The Diagnostic Value of Flexor and Extensor Forces, in Meniscus Rupture Diagnosed Cases with MRI

Abstract

INTRODUCTION[|]Changes in the knee flexor and extensor strengths have not been thoroughly evaluated. When the forces decrease, there are disruptions in the knee joint balance. Could flexor and extensor strength measurements be used as diagnostic tools for meniscal tears?[¤]METHODS[|]In this study, 45 patients clinically prediagnosed with a meniscal tear and confirmed with MRI were the study group. Their other knees were the control group. New 45 healthy patients were made up a negative control group. In the control and negative control groups, MRI was not taken. The maximal strengths of all knees in Study and Control Group and a series of the negative control Group were measured using Nonius EnRaf R, kg unit and air pressure isokinetic exercise device. Other pathologies in the knees, the onset of pain, duration, age, and left and right differences were not evaluated. Statistical ROC analysis was carried out.[¤]RESULTS[|]There was a 17% of flexion and 30% of extension reduction in the knee with ruptured meniscus compared with intact knees. Both values were statistically significant (p<0.05). The mean knee flexor/extensor strength ratio in ruptured meniscus, patients was 0.687, while it was higher than 0.81 in other intact knees. As a result, the extension 32 units in 35 out of 45 patients, flexion 20 units in 36 out of 45 patients were affected, respectively, 35 out of 45 healthy knees were affected in other knees.[¤]DISCUSSION AND CONCLUSION[|]Change in muscle strengths can be used to confirm with a prediagnosed meniscus tear in knees. Measurements of many knee forces with other pathologies can be definitive and widespread in the diagnosis.. [¤]

Keywords

• diagnosis
• extensor strength; flexors strength; isokinetic device; meniscus tear.