Resurfacing Lecture Slides 10-21-02 Incorrect Correct - - PowerPoint PPT Presentation

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Resurfacing Lecture Slides 10-21-02 Incorrect Correct - - PowerPoint PPT Presentation

Mar 21, 2023 259 likes •710 views

Resurfacing Lecture Slides 10-21-02 Incorrect Correct Placement-Dependence (Slight) Valgus Orientation Polyethylene Acetabular Component Metal Femoral Component Rosenthal-Biokeramik Ceramic Femoral Component ICLH Acetabular Component ICLH

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Resurfacing Lecture Slides 10-21-02

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SLIDE 2

Incorrect Correct

Placement-Dependence

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(Slight) Valgus Orientation

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SLIDE 4

Polyethylene Acetabular Component

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SLIDE 5

Metal Femoral Component

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SLIDE 6

Rosenthal-Biokeramik

Ceramic Femoral Component

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SLIDE 7

ICLH Acetabular Component

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SLIDE 8

ICLH Femoral Component

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SLIDE 9

Fibrous Metaplasia

Normal vs. Varus

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SLIDE 10

Steel Polyethylene Steel Ceramic

Fuyura Components

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SLIDE 11

Conceptual Metal on Metal Metal on Poly

Nishio Design

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SLIDE 12

Matching-Cups Principle

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Salzer Bioceramic

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Acetabular Reaming

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Femoral Head Shaping

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SLIDE 16

Ducheyne’s Porous Coating

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THARIES Component Thicknesses

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Design Trade-Offs

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Cup Fixation Evaluation

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Torque Testing

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Hemispherical Cylindrical

Sagittal Torque to Failure

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SLIDE 22

Hemispherical Cylindrical

Coronal Torque to Failure

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Femoral Acetabular

THARIES Geometrical Parameters

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Component Diameter (mm)

THARIES Sizing Considerations

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THARIES Working Dimensions

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THARIES Instrumentation

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SLIDE 27

THARIES Pre-Op Planning

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Causes of Notching

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Cemented Poly Metal Shell FEA Zonings

Acetabular Component Stresses

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10 MPa Tension Compression

Peri-Acetabular Stresses

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Wagner Cup FEA

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Attachment Variants

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mm

Relative Motion at Cup/Bone Interface

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3-d Cup FEA

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Interface Shear Interface Normal Cup Hoop

.05 MPa

Stress Distributions

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Fyhrie et al., 1988

Analysis Section Orientation

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Elastic Modulus Distribution

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  • 1.14
  • 1.78
  • 1.47

Normal Sliding Ingrown

Concave-Side Interface Compressive Stresses

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Normal Ingrown ±0.38 ±0.24

Concave-Side Interface Shear Stresses

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Normal Ingrown

Concave-Side Energy Stresses

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Normal Sliding Ingrown

  • 0.76
  • 1.12
  • 0.85

Convex Interface Compressive Stresses

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Normal Ingrown ±0.38 ±0.32

Convex Interface Shear Stresses

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Normal Sliding Ingrown

Convex-Side Energy Stresses

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Ti Co-Cr 1.0 0.5

200 100

Ep/Ec

Maximum Stress Shielding