizes the evidence on pelvic torsion in relation to anatomical LLI. Methods: The literature was searched using the PubMed; Manual, Alternative, and Natural Therapy Index System; Allied and Complementary Medicine Database; Cumulative Index to Nursing and Allied Health Literature; and Index to Chiropractic Literature databases for primary studies that related LLI, either artificially created or naturally occurring, to pelvic torsion. Extracted data included natural vs artificial LLI, method of creating or detecting LLI, subject selection, methodology for measuring pelvic torsion, and results. Results: Nine English-language studies were retrieved published 1936-2004. Seven determined the impact of artificial, transient LLI on pelvic torsion, whereas 2 studied the effect of naturally occurring LLI. Conclusion: Across varying methodologies for measuring LLI and pelvic torsion, a consistent, dose-related pattern was identified in which the innominate rotates anteriorly on the side of a shorter leg and posteriorly on the side of the longer leg. This finding was contrary to the common assertion that the ilium rotates posteriorly on the side of a short leg and vice versa. Practitioners of manual medicine who derive vectors for intervention based on leg checking procedures should consider the possibility that the direction of pelvic torsion may be variable depending on whether the LLI is of anatomical or functional origin.

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A Radiostereometric Analysis of the Movements of the Sacroiliac Joints in the Reciprocal Straddle Position

Abstract: It was possible to demonstrate reciprocal movements of the sacroiliac joints in the straddle position. However, the radiostereometric analysis technique showed the movements to be small, as reported in other mobility studies.

Cited by 107 publications

References 10 publications

Precision and Accuracy Measurement of Radiostereometric Analysis Applied to Movement of the Sacroiliac Joint

Precision and Accuracy Measurement of Radiostereometric Analysis Applied to Movement of the Sacroiliac Joint

Lower limb involvement in spinal function and low back pain

The relationship between pelvic torsion and anatomical leg length inequality: a review of the literature

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