New Innovative Device to Measure Ankle Joint Dorsiflexion

NewsBot · Oct 21, 2016

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The Design, Development, and Reliability Testing of a New Innovative Device to Measure Ankle Joint Dorsiflexion.
James Charles
Journal of the American Podiatric Medical Association: September 2016, Vol. 106, No. 5, pp. 338-343.

Background: In clinical and research settings, ankle joint dorsiflexion needs to be reliably measured. Dorsiflexion is often measured by goniometry, but the intrarater and interrater reliability of this technique have been reported to be poor. Many devices to measure dorsiflexion have been developed for clinical and research use. An evaluation of 12 current tools showed that none met all of the desirable criteria. The purpose of this study was to design and develop a device that rates highly in all of the criteria and that can be proved to be highly reliable.

Methods: While supine on a treatment table, 14 participants had a foot placed in the Charles device and ankle joint dorsiflexion measured and recorded three times with a digital inclinometer. The mean of the three readings was determined to be the ankle joint dorsiflexion.

Results: The analysis used was intraclass correlation coefficient (ICC). There was very little difference in ICC single or average measures between left and right feet, so data were pooled (N = 28). The single-measure ICC was 0.998 (95% confidence interval, 0.996-0.998). The average-measure ICC was 0.998 (95% confidence interval, 0.995-0.999). Limits of agreement for the average measure were also very good: −1.30° to 1.65°.

Conclusions: The Charles device meets all of the desirable criteria and has many innovative features, increasing its appropriateness for clinical and research applications. It has a suitable design for measuring dorsiflexion and high intrarater and interrater reliability.
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Admin2 · Oct 22, 2016

Related Topics:
Lunge ankle dorsiflexion measurement device
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'Anklebot' helps determine ankle stiffness

NewsBot · Oct 22, 2016

Here is an image from the author of the device:

davidh · Oct 22, 2016

I just copied this from the "anklebot" related article.
"In particular, the ankle — the crucial juncture between the leg and the foot — is an anatomical jumble,"

I can't believe I missed it first time around. The ankle is very cleverly designed. We don't have a handle on it yet which is why, I suppose, successful ankle joint replacements are not commonplace, and stupid statements like this are released.

Put the foot plantigrade and place it on an environment it wasn't designed for (hard, flat surfaces), and it certainly seems like an anatomical jumble, with ligaments which look stronger medially rather than laterally, even though lateral ligament ankle sprains are common, but medial ligament ankle strains much less so.
Try to dorsiflex the foot without orientating the malleolar axis between the malleoli first, and all you get is an early block.

It's not even amusing, this stuff. It's dispiriting.

NewsBot · Jul 18, 2018

Reliability of Three Inclinometer Placements for Weight-Bearing Dorsiflexion
Lisa Custer, PhD, ATC; Nicole Cosby, PhD, ATC
Athletic Training and Sports Health Care. 2018;10(4):181-187https://doi.org/10.3928/19425864-20180312-01

PURPOSE:
To measure the intra-rater and inter-rater reliability of three different bubble inclinometer placements on two different weight-bearing dorsiflexion range of motion (DFROM) stances in healthy patients.

METHODS:
A novice examiner and an experienced examiner assessed weight-bearing DFROM measurements using a bubble goniometer on 18 healthy participants over 2 days. All participants performed knee straight and knee bent DFROM stances while the examiners used three different bubble inclinometer placements, tibial tuberosity, distal tibia, and aligned with the fibula. For each inclinometer placement, intra-rater and inter-rater reliabilities were calculated.

RESULTS:
For both the knee straight and the knee bent stance, bubble inclinometer placement over the distal tibia provided the best overall reliability.

CONCLUSIONS:
Clinicians should place a bubble inclinometer over the distal tibia when performing weight-bearing DFROM.
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NewsBot · Apr 2, 2019

The Reliability and Criterion Validity of a Novel Dorsiflexion Range of Motion Screen
Jenna Gourlay, DPT; Garrett Bullock, DPT; Allison Weaver, DPT; Kyle Matsel, DPT; Kyle Kiesel, PhD; Phillip Plisky, DSc
Athletic Training and Sports Health Care. https://doi.org/10.3928/19425864-20190214-02

PURPOSE:
To determine the reliability and criterion validity of a novel standing ankle dorsiflexion screen (SADS) in comparison to the half kneeling dorsiflexion test (HDT).

METHODS:
Ankle dorsiflexion range of motion (DROM) was measured using the SADS and HDT. The SADS was performed in a standing heel-to-toe position, scoring the back ankle dorsiflexion as behind, within, or beyond, relative to back knee alignment. The HDT was measured with an inclinometer.

RESULTS:
The intraclass correlation (ICC) values from the electronic inclinometer were reported as mean values for the three trials at 0.95 (ICC: 0.92 to 0.97). The Kappa values were calculated for a single trial for the SADS and ranged from 0.61 to 0.81 with percent agreement ranging from 86% to 94%. There was a significant difference in the HDT between those who scored behind and beyond and within and beyond on the SADS (P < .01 for both). There was no difference for within and behind (P = .08).

CONCLUSIONS:
This novel ankle screen can be considered reliable for screening ankle DROM. Criterion validity, as compared to the HDT, exhibited a difference between beyond and behind and beyond and within. The screen may provide clinicians with an effective tool to quickly evaluate ankle DROM deficits.
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