Low Prevalence of Hip and Knee Arthritis in Active Marathon Runners An American study examined for 675 marathon runners as often in this population occurs an arthrosis. The runners were on average 48 years old (18-79 years), have average 36 miles a week in training (10-150 miles) and had 76 marathons (3-60 years) in the last 19 years (3-60 years)1016 marathons) run.Overall, 47% of the runners reported pain in the field of hip or knees, 8.9% of the runners was a manifest arthrosis. When only the US runners have been taken into account, 8.8% of runners showed an arthrosis, which is well below the percentage of 17.9% for an American comparative collective. Seven runners continued to ran despite a hip or knee prosthesis.As risk factors age, family anamnesis and past operations were identified.
The number of years, the intensity when running, the flow volume and the number of marathons were no risk factors for arthrosis. The whole evaluation can be found under https://pubmed.ncbi.nlm.nih.gov/29342063/