Metabolic Complications Following Achilles Tendon Rupture - A Cohort Study

Introduction This study will evaluate the effect on glucose, lipid and bone metabolism following conservative orthopaedic procedures in patients who suffered from acute Achilles tendon rupture. The sedentary rehabilitation period following these procedures may impact negatively upon glucose, lipid and bone metabolic pathways whereas the more physically active rehabilitation period instituted 8 weeks after the injury is hypothesized to impose positive metabolic effects. The study is addition to the on-going clinical trial, Non-operative Treatment of Acute Achilles Tendon Rupture: Early Controlled Mobilization Compared With Immobilization, ClinicalTrials.gov Identifier: NCT02015364. Perspective This study will establish whether the well-known effects on glucose, lipid and bone metabolism of a sedentary lifestyle can be observed already following 8 weeks of almost total abstain from physical activity in non-diabetic individuals, who suffered an acute Achilles tendon rupture. Thereby, we will add knowledge to the previous findings following strict bed-rest in healthy individuals on glucose and lipid metabolism and bone turnover. In a clinical perspective it is important to examine the extent to which individuals deteriorate in various metabolic pathways to better understand the pathophysiology behind these defects both in healthy individuals and in patients, who undergo bed rest or an equal reduction in physical activity as part of their rehabilitation. Study design The present study includes 50 cases, who are examined early following injury (\< 2 weeks) (baseline), 8 weeks (6 - 10 weeks) after injury and 52 weeks (40 - 64 weeks) after injury, respectively. Oral glucose tolerance test (OGTT) with ingestion of 75 g of glucose during a maximum of 3 min from baseline (0 min). Plasma for glucose, insulin, C-peptide, NEFA will be drawn. The individual will bring in morning spot urine for measurement of suPAR, creatinine, albumin and orosomucoid. The individual will hav