 The forward translation will be done with the method of used by the American Association of Orthopedic Surgeons AAOS Outcomes Committee. Two native Finnish-speakers and fluent in English translators, T1 and T2, translate the original version of the FAAM to Finnish language. T1 is aware of the items being examined in in the questionnaire being translated, but not a healthcare professional. T2 is so called naïve translator. A synthesis of T1 and T2 versions, T-12, is conducted under the supervision of a medical linguistic methodologist. The T-12 version is translated back to English by two native, English as their mother tongue speaking translators BT1 and BT2, neither aware nor informed of the items explored nor with medical background. 