Table 3: Revision details (7 aseptic revisions—17.5% aseptic revision rate at mean 65-month mean followup).

DiagnosisCharnley classFemoral head typeFemoral head sizeFemoral component Acetabular componentArticulationReason for revisionRevision detailsTime to revision (months)

AVNBCoCr22Biomet IntegralBiomet RBMOPRecurrent dislocations-poly wear. Exchanged liner and head.123.7

JRACCoCr22DePuy SROMBiomet RBMOPPeriprosthetic femur fracture.Stem revised.92.5

OA 2/2 PerthesACoCr45DePuy SROMDePuy ASRMOM-ASRAseptic loosening.
No metallosis.
Stem loose, fibrous fixation cup. Complete revision with MOP.26.7

Failed hip fusion
(Fused for AVN)
ACoCr28Biomet MH CalcarBiomet RBMOM (sandwich)Recurrent dislocation.
Metallosis found.
Cup and stem stable.
Revised to MOP.

AVNACoCr38Biomet IntergralBiomet M2AMOM-M2AMetallosis-mild metal debris/excessive scar. No loosening. Revised to MOP92.1

OA 2/2 CDHACoCr41DePuy SROMDePuy ASRMOM-ASRMetallosis.
No loosening. Revised to MOP.60.8

OA 2/2 CDHACoCr46DePuy SROMDePuy ASRMOM-ASRMetallosis.
No loosening.
Revised to MOP

AVN: avascular necrosis, JRA: juvenile rheumatoid arthritis, OA: osteoarthritis, CDH: congenital dysplasia of the hip, CoCr: cobalt chromium, MOM: metal on metal, MOSP: metal on conventional polyethylene.