Measuring first ray mobility with a new device

Glasoe, Ward M.; Yack, H. John; Saltzman, Charles L.

doi:10.1016/s0003-9993(99)90320-9

Cited by 43 publications

(50 citation statements)

References 7 publications

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“…Measures obtained by device and without stabilization of the second metatarsal may overestimate the amount of dorsal mobility specific to the first ray. 20 The second metatarsal is the most frequently fractured forefoot bone. 29,35 Eleven of the subjects we sampled fractured the second metatarsal.…”

Section: Discussionmentioning

confidence: 99%

“…[17][18][19] A manually operated screw mechanism on the device imposed a dorsiflexion force of 55 N to the head of the first metatarsal while simultaneous measures (in mm) of dorsal mobility were recorded. 20 A load imposed in this manner is tolerable for most subjects [17][18][19] and sufficient to cause displacement to the entire first ray navicular segment. 15 The measurement was repeated to assess reliability.…”

Section: Methodsmentioning

confidence: 99%

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Dorsal First Ray Mobility in Women Athletes With a History of Stress Fracture of the Second or Third Metatarsal

Glasoe¹,

Allen²,

Kepros³

et al. 2002

J Orthop Sports Phys Ther

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Study Design: Retrospective case-control study. Objective: To examine the amount of dorsal first ray mobility in subjects having a history of stress fracture of the second or third metatarsal as compared to control subjects, and to test the influence of navicular drop, length of the first ray, and generalized joint laxity on the measure of dorsal mobility. Background: Instability of the first ray may cause the lesser metatarsals to carry greater weight and contribute to the incidence of metatarsal stress fracture. Stability of the first ray is believed to be compromised when subtalar joint pronation continues into late stance, the first metatarsal is short, or an individual has generalized joint laxity. To date, no research has assessed the relationship of these etiological factors to the measure of first ray mobility. Methods and Measures: Fifteen women athletes having a history of a second or third metatarsal stress fracture were matched by age, body mass, and sport activity to women athletes without fracture. Dorsal first ray mobility was quantified by a device using a standard load of 55 N. Change in vertical height of the navicular during stance was the measure of foot pronation. Relative length of the first ray navicular segment compared to the length of the second ray navicular segment was measured by caliper. Generalized joint laxity was evaluated using the Beighton 9-point scale. Within-day repeated measures assessed reliability. Differences between groups were determined by independent t test. Multiple polynomial regression analysis assessed the relationship between dorsal mobility and navicular drop, length of the first ray, and joint laxity. Results: Interrater reliability coefficients ranged from 0.36 for metatarsal length to 0.71 for navicular drop. The intrarater reliability coefficient for dorsal first ray mobility was 0.93. Dorsal first ray mobility was not significantly different between the 2 groups. With regression analysis, the Beighton score was the only variable retained as a significant predictor of dorsal mobility (R 2 = 0.24). Conclusion: Results do not support the theory that describes the unstable first ray as a common cause of metatarsal stress fracture. In addition, this investigation found generalized joint laxity to be a significant predictor of dorsal first ray mobility.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Dorsal First Ray Mobility in Women Athletes With a History of Stress Fracture of the Second or Third Metatarsal

Glasoe¹,

Allen²,

Kepros³

et al. 2002

J Orthop Sports Phys Ther

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“…The device and protocol for testing are described elsewhere. [3][4][5][6][7][8] Measurements made with the device have been found to be reliable (ICCՆ 0.92; SEM Յ 0.35 mm), [3][4][5][6][7] and valid (ICC = 0.97), as judged by concurrent movement of the first ray as assessed with radiographs. 8 The device imposes a dorsiflexion force from beneath the first metatarsal head while measuring dorsal mobility of the first ray.…”

Section: Equipmentmentioning

confidence: 91%

“…12 A single examiner measured first ray dorsal mobility with the device (Figure 2). [3][4][5][6][7][8] The examiner (W.M.G.) operating the device was blinded from the results made with the rulers.…”

Section: Methodsmentioning

confidence: 99%

Criterion-Related Validity of a Clinical Measure of Dorsal First Ray Mobility

Glasoe¹,

Getsoian²,

Myers³

et al. 2005

J Orthop Sports Phys Ther

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Study Design: Test-retest methodological design using a sample of convenience. Objective: To determine the criterion-related validity and the reliability of measuring first ray mobility with a ruler. Background: Studies have questioned the accuracy of assessing first ray mobility by manual examination. Use of a ruler and adherence to strict guidelines in positioning of the patient may improve the measure. This study investigates the validity, and the intrarater and interrater reliability of measuring dorsal first ray mobility with a ruler while following recent recommendations to standardize the position of measurement. A valid and reliable mechanical device designed to measure first ray mobility was used as the validation criterion of measurement. Methods: Three clinicians performed ruler measurement of dorsal mobility on 14 subjects. A separate examiner measured dorsal mobility with the mechanical device. Intraclass correlation coefficients (ICCs) and standard error of measurements (SEMs) were computed to quantify the intrarater reliability of both testing procedures and the interrater reliability of the ruler measurement. ICCs of agreement were also computed to determine the concurrent validity of the ruler measurement for each clinician. Results: Mechanical device intrarater reliability ICC was 0.98 (SEM = 0.15 mm). Ruler intrarater ICCs were equal or less than -0.06 (SEMs = 1.1 mm); ruler interrater ICC was 0.05 (SEM = 1.2 mm). The ICCs of agreement between the mechanical device and ruler method ranged from -0.44 to 0.06. Minnesota, Mayo Mail Code 388, 420 Delaware St, Minneapolis, agreement between clinicianassessed ordinal-level hypomobile, normal, or hypermobile estimates of the first ray sagittal plane motion as compared to dorsal mobility measured by a mechanical device. Conclusion

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“…Based on a kinematic and kinetic perspective, the metatarsocuneiform joints and surrounding ligaments 22 allow limited motion (, 48 in the sagittal plane), 23,24 and instead, the joints function to stabilize the midfoot and to distribute load across the medial longitudinal arch. [22][23][24][25][26] As an alternative to measuring MPD on radiographs, this research employed a 3-D image acquisition and data analysis method for the purpose of studying the relative measurement of MPD in women with and without hallux valgus, and tested the null hypothesis of no group difference.…”

mentioning

confidence: 99%

An Imaged-Based Three-Dimensional Study of First Metatarsal Protrusion Distance in Women with and Without Hallux Valgus

Rodriguez

Pioske

Glasoe

2017

Journal of the American Podiatric Medical Association

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Background: First metatarsal protrusion distance (MPD) has been commonly studied as a characteristic of hallux valgus deformity. To date, the majority of investigations have used radiographic methods, with most reporting first metatarsal (ray) protrusion to be associated with deformity. As an alternative, this study used a three-dimensional (3-D) image acquisition and data analysis method to quantify MPD.

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Measuring first ray mobility with a new device

Cited by 43 publications

References 7 publications

Dorsal First Ray Mobility in Women Athletes With a History of Stress Fracture of the Second or Third Metatarsal

Dorsal First Ray Mobility in Women Athletes With a History of Stress Fracture of the Second or Third Metatarsal

Criterion-Related Validity of a Clinical Measure of Dorsal First Ray Mobility

An Imaged-Based Three-Dimensional Study of First Metatarsal Protrusion Distance in Women with and Without Hallux Valgus

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