Variability of insertion of the Achilles tendon on the calcaneus: an MRI study of younger subjects.

The insertional location of the Achilles tendon traditionally has been thought to be on the superior aspect of the calcaneus. This is based on descriptions and illustrations in anatomical textbooks. Our study is a digital magnetic resonance imaging (MRI) examination of the insertional location of the Achilles tendon in 69 subjects, 12 to 40 years of age.

A specific bone marrow edema around the foot and ankle following trauma and immobilization therapy: pattern description and potential clinical relevance.

Background: We describe a characteristic pattern of bone marrow edema about the foot and ankle seen by MRI in patients who have undergone recent immobilization therapy and investigate potential etiologies as well as possible clinical significance.

Methods: Three reviewers retrospectively evaluated 52 ankle MRI examinations in 18 patients with abnormal signals compatible with bone marrow edema who had been treated with various types and durations of immobilization of the lower limb after traumatic injury. Bone marrow edema patterns were characterized by distribution, extent, location, and interval evolution or resolution on subsequent followup MRI examination.