Ototoxicity in Patients With MoM Hip Bearings

Age

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

Time frame: Age will be determined once for each participant, at time of the visit of the outpatient clinic

subjective general health and subjective hearing loss measured with the Amsterdam Inventory for Auditory Disability and Handicap questionnaire.

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

Time frame: The questionnaire will be completed once by each participant, at time of the visit of the outpatient clinic

BMI

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

Time frame: Lenght and weight will be determined once for each participant, at time of the visit of the outpatient clinic

Cobalt serum concentration

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

Time frame: Cobalt serum concentration will be determined once for each participant, at time of the visit of the outpatient clinic

Chromium serum concentration

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