Table 1

Modification of Kellgren and Lawrence grades used in this study

Grade Abnormalities Criteria
1OSPMinor osteophytes
3JSN, OSP, SSC, CYSTJSN + 2 others
4JSN, OSP, SSC, CYSTJSN + 3 others
5JSN, OSP, SSC, CYST, FDAs grade 4 + FD
  • OSP=osteophytes, JSN=joint space narrowing, SSC=sub-chondral sclerosis, CYST=sub-chondral cyst formation, FD=femoral head deformity.