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J. Funct. Morphol. Kinesiol. 2016, 1(4), 378-381; doi:10.3390/jfmk1040378

Width of the Retrocalcaneal Bursa Is Not Altered by the Ankle Motion or Flexor Hallucis Longus Contraction

1,†,* , 1,†
,
2,†
and
3,†
1
Department of Rehabilitation, Fukui General Hospital Clinic, Fukui 910-0067, Japan
2
Department of Rehabilitation, Fukui College of Health Sciences, Fukui 910-3113, Japan
3
Department of Orthopaedic Surgery, Fukui General Hospital, Fukui 910-8561, Japan
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Giuseppe Musumeci
Received: 19 August 2016 / Revised: 27 September 2016 / Accepted: 17 October 2016 / Published: 1 November 2016
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Abstract

The purpose of this study was to assess changes in the thickness of the retrocalcaneal bursa (RB) with respect to the ankle position with or without flexor hallucis longus (FHL) contraction. Forty feet of 20 female volunteers were examined. RB was sonographically scanned as the horizontal short-axis image of the posteromedial talar process and the calcaneal tuberosity. RB thickness was measured at three different ankle positions (20° dorsiflexion, neutral, and 40° plantar flexion) with or without FHL contraction. Without FHL contraction, the mean thickness of the RB was 2.6 mm in dorsiflexion, 2.4 mm in neutral, and 2.3 mm in plantar flexion. With FHL contraction, the mean thickness of the RB was 2.5 mm in dorsiflexion, 2.5 mm in neutral, and 2.3 mm in plantar flexion. No significant differences were detected with respect to the ankle position or FHL contraction. This study showed that in healthy subjects, the thickness of the RB in the horizontal plane did not change with respect to the ankle position with or without FHL contraction. View Full-Text
Keywords: retrocalcaneal bursa; ultrasound imaging; morphology retrocalcaneal bursa; ultrasound imaging; morphology
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Hamada, M.; Ota, M.; Azuma, N.; Yamakado, K. Width of the Retrocalcaneal Bursa Is Not Altered by the Ankle Motion or Flexor Hallucis Longus Contraction. J. Funct. Morphol. Kinesiol. 2016, 1, 378-381.

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J. Funct. Morphol. Kinesiol. EISSN 2411-5142 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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