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Table 3 Specialist referral and waiting list prioritisation instruments, levels and scores for THA and TKA

From: Determinants of demand for total hip and knee arthroplasty: a systematic literature review

CAHTA* CPAC** WCWLP***
Criteria Level Score Criteria Level Score Criteria Level Score
Severity of disease (clinical and radiological exploration) Moderate 0 Pain on examination None 0    
  Severe 18   Mild 6    
     Moderate 15    
     Severe 30    
    Other abnormal findings None 0 Abnormal findings on physical exam None/mild 0
     Mild 2   Moderate 5
     Moderate 5   Severe 9
     Severe 10    
    Multiple joint involvement No 0    
     Yes, affected joints with moderate severity 4    
     Yes, severe involvement 10    
Pain Mild 0 Degree of pain None 0 Pain on motion None/mild 0
  Moderate 17   Mild 4   Moderate 13
  Severe 33   Mild to moderate 6   Severe 20
     Moderate 9    
     Moderate to severe 14    
     Severe 20 Pain at rest   
Probability of recovery Moderate 0       
  High 4       
Difficult in doing ADL Some difficulty 0 Time walked Unlimited 0 Ability to walk without significant pain Over 5 blocks 0
  Great difficulty 10   31-60 min. 2   1-5 blocks 4
  Unable to do most ADL 20   11-30 min. 4   Less than 1 block 8
     2-10 min. 6   Household ambulatory 13
     2 < min. or indoors only 8    
     Unable to walk 10    
    Other functional limitations None 0 Other functional limitations (ADL) None 0
     Mild 2   Mild 2
     Moderate 4   Moderate 4
     Severe 10   Severe (unable to do most activities) 10
Limitation on ability to work No/does not work 0 Ability to work, give care to dependents or live independently Not threatened or difficult 0 Ability to work, give care to dependents or live independently Not threatened but more difficult 0
  Yes 10       
     Not threatened but more difficult 4   Threatened but not immediately 7
Has someone to look after the patient Yes 0       
  No 9   Threatened, but not immediately 6   Immediately threatened 10
Be a care-giver No 0       
  Yes 6   Immediately threatened 10    
  1. *Catalan Agency for Health Technology Assessment [62]; **Clinical Priority Assessment Criteria [63].***Western Canada Waiting List Program [65] (asks about situation over the past three months).