 Patients with acute Achilles tendon ruptures will undergo a standardized suture repair a.m. Kessler using resorbable suture Vicryl size 1 at Bispebjerg Hospital and be placed in a brace that inhibits ankle joint movement. During surgery, patients will get four tantalum beads with a diameter of 1.0 mm implanted with a venflon needle in the proximal and the distal stub of the tendon. Thereafter they will be randomized to three post-operative treatment regimes: 