Ultrasound- and Colour Doppler-Guided WALANT Surgery for Insertional Achilles Tendinopathy: A Prospective Case Series on 53 Consecutive Patients. - Bazala, Philip; Waldén, Markus; Roberts, David; Spang, Christoph; Alfredson, Håkan (Journal of Functional Morphology & Kinesiology, 2026)