Fifteen- to 20-year results of uncemented tapered fully porous-coated cobalt-chrome stems

Yoon, Taek Rim; Rowe, Sung-Man; Kim, Myung-Sun; Cho, Sang-Gwon; Seon, Jong Keun

doi:10.1007/s00264-007-0337-6

Cited by 31 publications

(18 citation statements)

References 26 publications

(22 reference statements)

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“…No other THA concept has this kind of result on THA stability, not even large head diameter metal-on-metal or ceramic-onceramic THA series. (Tables 1 and 2) If we compare our series to other cementless THA series [8][9][10][11][12][13][14][15][16][17], or cemented THA series [19][20][21][22], our series survival rate was similar. Mean global cementless THA survival rate was less than 80% at 15 years (from 76 to 88%).…”

Section: Dislocation Ratementioning

confidence: 98%

Primary total hip arthroplasty with dual mobility socket to prevent dislocation: a 22-year follow-up of 240 hips

Boyer

Philippot²,

Géringer

et al. 2011

International Orthopaedics (SICOT)

191

134

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Purpose The longest follow-up dual mobility series from inventor Gilles Bousquet focussing on implant survival and the incidence of dislocation. Methods This was a retrospective study from 1985 to 1990, on 240 hips using a PF® modular femoral stem and a dual mobility Novae® tripodal socket (SERF). Results The 22-year follow-up global survival rate was 74%. No dislocation occurred, 41 hips were revised, including ten retentive failures (RF), 12 hips were lost to follow-up, 87 patients (99 hips) died without revision, and 90 hips were still in situ. Conclusion The dual mobility socket global survival rate is comparable to similar series. The 0% dislocation rate demonstrates the success of dual mobility with regard to implant stability. The main issues were cup fixation, which might be improved by the use of macrostructures and HA coating, and osteolytic lesions, caused by polyethylene wear. Traditionally suitable for patients older than 60 years, dual mobility might be extended for use in patients over 50.

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Section: Dislocation Ratementioning

confidence: 98%

Primary total hip arthroplasty with dual mobility socket to prevent dislocation: a 22-year follow-up of 240 hips

Boyer

Philippot²,

Géringer

et al. 2011

International Orthopaedics (SICOT)

191

134

View full text Add to dashboard Cite

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“…Porous coated implants for bone ingrowth, whether they are proximally or extensively coated, have a long term survival rate of 79% to 94.7% at about a 15 year followup [18,36]. However, these implants are sometimes associated with delamination of coating layer, osteolysis, and stress shielding due to excessive bone ingrowth in the diaphyseal area, especially in extensively porous coated implants [6,24,25].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Cell Integration to Titanium Alloy by Surface Treatment with Microarc Oxidation: A Pilot Study

Lim

Kwon

Sun

et al. 2009

Clinical Orthopaedics &Amp; Related Research

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Microarc oxidation (MAO) is a surface treatment that provides nanoporous pits, and thick oxide layers, and incorporates calcium and phosphorus into the coating layer of titanium alloy. We presumed such modification on the surface of titanium alloy by MAO would improve the ability of cementless stems to osseointegrate. We therefore compared the in vitro ability of cells to adhere to MAOed titanium alloy to that of two different types of surface modifications: machined and grit-blasted. We performed energy-dispersive x-ray spectroscopy and scanned electron microscopy investigations to assess the structure and morphology of the surfaces. Biologic and morphologic responses to osteoblast cell lines (SaOS-2) were then examined by measuring cell proliferation, cell differentiation (alkaline phosphatase activity), and avb3 integrin. The cell proliferation rate, alkaline phosphatase activity, and cell adhesion in the MAO group increased in comparison to those in the machined and grit-blasted groups. The osteoblast cell lines of the MAO group were also homogeneously spread on the surface, strongly adhered, and well differentiated when compared to the other groups. This method could be a reasonable option for treating the surfaces of titanium alloy for better osseointegration.

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“…Uncemented stems of modern design have high survival rates (89% to 97%) at longer than 15 years of followup [7,20,25]. Enduring clinical performance and persistent osseointegration have encouraged the use of this concept, especially in younger patients.…”

Section: Introductionmentioning

confidence: 99%

Long-term Periprosthetic Remodeling in THA Shows Structural Preservation

Stiehl

2009

Clinical Orthopaedics &Amp; Related Research

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Although periprosthetic changes after THA have been well documented in short-term studies of less than 5 years, little is known about long-term changes. Long-term mineral changes must be evaluated against an unaffected limb control and for regional differences about a prosthesis. This study evaluated long-term periprosthetic remodeling using dual-energy xray absorptiometry in a prospective study of patients who had noncemented THAs with a modular titanium alloy proximal-loading prosthesis. In 15 randomly selected patients, bone mineral content was measured within 15 months of surgery and then at late mean followup of 13 years. In the affected femur, there was a major decrease in periprosthetic bone mineral content in Zones 1, 2, 6, and 7 (Gruen et al.) over the course of the study. The overall decrease in Zone 7 was 39% in bone mineral content. Estimates made after controlling for the contralateral unaffected femur indicate a major loss only in Zone 7 and preservation of mineral content in Zones 3, 4, and 5 of the proximal femur. The data suggest bone remodeling maintains the overall structural integrity of the upper femoral shaft.

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Fifteen- to 20-year results of uncemented tapered fully porous-coated cobalt-chrome stems

Cited by 31 publications

References 26 publications

Primary total hip arthroplasty with dual mobility socket to prevent dislocation: a 22-year follow-up of 240 hips

Primary total hip arthroplasty with dual mobility socket to prevent dislocation: a 22-year follow-up of 240 hips

Enhanced Cell Integration to Titanium Alloy by Surface Treatment with Microarc Oxidation: A Pilot Study

Long-term Periprosthetic Remodeling in THA Shows Structural Preservation

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