When the needle is behind the patella, it is in the joint space. Just before reaching that stage, it should be possible to slide the patella over the femur freely from side to side, ensuring ...

Laboratory testing usually reveals a normal peripheral WBC with a moderately elevated ESR. [8,9] Analysis of the synovial fluid typically shows a WBC of <50,000/mm 3 with 50-60% neutrophils. []The ...

But the presence of synovitis, as shown on MRI as enhanced synovial thickening, was significantly linked with both pain (OR 1.8, 95% CI 1.2-2.8) and progression (OR 3.2, 95% CI 1.9-5.4), the ...

RA causes your synovial cells to increase, which causes thickening and inflammation. It’s the same with RA in your knees: Immune cells target the synovial membrane that lines your knee joint.

Radiographs of 77-year-old man, 11 years after primary total knee arthroplasty, who presented with asymptomatic effusion and minimal instability. (A) Preoperative anteroposterior radiograph. (B ...