The Study Of The Clinic Value In The Diagnosis Of Knee Synovial Osteochondromatosis With The Combination Of X-ray And Ultrasound

Objective To discuss the diagnostic value of the combination of X-ray andultrasound in knee synovial osteochondromatosis (SO).Methods A controlled study was made in51cases with knee synovialosteochondromatosis proved by surgery and pathology to sum up the differences ofthese three methods (X-ray, ultrasound, the combination of X-ray and ultrasound) inrevealing the SO nodules and secondary bone and joint lesions.Results The ultrasound identification rate (93/98) of cartilaginous nodules wasmuch higher than that of plain X-ray (0/98), there was evident difference between them(χ2=176.971，P<0.05). The ultrasound identification rate (489/545) of the calcificnodules around the joints was much higher than that of plain X-ray (403/545), there wasevident difference between them (χ2=45.645，P<0.05). The X-ray identification rate(12/15) of the calcific nodules deep under the joints was much higher than that ofultrasound (0/15), there was evident difference between them (χ2=20，P<0.05). Theidentification rate (634/658) of the combination diagnosis method of all the SO noduleswas much higher than that of X-ray (415/658) and ultrasound (582/658), there wasrespectively evident difference between them (χ2=225.35, P<0.05；χ2=29.264, P<0.05).20secondary bone and joint lesions were revealed by X-ray, only10by the method ofultrasound, there was evident difference between them (χ2=4.64，P<0.05). Based on theresults of the combination diagnosis method,53operations were taken to pick up thejoint mice and cut off the synovial capsules,the future results of the patients after theoperations were good.Conclusions: The diagnostic coincidence and nodule identification rate wereevidently improved by the combination method which had great clinic value and wouldlower the cost and get more information helpful to diagnosis and treatment of SO.