Related Experiment Video
Updated: May 25, 2026

Measurement of Healthy and Injured Triceps Surae Morphology
Published on: October 27, 2023
A lipoma within the Achilles tendon sheath
Asif Z Khan1, Masood Shafafy, Mark D Latimer
1Peterborough and Stamford Hospitals NHS Foundation Trust, Department of Trauma & Orthopaedics, Peterborough City Hospital, Edith Cavell Campus, Bretton Gate, Bretton, Peterborough PE3 9GZ, United Kingdom. azkhan@doctors.org
Abstract:
We report a case demonstrating a rare finding associated with a relatively common injury. Lipomata are rarely found within tendon sheaths; but in the case of our patient, at the time of operative repair for a ruptured Achilles tendon, we found a fatty growth within the tendon sheath. The diagnosis of a lipoma was confirmed by histology. Although uncommon, it remains important to be aware of the existence of neoplastic growths within tendon sheaths and to establish the exact nature of these growths by histological analysis.
Related Concept Videos
Skeletal Muscle Anatomy
Appendicitis
Muscles of the Leg that Move the Foot and Toes
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles.
External Anatomy of the Kidney
The kidneys are located in the retroperitoneal space on either side of the vertebral column, protected posteriorly by the 11th and 12th ribs. The right kidney sits slightly lower than the left owing to the presence of the liver...
Aneurysm I: Introduction

