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Achilles tendon insertion: an in vitro anatomic study

W Chao1, J T Deland, J E Bates

  • 1Hospital for Special Surgery, New York, NY 10021, USA.

Foot & Ankle International
|February 1, 1997
PubMed
Summary
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This study examined Achilles tendon insertions in cadavers. Calcific Achilles tendinitis altered insertion patterns, with spurs located laterally at the tendon

Area of Science:

  • Orthopedics
  • Anatomy
  • Radiology

Background:

  • The Achilles tendon insertion on the calcaneus is crucial for foot biomechanics.
  • Calcific Achilles tendinitis can alter tendon morphology and insertion sites.

Purpose of the Study:

  • To investigate the anatomical characteristics of the Achilles tendon insertion on the calcaneus.
  • To describe the insertion patterns in specimens with and without calcific Achilles tendinitis.

Main Methods:

  • Study of 17 adult fresh-frozen below-knee amputation cadaver specimens.
  • Detailed examination and outlining of the Achilles tendon insertion on the calcaneus.
  • Radiographic analysis using lead beads to define insertion length and location.

Main Results:

Related Experiment Videos

  • The Achilles tendon consistently terminated at the medial and lateral borders of the calcaneus.
  • Medial calcaneal insertion distance was greater than lateral.
  • In calcific tendinitis, spurs were laterally located at the inferior border, with tendon insertion occurring between the spur and calcaneus.

Conclusions:

  • The Achilles tendon insertion anatomy is generally consistent, with greater medial than lateral extent.
  • Calcific Achilles tendinitis involves spurs at the inferior lateral insertion, altering the tendinous attachment site.