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Table 1 Definitions of subsets of symptomatic radiographic knee OA

From: Clinical features of symptomatic patellofemoral joint osteoarthritis

 

'Any OA'

'Moderate to severe OA'

PFJOA

Skyline K&L ≥2

Skyline K&L ≥3

 

OR

OR

 

Lateral osteophytes ≥1

Lateral osteophytes = 3

TFJOA

PA K&L ≥2

PA K&L ≥3

 

OR

OR

 

Posterior osteophytes ≥1

Posterior osteophytes = 3

  1. K&L Kellgren and Lawrence score; OA Osteoarthritis; PA Posteroanterior; PFJ Patellofemoral joint; TFJ Tibiofemoral joint
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Arthritis Research & Therapy

ISSN: 1478-6362

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