Which finding is NOT associated with Achilles' tendonitis?

In the context of Achilles' tendonitis, prominent hyperechoic areas interspersed within the tendon are not a typical finding associated with this condition. Achilles' tendonitis primarily involves degeneration and structural changes in the tendon due to overuse or injury, leading to specific ultrasound characteristics.

The presence of irregular margins and thickening of the tendon are common sonographic features observed in cases of Achilles' tendonitis. The tendon usually appears thicker than normal, often exceeding 5 mm, and can display irregularities along its edges.

In addition, when the tendon thickness exceeds 7 mm, this indicates further degeneration and is another sign associated with tendonitis. These features reflect the inflammatory changes within the tendon and are key indicators for diagnosis.

On the contrary, prominent hyperechoic areas within the tendon usually suggest conditions such as tendinosis or the presence of scar tissue, and they are not standard findings expected in straightforward tendonitis. Therefore, the identification of these areas is less aligned with the established characteristics of Achilles' tendonitis, making this finding distinct from the others.