Intra-articular pressure and rheumatoid geodes (bone 'cysts').

Unusual geodes ('bone cysts') in rheumatoid arthritis.

Intra-articular ganglion cysts of the knee.

A ganglion is a cystic mass with myxoid matrix that occasionally occurs within muscles, tendons, and menisci. A ganglion cyst within the knee is very rare, with few reports to be found. We are reporting eight cases of a ganglion within the knee joint. Our cases include two ganglia in the infrapatellar fat pad which have not been previously reported. Ganglion cysts do not have specific symptoms....

Intra-articular pressure in rheumatoid arthritis of the knee. I. Pressure changes during passive joint distension.

In any compartment with stiff walls the excess pressure of fluid within is determined by a combination of the volume of fluid and the elasticity of the walls. The elastance of the space as a whole can be represented as a change in pressure for unit change in volume (dP/dV or mm. Hg/ml.). It follows that within the knee joint higher pressures will develop in the presence of effusions and when th...

Intra-articular steroid therapy in rheumatoid arthritis.

The introduction of steroid preparations into joint cavities has become a routine method of treating some cases of rheumatoid arthritis. Murdoch and Will (1959a, b) have drawn attention to the persistence of prednisolone trimethyl acetate (P.T.M.A.) in the joint cavity and to its, apparently, purely local effect when administered in this way. Since then, Triamcinolone (T.C.A.), Dexamethasone (D...

Intra-articular rheumatoid nodules of the knee.

Rheumatoid nodules commonly occur at the elbow where subcutaneous tissue is subject to recurrent pressure against bone. They have also been reported in several other sites, such as in the flexor tendon sheaths, in the pulp of the fingers and adjacent to ribs (Johnson, Kersley and Airth 1970), where their presence may lead to attrition, rupture or erosion of adjacent structures. They may also oc...