ABSTRACT
Acute locking of the joint in a replaced knee joint is very rare. This report describes an acute locking episode of a revised modular total knee replacement, occurring more than 2 years after surgery. A disengaged screw from the modular femoral component had lodged in the joint at the inferior pole of the patella and required urgent arthroscopic removal. There was no subsequent failure of the stem-condylar junction, nor loosening of the femoral component.
Subject(s)
Arthroplasty, Replacement, Knee/adverse effects , Knee Prosthesis/adverse effects , Prosthesis Failure , Aged , Arthroplasty, Replacement, Knee/instrumentation , Arthroscopy , Bone Screws/adverse effects , Device Removal/methods , Foreign-Body Migration/etiology , Foreign-Body Migration/surgery , Humans , Male , Reoperation , Treatment OutcomeABSTRACT
We have reviewed 106 patients after treatment for spontaneous rupture of the calcaneal tendon, and assessed the clinical results including the power of plantarflexion. In patients treated within 48 hours of injury the result was very similar in conservatively and in operatively treated patients. The incidence of major complications was higher after operation (17%) than in those treated conservatively (4%). Patients who were treated more than one week after injury, however, had an inferior result with respect to power of plantarflexion after conservative management. It is therefore recommended that calcaneal tendon rupture is treated conservatively with a plaster in full equinus when it is diagnosed within 48 hours of injury, and by operation when diagnosis has been delayed for more than one week.
