Hip and Knee Arthroplasty - Surface Hippy Guide to Hip Resurfacing

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Mortality following Primary Hip and Knee Replacement Mortality information has been obtained by matching all Registry data up to and including 31 st December 2007 with the National Death Index (NDI). The NDI is the national mortality database maintained by the Australian Institute of Health and Welfare (AIHW). Access to the data required approval of a formal ethics application to AIHW. Analysis of Mortality Adjusted mortality is obtained after direct standardisation of the crude cumulative mortality data by five year age intervals and sex to the Estimated Resident Population Status based on the 2001 census. As the total population has a younger age structure than the population of the Registry, the adjusted mortality is substantially lower than the crude mortality. By minimising the effects of age and sex differences within groups, the adjusted measure may be used to compare the mortality of different procedures and will become useful in comparing mortality over time. The rate per 100 person years has been calculated from the date of procedure to either the date of death or the end of the valid death search by the AIHW (31 st December 2007). This provides a true rate. Exact confidence intervals based on the Poisson distribution of the number of observed deaths are also given. Mortality Associated with Primary Hip Replacement The mortality associated with hip replacement varies depending on the category and there has been little change in mortality trends over the last year. As would be anticipated, crude cumulative mortality of primary partial hip replacement is high (45.4%) compared to primary total hip (6.6%). This is also reflected in the mortality rate per 100 person years, 21.2 for partial and 2.0 for primary total hip replacement. After standardising mortality for age and sex these differences are still apparent, 23.3% for partial and 2.4% for primary hip replacement (Table M1). The risk of death for partial hip replacement is over five times greater than primary total hip replacement (hazard ratio (adjusted for age and sex) (Adj HR)=5.22; 95% CI (5.05, 5.40) p
MORTALITY FOLLOWING PRIMARY HIP AND KNEE REPLACEMENT 1/9/1999 – 31/12/2007 Primary Hip Replacement Table M1: Mortality following Primary Hip Replacement Type of Hip Replacement Number Deaths Number Patients Cumulative Mortality (% deaths) Standardised Mortality Person Years Rate per 100 Person Years Exact 95% CI Primary Partial Hip 13850 30491 45.4 23.3 65402 21.2 (20.83, 21.53) Primary Total Hip 7665 115823 6.6 2.4 379067 2.0 (1.98, 2.07) Total 21515 146314 14.7 3.8 444469 4.8 (4.78, 4.91) Figure M1: Cumulative Percent Survival of Primary Hip Replacement Number at Risk 0 Yr 1 Yr 2 Yrs 3 Yrs 4 Yrs 5 Yrs 6 Yrs 7 Yrs Partial Hip 30491 19120 13518 9163 5743 3212 1361 358 Total Hip 115823 96616 78087 60310 43372 27685 13240 3405 Table M2: Yearly Cumulative Percent Survival of Primary Hip Replacement CPS 1 Yr 2 Yrs 3 Yrs 5 Yrs 7 Yrs Partial Hip 73.7 (73.2, 74.2) 63.4 (62.9, 64.0) 54.9 (54.3, 55.6) 41.0 (40.3, 41.8) 31.7 (30.6, 32.8) Total Hip 98.2 (98.1, 98.3) 96.5 (96.3, 96.6) 94.5 (94.4, 94.7) 90.2 (90.0, 90.5) 85.9 (85.4, 86.3) 191
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Hip and Knee Arthroplasty ANNUAL RE
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Australian Orthopaedic Association
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PRIMARY PARTIAL KNEE REPLACEMENT...
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PRIMARY TOTAL HIP REPLACEMENT......
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PRIMARY TOTAL KNEE REPLACEMENT ....
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viii
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RIMARY TOTAL RESURFACING HIP REPLAC
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EXECUTIVE SUMMARY This executive su
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INTRODUCTION This is the eighth Ann
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supply aggregate data and negotiati
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PARTICIPATING HOSPITALS & COORDINAT
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VICTORIA PUBLIC HOSPITALS Austin He
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QUEENSLAND PUBLIC HOSPITALS Bundabe
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WESTERN AUSTRALIA PUBLIC HOSPITALS
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HIP REPLACEMENT GENERAL INTRODUCTIO
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difference is also evident when com
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Table HG2: Number of Hip Replacemen
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Table HG4: Primary Hip Replacement
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Table HG8: Primary Total Resurfacin
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The use of monoblock prostheses in
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PRIMARY PARTIAL HIP REPLACEMENT 1/9
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Table HP2: 10 Most Common Unipolar
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Table HP4: 10 Most Common Bipolar H
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Table HP6: Primary Partial Hip Repl
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Table HP14: Primary Partial Hip Rep
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Table HP15: Primary Unipolar Monobl
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Table HP19: Primary Bipolar Hip Rep
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Table HP24: Primary Unipolar Monobl
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Table HP32: Primary Unipolar Modula
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Primary Unipolar Modular Hip Replac
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Primary Bipolar Hip Replacement Pro
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PRIMARY TOTAL HIP REPLACEMENT The a
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Effect of Bearing Surface For the f
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since 2004. The three total resurfa
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combination has been used in 1,649
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Table HT2: Primary Conventional Tot
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Table HT6: 10 Most Common Femoral C
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Table HT8: 10 Most Common Femoral C
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Table HT10: 10 Most Common Acetabul
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Table HT12: 10 Most Common Primary
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Primary Conventional Total Hip Repl
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Table HT19: Primary Conventional To
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Figure HT18: Cumulative Percent Rev
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Primary Total Resurfacing Hip Repla
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Table HT39: Primary Total Resurfaci
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Table HT48: Yearly Cumulative Perce
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Figure HT34-43: Cumulative Percent
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Primary Total Resurfacing Hip Repla
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REVISION HIP REPLACEMENT This repor
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REVISION HIP REPLACEMENT 1/9/1999 -
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‘Revision of Known Primary’ Hip
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Table HR10: Outcomes of ‘Revision
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knee increased from 29.4% in 2003 t
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Table KG2: Number of Knee Replaceme
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Table KG4: Primary Knee Replacement
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PRIMARY PARTIAL KNEE REPLACEMENT Th
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Effect of Age and Gender The risk o
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Primary Partial Resurfacing Knee Re
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Table KP6: Primary Patella/Trochlea
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Table KP12: Primary Unicompartmenta
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Primary Patella/Trochlear Knee Repl
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Figure KP11-14: Cumulative Percent
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decrease in use and now accounts fo
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Page 161 and 162: Figure KT5: Trends in Prosthesis Fi
Page 163 and 164: Table KT10: Primary Total Knee Repl
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Page 185 and 186: REVISION KNEE REPLACEMENT This repo
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Page 189 and 190: Figure KR1: Trends in Usage for Rev
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Page 193 and 194: Table KR10: Outcome of ‘Revision
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Page 197 and 198: CEMENT IN HIP AND KNEE REPLACEMENT
Page 199 and 200: CEMENT IN HIP AND KNEE REPLACEMENT
Page 201 and 202: Table C3: Top 10 Cements used in Re
Page 203 and 204: Table C7: Yearly Cumulative Percent
Page 205: Table C11: Yearly Cumulative Percen
Page 209 and 210: Table M5: Mortality following Prima
Page 211 and 212: Appendices APPENDIX 1 Glossary of S
Page 213 and 214: APPENDIX 2 Patient Consent and Conf
Page 215 and 216: INTRODUCTION - about the Registry A
Page 217 and 218: APPENDIX 5 ICD-10-AM Codes PRIMARY
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Hip and Knee Arthroplasty - Surface Hippy Guide to Hip Resurfacing

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