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Updated: May 21, 2026

Murine Hind Limb Explant Model for Studying the Mechanobiology of Achilles Tendon Impingement

Murine Hind Limb Explant Model for Studying the Mechanobiology of Achilles Tendon Impingement

Published on: December 8, 2023

Insertional Achilles tendinitis and Haglund's deformity.

Steve Kang¹, David B Thordarson, Timothy P Charlton

¹USC Department of Orthopaedic Surgery, Los Angeles, CA 90033, USA.

Foot & Ankle International

|June 28, 2012

Summary

This summary is machine-generated.

Haglund deformity does not indicate insertional Achilles tendinitis, as it occurs in asymptomatic individuals. Surgical removal of Haglund deformity may not be necessary for treating insertional Achilles tendinitis.

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Area of Science:

Orthopedic surgery
Radiology
Sports medicine

Background:

Haglund deformity, an enlarged calcaneal prominence, is often linked to insertional Achilles tendinitis.
No prior studies have correlated Haglund deformity characteristics with insertional Achilles tendinitis.
This study aimed to identify potential correlations between Haglund deformity features and insertional Achilles tendinitis.

Purpose of the Study:

To analyze Haglund deformity characteristics in patients with and without insertional Achilles tendinitis.
To determine if specific Haglund deformity measurements correlate with insertional Achilles tendinitis.
To investigate the prevalence of calcification in the Achilles tendon insertion among patients with Haglund deformity.

Main Methods:

Retrospective radiographic review of 44 patients with insertional Achilles tendinitis and 50 controls.
Introduction of novel measurements: Haglund deformity height and peak angle.
Analysis of radiographic parameters including Bohler's angle, Fowler-Philip angle, and parallel pitch sign.

Main Results:

No statistically significant differences in Haglund deformity height or peak angle between groups.
Positive parallel pitch sign was more common in the control group (60% vs. 41.7%).
Calcification at the tendon insertion was observed in 73% of the insertional Achilles tendinitis group.

Conclusions:

Haglund deformity is not a reliable indicator of insertional Achilles tendinitis.
The presence of Haglund deformity does not necessitate its surgical removal for treating insertional Achilles tendinitis.
Calcification is common in the Achilles tendon insertion of patients with insertional Achilles tendinitis.