title: Long-Term Clinical and Radiographic Outcomes of Porous Tantalum Monoblock Acetabular Component in Primary Hip Arthroplasty: A Minimum of 15-Year Follow-Up.
abstract: The porous tantalum monoblock cup has demonstrated excellent short-term and midterm clinical and radiographic outcomes in primary THA, but longer follow-up is necessary to confirm the durability of these results into the second decade. The purpose of this study is to report the clinical and radiographic outcomes for this monoblock cup with a minimum 15-year follow-up.
  
  
  
  From June 1998 to December 1999, 61 consecutive patients (63 hips) underwent primary THA with a tantalum monoblock acetabular component. All patients were followed clinically and radiographically for a minimum of 15 years. At a mean of 15.6 years (range, 15-16 years) of follow-up, 5 patients had died, and 4 had been lost to follow-up, leaving 52 patients (54 hips) for analysis. The underlying diagnosis that led to the primary THA was primary osteoarthritis in 43 hips, avascular necrosis in 4, developmental hip dysplasia in 3, rheumatoid arthritis in 3 and post-traumatic osteoarthritis in 1.
  
  
  
  One cup was revised for deep infection; at surgery, the cup showed osseointegration. At a mean follow-up of 15.6 years (range, 15-16 years), the survivorship with cup revision for aseptic loosening as end point was 100%. There was no radiographic evidence of loosening, migration, or gross polyethylene wear at last follow-up. The mean Harris Hip Scores improved from 47 points preoperatively to 94 points.
  
  
  
  The porous tantalum monoblock cup in primary THA demonstrated excellent clinical and radiographic outcomes with no failures because of osteolysis or loosening at a minimum follow-up of 15 years.
authors.affiliation: Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.
authors.forename: Ivan
authors.initials: I
authors.lastname: De Martino
authors.affiliation: Orthopedic Surgery Division, Department of Geriatrics, Neurosciences, and Orthopedics, Catholic University of the Sacred Heart, Agostino Gemelli University Hospital, Roma, Lazio, Italy.
authors.forename: Vincenzo
authors.initials: V
authors.lastname: De Santis
authors.affiliation: Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.
authors.forename: Peter K
authors.initials: PK
authors.lastname: Sculco
authors.affiliation: Orthopedic Surgery Division, Department of Geriatrics, Neurosciences, and Orthopedics, Catholic University of the Sacred Heart, Agostino Gemelli University Hospital, Roma, Lazio, Italy.
authors.forename: Rocco
authors.initials: R
authors.lastname: D'Apolito
authors.affiliation: Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.
authors.forename: Lazaros A
authors.initials: LA
authors.lastname: Poultsides
authors.affiliation: Orthopedic Surgery Division, Department of Medical and Surgical Sciences, University of Catanzaro Magna Græcia, Catanzaro, Calabria, Italy.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Gasparini
mesh_terms: D000077:Acetabulum; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000601:surgery; D006622:Hip Prosthesis / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D020959:Polyethylene; D016062:Porosity; D011475:Prosthesis Failure; D012189:Retrospective Studies; D013635:Tantalum
chemical_list: D013635:Tantalum; D020959:Polyethylene
keywords: aseptic loosening; cementless fixation; osseointegration; osteolysis; porous tantalum monoblock cup; total hip arthroplasty