Table 1

 The mean “minimum” JSW (mm) taken from knee radiographs of a normal community cohort

Knee compartmentWomen (mm)Men (mm)
One hundred and twenty five subjects (knee pain negative with no osteophyte): 86 women (172 knees), 39 men (78 knees), mean age 58 years. Results from both right and left knees were combined for each compartment.
Medial TFJ4.765.20
Lateral TFJ4.825.92
Medial PFJ4.886.34
Lateral PFJ4.886.16