Isolated patellofemoral osteoarthritis.

Isolated patellofemoral osteoarthritis is now recognised to be more common than previously thought. The features and management are reviewed, including the various surgical options in symptomatic patients. The evidence base for managing patellofemoral osteoarthritis is behind that for the tibiofemoral joint.

A prospective study of the diagnostic potential of the knee tunnel view radiograph in assessing anterior knee pain.

The aim of this comparative study was to examine the potential advantage of the tunnel view radiograph over a series of weight bearing antero-posterior (AP), lateral and skyline radiographs. The study population consisted of 240 subjects with knee pain aged 19 to 93 years. A total of 309 knees had a weight bearing AP in extension, lateral, skyline and tunnel view radiographs.

Subcutaneous thigh fat necrosis as a result of tourniquet control during total knee arthroplasty.

The use of a pneumatic tourniquet in total knee arthroplasty has been linked to complications caused by local tissue hypoxia. Fat necrosis is a rare condition that presents as an ill-defined subcutaneous lesion. The clinical features resemble that of a lipoma but histological appearance is characteristic.