Summary and Conclusion
The knee joint is one of strongest and important weight-bearing joint comprising of two condylar joints (between the femoral and corresponding tibial condyles); and a saddle joint (between the patella and the patellar surface of the femur). The tibiofemoral articulations are separated by articular cartilages and menisci; with little contributions from cruciate ligaments. These are collectively seen on frontal radiograph as a radiolucent area between the bony tibial and femoral condyles .Its injury lead to disability Conflicting with daily activities for individuals, including walking, running, sitting and standing with substantial economic, social and psychological effects.
The most chronic disabling diseases of knee joint is a degenerative cartilage diseases like Osteoarthritis (OA).
The measurement of the distance between the distal femur and the proximal tibia (joint space width), is an indirect way of measuring cartilage thickness; this has become a reproducible tool for the assessment of progressive knee cartilage degenerative conditions and valuable in the evaluation of disease modifying therapies for Osteoarthritis
The aim of this work was to Determines the normal reference values of knee joint space width on computed radiographic images of normal Egyptian adults. and Correlate the result with side, age, gender, weight and body mass index( BMI).
Materials and methods :This study was carried out on two hundred and fifty living human Egyptian individuals of both sexes The individuals was grouped according to age into five groups Group 1:from 15 to