A novel system for the dynamic assessment of back shape

Taylor, William R.; Consmüller, Tobias; Rohlmann, A.

doi:10.1016/j.medengphy.2010.07.011

Cited by 48 publications

(24 citation statements)

References 9 publications

(12 reference statements)

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“…The device is a development of the former SpineDMS system, for which the validity and reliability has already been investigated [15].…”

Section: Measuring Systemmentioning

confidence: 99%

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Comparative evaluation of a novel measurement tool to assess lumbar spine posture and range of motion

Consmüller¹,

Rohlmann

Weinland³

et al. 2012

Eur Spine J

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Purpose The diagnosis of low back pain pathology is generally based upon invasive image-based assessment of structural pathology, but is limited in methods to evaluate function. The accurate and robust measurement of dynamic function may assist in the diagnosis and monitoring of therapy success. Epionics SPINE is an advanced straingauge measurement technology, based on the two sensor strips SpineDMS system, which allows the non-invasive assessment of lumbar and thoraco-lumbar motion for periods of up to 24 h. The aim of this study was to examine the reliability of Epionics SPINE and to collect and compare normative data for the characterisation of spinal motion in healthy subjects. Furthermore, the identification of parameters that influence lumbar range of motion (RoM) was targeted. Methods Spinal shape was measured using Epionics SPINE in 30 asymptomatic volunteers during upright standing, as well as maximum flexion and extension, to check intra-rater reliability. Furthermore, back shape was assessed throughout repeated maximum flexion and extension movements in 429 asymptomatic volunteers in order to collect normative data of the lordosis angle and RoM in different gender and age classes. Results The lordosis angle during standing in the healthy collective measured with Epionics SPINE was 32.4°± 9.7°. Relative to this standing position, the average maximum flexion angle was 50.8°± 10.9°and the average extension angle 25.0°± 11.5°. Comparisons with X-ray and Spinal Mouse data demonstrated good agreement in static positions. Age played a larger role than gender in influencing lumbar posture and RoM. Conclusions The Epionics SPINE system allows the practical and reliable dynamic assessment of lumbar spine shape and RoM, and may therefore provide a clinical solution for the evaluation of lower back pain as well as therapy monitoring.

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“…The device is a development of the former SpineDMS system, for which the validity and reliability has already been investigated [15].…”

Section: Measuring Systemmentioning

confidence: 99%

“…The novel measurement tool Epionics SPINE is an advancement of the former SpineDMS sensor strips [15], and allows the assessment of back shape using strain-gauge technology. Inbuilt accelerometers allow the additional detection of orientation of the upper body relative to the earth's gravitational field.…”

Section: Introductionmentioning

confidence: 99%

Comparative evaluation of a novel measurement tool to assess lumbar spine posture and range of motion

Consmüller¹,

Rohlmann

Weinland³

et al. 2012

Eur Spine J

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“…While motion of the lumbar spine is accessible using video fluoroscopy [2]–[4], the approach is highly invasive and exposes subjects to unnecessary X-ray radiation [4]. Moreover, while novel dynamic and non-invasive approaches now exist for assessing functional motion of the back, even over extended periods of time [5]–[8], the accuracy of such methods for evaluating the underlying skeletal kinematics remains unknown.…”

Section: Introductionmentioning

confidence: 99%

Soft Tissue Artefacts of the Human Back: Comparison of the Sagittal Curvature of the Spine Measured Using Skin Markers and an Open Upright MRI

et al. 2014

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Soft tissue artefact affects the determination of skeletal kinematics. Thus, it is important to know the accuracy and limitations of kinematic parameters determined and modelled based on skin marker data. Here, the curvature angles, as well as the rotations of the lumbar and thoracic segments, of seven healthy subjects were determined in the sagittal plane using a skin marker set and compared to measurements taken in an open upright MRI scanner in order to understand the influence of soft tissue artefact at the back. The mean STA in the flexed compared to the extended positions were 10.2±6.1 mm (lumbar)/9.3±4.2 mm (thoracic) and 10.7±4.8 mm (lumbar)/9.2±4.9 mm (thoracic) respectively. A linear regression of the lumbar and thoracic curvatures between the marker-based measurements and MRI-based measurements resulted in coefficients of determination, R2, of 0.552 and 0.385 respectively. Skin marker measurements therefore allow for the assessment of changes in the lumbar and thoracic curvature angles, but the absolute values suffer from uncertainty. Nevertheless, this marker set appears to be suitable for quantifying lumbar and thoracic spinal changes between quasi-static whole body postural changes.

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“…The measurement tool Epionics SPINE is an advancement of the former SpineDMS system [18], and allows the dynamic assessment of the shape of the thoracolumbar spine in a rapid and subject specific manner based on strain gauge technology. While age, gender and body-height dependent normative data for back shape and RoM have been determined for this device, no repository of normative data exists for the maximum velocities of lumbar spine movements in the sagittal plane, i.e.…”

Section: Introductionmentioning

confidence: 99%

Velocity of Lordosis Angle during Spinal Flexion and Extension

Consmüller¹,

Rohlmann

Weinland³

et al. 2012

PLoS ONE

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The importance of functional parameters for evaluating the severity of low back pain is gaining clinical recognition, with evidence suggesting that the angular velocity of lordosis is critical for identification of musculoskeletal deficits. However, there is a lack of data regarding the range of functional kinematics (RoKs), particularly which include the changing shape and curvature of the spine. We address this deficit by characterising the angular velocity of lordosis throughout the thoracolumbar spine according to age and gender. The velocity of lumbar back shape changes was measured using Epionics SPINE during maximum flexion and extension activities in 429 asymptomatic volunteers. The difference between maximum positive and negative velocities represented the RoKs. The mean RoKs for flexion decreased with age; 114°/s (20–35 years), 100°/s (36–50 years) and 83°/s (51–75 years). For extension, the corresponding mean RoKs were 73°/s, 57°/s and 47°/s. ANCOVA analyses revealed that age and gender had the largest influence on the RoKs (p<0.05). The Epionics SPINE system allows the rapid assessment of functional kinematics in the lumbar spine. The results of this study now serve as normative data for comparison to patients with spinal pathology or after surgical treatment.

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A novel system for the dynamic assessment of back shape

Cited by 48 publications

References 9 publications

Comparative evaluation of a novel measurement tool to assess lumbar spine posture and range of motion

Comparative evaluation of a novel measurement tool to assess lumbar spine posture and range of motion

Soft Tissue Artefacts of the Human Back: Comparison of the Sagittal Curvature of the Spine Measured Using Skin Markers and an Open Upright MRI

Velocity of Lordosis Angle during Spinal Flexion and Extension

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