Ototoxicity in Patients With MoM Hip Bearings

Mid frequency hearing loss will be determined once with a conventional pure-tone audiometry test during a visit of the outpatient clinic

Age will be determined once, during a visit of the outpatient clinic

The subjective general health and subjective hearing loss will be determined by Amsterdam Inventory for Auditory Disability and Handicap. The questionnaire will be completed by the participants once,at time of the visit of the outpatient clinic

BMI will be dermined once, at time of measurement weight and height will be combined to report BMI in kg/m^2

Cobalt serum concentration will be dermined once, throught venipuncture, at time of the visit of the outpatient clinic.

Chromium serum concentration will be dermined once, throught venipuncture, at time of the visit of the outpatient clinic.