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Updated: Jun 5, 2026

Use of a Foot-Induced Digitally Controlled Resistance Device for Functional Magnetic Resonance Imaging Evaluation in Patients with Foot Paresis

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First ray mobility increase in patients with metatarsalgia.

Justin Greisberg¹, Daniel Prince, Lisa Sperber

¹Dept of Orthopaedics, New York, NY 10032, USA. justingreisberg@hotmail.com

Foot & Ankle International

|December 30, 2010

Summary

This summary is machine-generated.

First metatarsal hypermobility, a cause of transfer metatarsalgia, can now be reliably measured. Patients with metatarsalgia exhibit significantly greater dynamic first metatarsal elevation, indicating a potential load transfer mechanism.

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Area of Science:

Orthopedics
Biomechanics
Podiatry

Background:

Quantifying first metatarsal hypermobility's link to transfer metatarsalgia has been challenging.
First metatarsal hypermobility may contribute to abnormal load distribution in the foot.
Understanding this relationship is crucial for developing effective treatment strategies.

Purpose of the Study:

To evaluate a simple device for measuring dynamic first metatarsal elevation.
To determine if dynamic first metatarsal elevation is associated with transfer metatarsalgia.
To assess the reliability of the measurement device.

Main Methods:

A prospective study involving 352 patients.
Measurements of dynamic metatarsal elevation were taken.
Included 64 patients with transfer metatarsalgia and 288 without symptoms.

Main Results:

Patients with metatarsalgia showed significantly greater first ray mobility (9 mm vs. 7 mm).
Significantly greater dynamic metatarsal elevation was observed in symptomatic patients (5 mm vs. 3 mm).
The measurement device demonstrated high intraobserver and interobserver reliability.

Conclusions:

A simple device reliably measures dynamic first metatarsal elevation.
Higher dynamic metatarsal elevation is associated with transfer metatarsalgia.
This suggests a biomechanical mechanism involving abnormal load transfer to lesser metatarsals.