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Table 3 Factors predicting (indication for) total hip replacement (THR)

From: Prognostic factors for progression of osteoarthritis of the hip: a systematic review

Prognostic factor

Studies

Associations

Best-evidence synthesis

Patient variables

 No association

  Body mass index

Strong evidence for no association

 

2 low risk of bias cohorts [16, 37]

5 cohorts [20, 39, 50, 51, 67]

No, no

No, no, no, negative, positive

  Female

Moderate evidence for no association

 

3 low risk of bias cohorts [16, 34, 37]

5 cohorts [20, 39, 50,51,52]

No, positive, no

No, no, no, no, no

  Lower educational level

Moderate evidence for no association

 

1 low risk of bias cohort [16]

1 cohort [39]

No

No

  Western or White ethnicity

Moderate evidence for no association

 

1 low risk of bias cohort [16]

1 cohort [39]

No

No

  Alcohol consumption

Limited evidence for no association

 

1 low risk of bias cohort [16]

No

 Conflicting evidence

  Higher age at baseline

Conflicting evidence

 

3 low risk of bias cohorts [16, 34, 37]

5 cohorts [20, 39, 50, 51, 67]

No, positive,no

No, positive$, no, no, positive

Disease characteristics

 Faster or more progression

  Lower global assessment (self-reported) at baseline

Moderate evidence for faster or more progression

 

1 low risk of bias cohort [37]

2 cohorts [39, 50]

Positive

Positive, positive

  Previous use of NSAIDs

Limited evidence for more progression

 

1 low risk of bias cohort [37]

Positive

 No association

  Longer duration of symptoms at baseline

Moderate evidence for no association

 

1 low risk of bias cohort [37]

1 cohort [19]

No

No

  Having another disease (comorbidity)

Moderate evidence for no association

 

1 low risk of bias cohort [16]

1 cohort [39]

No

No

  Morning stiffness

Moderate evidence for no association

 

1 low risk of bias cohort [16]

1 cohort [51]

No

No

  Use of pain medication at baseline

Moderate evidence for no association

 

1 low risk of bias cohort [16]

1 cohort [19]

No

No

  Presence of Heberden’s or Bouchard’s nodes

Moderate evidence for no association

 

1 low risk of bias cohort [16]

2 cohorts [50, 51]

No

No, no

  Previous intra-articular injection in the hip

Limited evidence for no association

 

1 low risk of bias cohort [37]

No

 Conflicting evidence

  More limitations in physical function at baseline

Conflicting evidence

 

3 low risk of bias cohorts [16, 34, 37]

2 cohorts [19, 39]

Positive, positive, no

No, no

  More pain at baseline

Conflicting evidence

 

3 low risk of bias cohorts [16, 34, 37]

4 cohorts [19, 39, 50, 51]

Conflicted$$, positive, positive

Positive, no, positive, no

  Painful hip flexion (active or passive)

Conflicting evidence

 

1 low risk of bias cohort [16]

1 cohort [51]

Positive

No

  Painful hip internal rotation (active or passive)

Conflicting evidence

 

1 low risk of bias cohort [16]

1 cohort [51]

Positive

No

  Night pain at baseline

Conflicting evidence

 

2 cohorts [50, 51]

Positive, no

  Limited range of motion of flexion of the hip

Conflicting evidence

 

1 low risk of bias cohort [16]

2 cohorts [19, 51]

Positive

Positive, no

  Limited range of motion of internal hip rotation

Conflicting evidence

 

1 low risk of bias cohort [16]

2 cohorts [19, 51]

Positive

Positive, no

  Limited range of motion of external hip rotation

Conflicting evidence

 

2 cohorts [19, 51]

Positive, no

Chemical or imaging markers

 Faster or more progression

  Higher K-L grade at baseline

Strong evidence for more or faster progression

 

2 low risk of bias cohorts [34, 37]

1 cohorts [51]

Positive, positive

Positive

  Superior or superolateral migration of the femoral head

Strong evidence for more or faster progression

 

2 low risk of bias cohorts [34, 47]

1 cohort [38]

Positive, positive

Positive

  Subchondral sclerosis

Strong evidence for more progression

 

2 low risk of bias cohorts [16, 47]

Positive, positive

  Statistical shape modeling

Moderate evidence that certain modes of SSM can predict progression

 

3 cohorts [11, 12, 12]

Positive, positive, positive

  Joint space narrowing at baseline

Moderate evidence for more or faster progression

 

1 low risk of bias cohort [16]

1 cohort [67]

Positive

Positive

 No association

  Cam-type deformity (alpha angle > 60°)

Limited evidence for no association

 

1 low risk of bias cohort [16]

No

 Conflicting evidence

  Erythrocyte sedimentation rate

Conflicting evidence

 

1 low risk of bias cohort [16]

1 cohort [51]

Positive

No

  Atrophic bone response (no osteophytes present)

Conflicting evidence

 

1 low risk of bias cohort [16]

2 cohorts [50, 51]

Positive

Positive, no

  Decrease in joint space width at baseline

Conflicting evidence

 

1 low risk of bias cohort [34]

1 cohort [51]

Positive

No

  Wiberg’s center edge angle (CEA)

Conflicting evidence

 

1 low risk of bias cohort [16]

1 cohort [20]

Negative

No

  1. $Exception: age ≥ 82 years showed a negative association with progression, compared to age ≤ 62 years
  2. $$Pain at baseline measured with NRS past week showed a statistically significant positive association with THR; pain at baseline measured with WOMAC pain showed no statistically significant association with THR