1. Hip and Knee Osteoarthritis Toolkit Version 1: Research Project Integrating Shared Decision Making into Care of Patients with Knee Osteoarthritis: Proposed Patient Flow

2. TOTAL JOINT REGISTRY Phase I Patient Inclusion Criteria Using the Knee patient triage system, patients will be prospectively pre-selected if their clinic appointment is for: Known OA Consideration for TKA Previous knee surgery

3. TOTAL JOINT REGISTRY Phase I KNEE REGISTRY Initial Visit Data Personal data Knee Society Score SF-36 Co-morbidity data Decisional conflict scale (before and after video0 Knowledge verification (AFTER VIDEO0 All “pre-selected” Knee patients will complete tablet PC-based questionnaires Knee patients who are felt by MD to be candidates for TKR will be identified SHARED DECISION MAKING HALF Only half of patients will be randomly selected and asked to participate in Shared Decision Making process, the remainder will not STUDY GROUP CONTROL GROUP

4. TOTAL JOINT REGISTRY Shared Decision-Making Module Patients randomly selected for SDM module will be able to accept or decline Those who accept: Are enrolled into SDM clinical trial Answer questions via Tablet PC before and after watching decision aid about: Values influencing decision Decisional anxiety “Quiz” about comprehension of TKR-related issues

5. TOTAL JOINT REGISTRY Shared Decision-Making Module Patients randomly selected for SDM module will be able to accept or decline Those who decline: Are not enrolled into SDM clinical trial and do not watch decision aid (video about TKR) Are asked to answer: “Quiz” about comprehension of TKR-related issues Question about why they declined invitation for SDM