PATH-2: Platelet Rich Plasma in Achilles Tendon Healing

PRP injection delivered into the tendon rupture gap Intervention - PRP Injection: The injection is the intervention. A blood sample is withdrawn from patient. Away from patient part of sample is spun down in centrifuge to produce 'Platelet Rich Plasma' (PRP). Patient returns to treatment area and their own PRP is then injected into tendon rupture gap. This is carried out by a surgeon or extended scope physiotherapist, generally in the outpatient clinic, after a local anaesthetic has been applied. Patient is lying face down during procedure, unaware of treatment given to tendon at back of leg. Remaining blood sample sent for analysis.

Imitation injection delivered into the tendon rupture gap Sham - Imitation Injection: The injection is the intervention. A blood sample is withdrawn from patient. Treatment is prepared. Patient returns to treatment area and a needle (no syringe) is inserted and held into tendon rupture gap to mimic injection (after local anaesthetic has been applied). No active ingredient given. Carried out by surgeon or extended scope physiotherapist, generally in the outpatient clinic. Patient is lying face down during procedure, unaware of treatment given to tendon at back of leg. Blood sample sent for analysis.