HEMIRESURFACING M. E. Cabanela, M.D. Professor of Orthopedic Surgery Mayo Clinic College of Medicine Rochester, Minn.

Surface hemiarthroplasty fixed with cementBest indication: Stage III AVN with minimal acetabular damageHEMIRESURFACING

Adili A, Trousdale RT: Femoral head resurfacing for treatment of osteonecrosis in the young patient. CORR 417:93-101, 2003.

HEMIRESURFACINGDemographics2-1997 - 4-200029 conseiccutive pts18 m/10 f31.6 yrs (12-48)Hip pain 23 mos (6-96 mos)Etiology: steroid 16 ETOH 2 other 5 None 4F-up 34 mos (24-63)

HEMIRESURFACINGResultsHHS 48.1 - 79.3Survivorship 93.5% @ 1 yr 75.9% @ 3 yrsRevision to THA 8 hips (27.6%)Pain in groin 4 hips (14%)Satisfactory pain relief 62.5% @ 3 yrs

HEMIRESURFACINGLiterature ReviewHungerford 91% survival @ 5 yrs 71% @ 10 yrsBeaul 79% revision free @ 5 yrs 59% @ 10 yrsNelson 82% success @ 6.2 yrsMont 90% survival @ 7 yrs

HEMIRESURFACINGAdvantagesMinimal bone resectionRevision to THA not compromisedNo EHDPCan delay THACan be satisfactory interim solution

HEMIRESURFACINGConclusionsUnpredictable pain reliefAcceptable alternative in young pt with ON and preserved acetabulum