A STUDY ON THE ASSESSMENT OF RADIOGRAPHIC CHANGES IN OSTEOARTHRITIS AMONG STUDY SUBJECTS

Dr. Ramesh Jain, Dr Harshad Ruprela

Abstract


Introduction: Our objective was to assess radiographic features of osteoarthritis (OA) and to determine which is more closely associated with knee pain and hence might be used as a radiographic definition of OA in the community. To evaluate joint space width in normal subjects.

Methods:  Sample size was 395 rounded to 400  subjects from a case-control community study of knee pain  underwent AP standing and midflexion skyline radiographs. Joint space width, measured by metered calliper to 0.1 mm, and graded individual features of OA (osteophyte 0–3, narrowing 0–3, sclerosis 0–1, cysts 0–1) were assessed in all three compartments Subjects were categorised as having knee pain by a positive response to question about pain . Cases were taken from all the sections , Departments , Health Centres of the Medical College

Results:  Joint space width measurements was to within ±0.4 mm (95% CI for limits of agreement); ê values for grading were >0.7. A number of  Subjects were without knee pain too . In these radiographically normal knees, mean joint space width varied according to sex but did not decrease with age. A definition based on the presence of osteophyte >grade 1 in any compartment was more efficient at predicting pain than definitions based on either measurement or grading of joint space; there was no clear threshold of joint space loss at which the likelihood of pain substantially increased.

Conclusion:  Among men and women in the community, osteophyte is the radiographic feature that associates best with knee pain. Radiographic assessment of both TFJ and PFJ should be included in all community studies. Joint space loss is not a feature of asymptomatic aging, and there is not a biological cut off for joint space width below which the likelihood of knee pain markedly increases

 


Keywords


Osteoarthritis , osteophyte , TFJ , PFJ

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