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Acute tear of the fascia cruris at the attachment to the Achilles tendon: a new diagnosis
  1. Nick Webborn1,
  2. Dylan Morrissey2,
  3. Kasthuri Sarvananthan2,
  4. Otto Chan3
  1. 1Centre for Sport and Exercise Science and Medicine (SESAME), University of Brighton, Eastbourne, UK
  2. 2Centre for Sports and Exercise Medicine, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, Mile End Hospital, London, UK
  3. 3BMI London Independent Hospital, London, UK
  1. Correspondence to Dr Nick Webborn, The Centre for Sport and Exercise Science and Medicine (SESAME), University of Brighton, Eastbourne, UK; nickwebborn{at}sportswise.org.uk

Abstract

Background The fascia cruris encloses the posterior structures of the calf and connects to the paratenon and the Achilles tendon. We describe the clinical presentation, ultrasound imaging characteristics and the time to the recovery of tears of the fascia cruris at the attachment to the Achilles tendon.

Methods Retrospective review of 11 tears of the fascia cruris in the different legs as separate events in 9 patients (6 male and 3 female, mean age 35.52 years, range 11–48) identified using diagnostic ultrasound, after presenting with Achillodynia.

Results 11 participants presented at a mean of 4.5 weeks (range 0.5–12) after onset of symptoms. The left Achilles was more commonly injured than the right (7 : 4) and the lateral side more than the medial (6 : 4) with one case with medial and lateral presentation. Clinically, there was swelling and tenderness over the medial or lateral border in the mid to upper portion of the Achilles. 7 of the 11 (63.6%) had functional overpronation. Ultrasound appearances of a tear were identified as hypoechoic area extending from the medial or lateral border of the Achilles extending along the anatomical plane of the fascia cruris. Average return to activity was 5.2 weeks (range 1–22). Participants presenting later had longer recovery but all participants returned to full activity (r=0.4).

Conclusions This is the first description of the clinical details and sonographic findings of a tear to the fascia cruris at its attachment to the Achilles tendon. This needs to be considered as a cause of Achillodynia in athletes as recognition will affect the management.

  • Achilles
  • Ultrasound
  • Soft tissue
  • Sporting injuries
  • Tendon

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/

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