Some Assembly Required: Joint Replacements
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Some Assembly Required: Some Assembly Required: Joint ReplacementJoint Replacement
Richard J Friedman, MDRichard J Friedman, MDCharleston Orthopaedic AssociatesCharleston Orthopaedic Associates
Charleston, SCCharleston, SC
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Total Hip ArthroplastyTotal Hip Arthroplasty
Alternate bearing surfacesAlternate bearing surfaces MISMIS Hip resurfacingHip resurfacing
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Total Knee ArthroplastyTotal Knee Arthroplasty
State of the ArtState of the Art
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Total Shoulder ArthroplastyTotal Shoulder Arthroplasty
Reverse total shoulder arthroplastyReverse total shoulder arthroplasty
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Patient ManagementPatient Management
AnaesthesiaAnaesthesia Perioperative pain controlPerioperative pain control VTE ProphylaxisVTE Prophylaxis Perioperative planning and dischargePerioperative planning and discharge Long-term resultsLong-term results
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ArthroplastyArthroplasty
LatinLatin arth - jointarth - joint GreekGreek plastica - moldingplastica - molding
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Total Joint ArthroplastyTotal Joint Arthroplasty
First successful THA 1960First successful THA 1960 Many improvementsMany improvements Over 800,000 done annually in USAOver 800,000 done annually in USA Highly successful outcomesHighly successful outcomes
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Total Joint ArthroplastyTotal Joint Arthroplasty
OsteoarthritisOsteoarthritis Post-traumatic arthritisPost-traumatic arthritis OsteonecrosisOsteonecrosis Inflammatory arthritisInflammatory arthritis
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IndicationsIndications
PainPain DisabilityDisability Health statusHealth status AgeAge
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EvaluationEvaluation
HistoryHistory Physical ExaminationPhysical Examination RadiographsRadiographs CT, MRI, bone scan, blood testsCT, MRI, bone scan, blood tests
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Conservative TreatmentConservative Treatment
HeatHeat NSAIDNSAID Physical therapyPhysical therapy
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ExpectationsExpectations
Excellent pain reliefExcellent pain relief Improvements in ADLsImprovements in ADLs Increased physical activityIncreased physical activity
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Preoperative EvaluationPreoperative Evaluation
Medical clearanceMedical clearance TestsTests Blood donationBlood donation Weight lossWeight loss Dental EvaluationDental Evaluation Urinary evaluationUrinary evaluation Social planningSocial planning
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Alternate Bearing SurfacesAlternate Bearing Surfaces
THA in younger and higher-demand THA in younger and higher-demand patientspatients
Long-term fixation of metal implantsLong-term fixation of metal implants Long-term failure due to PE wear, Long-term failure due to PE wear,
osteolysis and aseptic loosening.osteolysis and aseptic loosening. Develop bearing surface that can Develop bearing surface that can
function at high level and prolong life of function at high level and prolong life of well-fixed componentswell-fixed components
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Ceramic THACeramic THA
Mid-term study has demonstrated Mid-term study has demonstrated efficacy and safety of a ceramic on efficacy and safety of a ceramic on ceramic bearing surface compared to ceramic bearing surface compared to the standard ceramic/PE surface.the standard ceramic/PE surface.
No failures or complications related to No failures or complications related to the bearing surfaces. the bearing surfaces.
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Ceramic THACeramic THA
Improved wear and biocompatibility Improved wear and biocompatibility with a ceramic/ceramic bearing surface with a ceramic/ceramic bearing surface may increase implant longevity. may increase implant longevity.
Further follow-up is indicated to Further follow-up is indicated to determine the long-term outcome.determine the long-term outcome.
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RehabilitationRehabilitation
FWB immediatelyFWB immediately Range of motion, strengthening Range of motion, strengthening
exercisesexercises Progress as quickly as possibleProgress as quickly as possible
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Minimal Invasive SurgeryMinimal Invasive Surgery
Single 3-4 inch incisionSingle 3-4 inch incision Two 2 inch incisionsTwo 2 inch incisions Shorter surgery timeShorter surgery time Less blood lossLess blood loss Quicker rehabilitationQuicker rehabilitation Improved functional outcomeImproved functional outcome
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Minimal Incision SurgeryMinimal Incision Surgery
Major marketing ployMajor marketing ploy No differences inNo differences in
– blood lossblood loss
– surgery time surgery time
– pain levelspain levels
– functional outcomesfunctional outcomes
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HipResurfacingHipResurfacing
Younger more active patientsYounger more active patients Higher expectationsHigher expectations Proven benefit/cost ratioProven benefit/cost ratio Continuing to push the envelopeContinuing to push the envelope
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Theoretical Advantages of Theoretical Advantages of Hip ResurfacingHip Resurfacing
Minimal bone resectionMinimal bone resection
Normal femoral loadingNormal femoral loading
Maximum proprioceptive Maximum proprioceptive feedbackfeedback
Restores natural anatomy :Restores natural anatomy :
offset, leg lengthoffset, leg length
anteversionanteversion
Minimal risk of dislocationMinimal risk of dislocation
Easier revisionEasier revision
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Resurfacing THAResurfacing THA
– Largest experience with Largest experience with BirminghamBirmingham
– Used globally since 1997 Used globally since 1997 with more than 100,000 with more than 100,000 implantedimplanted
– Approved by the FDA Approved by the FDA in March 2006in March 2006
– Corin 2000 marketed by Corin 2000 marketed by Stryker approved in Jun Stryker approved in Jun 20072007
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Typical CandidateTypical Candidate– Patients experiencing hip Patients experiencing hip
pain due to OA, RA, DDH pain due to OA, RA, DDH or AVNor AVN
– Adults under age 60 for Adults under age 60 for whom THA may not be whom THA may not be appropriate due to an appropriate due to an increased level of physical increased level of physical activityactivity
– Active adults over age Active adults over age 60 may be candidates, 60 may be candidates, depending on their depending on their bone qualitybone quality
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Patient Selection CriteriaPatient Selection Criteria
Hip resurfacing is most Hip resurfacing is most appropriate for appropriate for physically active physically active patients with good patients with good bone quality and bone quality and adequate femoral and adequate femoral and acetabular bone stock. acetabular bone stock.
Such patients will Such patients will generally be under the generally be under the age of 65.age of 65.
OAOA Strong Heavy MaleStrong Heavy Male Women < 50 years Women < 50 years Men < 60 yearsMen < 60 years High ExpectationHigh Expectation High activity levelHigh activity level
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IndicationsIndications
Primary Primary osteoarthritis.osteoarthritis.
Post traumatic OA.Post traumatic OA. Secondary OA, e.g. Secondary OA, e.g.
DDH, SCFE, DDH, SCFE, Perthes’ disease.Perthes’ disease.
AVN of the femoral AVN of the femoral head if remaining head if remaining bone stock is bone stock is adequate.adequate.
Inflammatory arthritis if Inflammatory arthritis if bone quality is adequate. bone quality is adequate.
Any patient with a Any patient with a deformity of the femur or deformity of the femur or hardware that would hardware that would prevent insertion of a prevent insertion of a stemmed femoral stemmed femoral component.component.
Patients with a high risk Patients with a high risk of dislocation.of dislocation.
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Conventional THAConventional THA
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Resurfacing THAResurfacing THA
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Key BenefitsKey Benefits
– Large head sizeLarge head size
– Alternate bearing Alternate bearing surfacesurface
– Bone conservationBone conservation
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Bone ConservationBone Conservation– Revises to a primaryRevises to a primary– If patients need If patients need
revision surgery, they revision surgery, they don’t get a revision don’t get a revision implantimplant
– The revision The revision procedure would be procedure would be the same THA they the same THA they would otherwise have would otherwise have receivedreceived
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Postoperative TherapyPostoperative Therapy
– Rehabilitation protocol Rehabilitation protocol similar to THA patientssimilar to THA patients
– Weight bearing as Weight bearing as toleratedtolerated
– Motion and Motion and strengthening exercises strengthening exercises and gradual and gradual progression to normal progression to normal activities.activities.
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Resurfacing SurvivorshipResurfacing Survivorship
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Resurfacing THAResurfacing THA
Quality of life issues.Quality of life issues. Conservative approach.Conservative approach. No bridges burned.No bridges burned. Careful patient selection.Careful patient selection. Meticulous surgical technique.Meticulous surgical technique.
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TKA State-of-the ArtTKA State-of-the Art Posterior cruciate retentionPosterior cruciate retention Posterior cruciate sacrificingPosterior cruciate sacrificing Both achieve 95%+ success at 10 yrsBoth achieve 95%+ success at 10 yrs Metal/PE articulationMetal/PE articulation
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QuickTime™ and a decompressor
are needed to see this picture.
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Reverse TSAReverse TSA
What is it?What is it? Why use it?Why use it? Who uses it?Who uses it? When should it be used?When should it be used? Where can it get you?Where can it get you?
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Shoulder Biomechanics Shoulder Biomechanics
arm weightarm weight= 5 kg= 5 kg
•Arm elevation means that Arm elevation means that
the deltoid must counteractthe deltoid must counteract
effect of arm weight effect of arm weight
•Arm elevation means that Arm elevation means that
the deltoid must counteractthe deltoid must counteract
effect of arm weight effect of arm weight
••TThe center of rotation ishe center of rotation is
located in the humeral headlocated in the humeral head
••TThe center of rotation ishe center of rotation is
located in the humeral headlocated in the humeral head
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Shoulder BiomechanicsShoulder Biomechanics
arm weightarm weight= 5 kg= 5 kg
A stable fulcrum is A stable fulcrum is created by the RCcreated by the RC
COR creates ideal COR creates ideal moment for deltoid moment for deltoid to elevate armto elevate arm
RC contributes to RC contributes to abduction >90abduction >90˚̊
A stable fulcrum is A stable fulcrum is created by the RCcreated by the RC
COR creates ideal COR creates ideal moment for deltoid moment for deltoid to elevate armto elevate arm
RC contributes to RC contributes to abduction >90abduction >90˚̊
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ProblemProblem
Massive rotator cuff tearsMassive rotator cuff tears Instability Instability Glenohumeral arthritisGlenohumeral arthritis
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PathologyPathologyPathologyPathology
WeaknessWeakness InstabilityInstability Incongruous Incongruous
joint surfacesjoint surfaces Bone lossBone loss
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Treatment ObjectivesTreatment ObjectivesTreatment ObjectivesTreatment Objectives
Restore stability to GH jointRestore stability to GH joint Provide smooth articulating surfacesProvide smooth articulating surfaces Replace bone lossReplace bone loss Optimize remaining cuff muscles, Optimize remaining cuff muscles,
restoring rotational strengthrestoring rotational strength
Restore stability to GH jointRestore stability to GH joint Provide smooth articulating surfacesProvide smooth articulating surfaces Replace bone lossReplace bone loss Optimize remaining cuff muscles, Optimize remaining cuff muscles,
restoring rotational strengthrestoring rotational strength
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Reverse TSAReverse TSA
Kessel, Kölbel, Fenlin, Gerard, Liverpool, Neer Kessel, Kölbel, Fenlin, Gerard, Liverpool, Neer & Averill& Averill
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Reverse TSAReverse TSA
Kessel, Kölbel, Fenlin, Gerard, Liverpool, Neer Kessel, Kölbel, Fenlin, Gerard, Liverpool, Neer & Averill& Averill
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Reverse TSAReverse TSAReverse TSAReverse TSA
No reliable surgical solution to restore No reliable surgical solution to restore anatomy prior to reverse TSAanatomy prior to reverse TSA
Unconstrained arthroplasty may Unconstrained arthroplasty may resurface arthritic humeral head but resurface arthritic humeral head but instability will remaininstability will remain
Prosthetic design with increased Prosthetic design with increased constraint can potentially help instabilityconstraint can potentially help instability
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Reverse TSAReverse TSA Semi-constrainedSemi-constrained Provides stable fulcrumProvides stable fulcrum Multiple options for center of Multiple options for center of
rotationrotation Ability to maintain anatomic Ability to maintain anatomic
center of rotationcenter of rotation Fixed angle central lag screw for Fixed angle central lag screw for
fixationfixation 4 locking 5.0mm peripheral 4 locking 5.0mm peripheral
screwsscrews
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IndicationsIndications
Glenohumeral OA with massive cuff tear.Glenohumeral OA with massive cuff tear. Failed cuff repairs with static instability.Failed cuff repairs with static instability. Massive irreparable rotator cuff tear.Massive irreparable rotator cuff tear. Post-traumatic arthritis w/wo static instabilty.Post-traumatic arthritis w/wo static instabilty. Malunited and nonunited fractures.Malunited and nonunited fractures. Primary fracture treatment in the elderly.Primary fracture treatment in the elderly.
No other satisfactory option available.No other satisfactory option available.
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IndicationsIndications Failed hemiarthoplasty.Failed hemiarthoplasty. Prosthetic instability.Prosthetic instability. Rotator cuff insufficiency.Rotator cuff insufficiency. Glenoid bone reconstruction.Glenoid bone reconstruction. Rheumatoid shoulder.Rheumatoid shoulder. Neoplasm.Neoplasm.
No other satisfactory option available.No other satisfactory option available.
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Surgical LessonsSurgical Lessons
Place glenoid baseplate low and tilt Place glenoid baseplate low and tilt inferiorly.inferiorly.
Inferior capsular release important.Inferior capsular release important. Bone graft on glenoid behind Bone graft on glenoid behind
baseplate for wear.baseplate for wear.
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Postoperative ProtocolPostoperative Protocol Much less intense than conventional TSA.Much less intense than conventional TSA. Sling for 4-6 weeks depending on Sling for 4-6 weeks depending on
indication.indication. Passive pendulums and Codmans followed Passive pendulums and Codmans followed
by AAROM.by AAROM. After sling, often ADLs and no formal PT.After sling, often ADLs and no formal PT.
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Clinical ResultsClinical Results
Pain significantly less.Pain significantly less. ASES, Constant scores increased.ASES, Constant scores increased. Patient satisfaction high.Patient satisfaction high.
• Sirveaux JBJS 2000, Frankle JBJS 2005, Werner Sirveaux JBJS 2000, Frankle JBJS 2005, Werner JBJS 2005, Boileau JSES, 2005JBJS 2005, Boileau JSES, 2005
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ComplicationsComplications
Must separate primary and revision Must separate primary and revision cases.cases.
Overall 16% complication rate. Overall 16% complication rate. Revision rate 3X primary rate.Revision rate 3X primary rate. Rates similar to conventional TSA.Rates similar to conventional TSA. Humble learning curve.Humble learning curve.
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ComplicationsComplications
InstabilityInstability Infection Infection Postoperative fracturePostoperative fracture
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SurvivorshipSurvivorship
Survivorship 98% at 7 years with Survivorship 98% at 7 years with RSP.RSP.
Survivorship 91% at 10 years with Survivorship 91% at 10 years with Delta III.Delta III.
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Patient ManagementPatient Management
AnaesthesiaAnaesthesia Perioperative pain controlPerioperative pain control VTE ProphylaxisVTE Prophylaxis Long-term resultsLong-term results
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AnaesthesiaAnaesthesia
GeneralGeneral RegionalRegional Blocks - sciatic, femoral, lumbar Blocks - sciatic, femoral, lumbar
plexus, interscaleneplexus, interscalene
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Pain ManagementPain Management
Multimodal pain managementMultimodal pain management Anaesthesia blocksAnaesthesia blocks Cox 2 NSAIDsCox 2 NSAIDs Long acting narcoticsLong acting narcotics
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Venous ThromboembolismVenous Thromboembolism
All THA and TKA need prophylaxisAll THA and TKA need prophylaxis Guidelines recommend LMWH, Guidelines recommend LMWH,
warfarin or anti-Xa agents.warfarin or anti-Xa agents. Minimum 2 weeksMinimum 2 weeks Consider extended prophylaxis Consider extended prophylaxis
(4weeks) in patients with increased (4weeks) in patients with increased risk factorsrisk factors
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Long-term resultsLong-term results
Cost-benefit ratio highCost-benefit ratio high Quality of life issuesQuality of life issues THA 85% doing well at 20 yearsTHA 85% doing well at 20 years TKA 90% doing well at 20 yearsTKA 90% doing well at 20 years TSA >90% doing well at 20 yearsTSA >90% doing well at 20 years
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Thank YouThank You