Demographic, baseline and 6-month follow-up data from the FOLK trial. 40 patients aged over 50 years with symptomatic radiographic lateral tibiofemoral knee osteoarthritis. Intervention was motion control (n = 18) or neutral shoes (n = 22) and advised to wear them >6 hours/day over 6 months. All data presented in the results paper (BMJ Open. 2022;12(9):e061627) available in XLSX format