HIGH FREQUENCY ULTRASOUND IN DETECTION OF KNEE MENISCAL TEARS

Hamna imdad; Humaira Anjum

HIGH FREQUENCY ULTRASOUND IN DETECTION OF KNEE MENISCAL TEARS

Hamna imdad, Humaira Anjum

Abstract

Introduction: Timely diagnosis of meniscal pathology is vital for determining type and timing of treatment, as well as prognosis for return to function. Ultrasonographic examination of the knee shows promise for being an effective diagnostic tool for assessing meniscal pathology with the potential to overcome many of the shortcomings of MRI.

Objective: To determine the diagnostic accuracy of high frequency ultrasound in the diagnosis of Meniscal Injuries keeping arthroscopy as a gold standard.

Study Settings: Radiology Department, Khyber Teaching Hospital Peshawar.

Study Duration: From 03-05-2018 to 03-11-2018

Materials and Methods: This study was conducted in the Department of Radiology, Khyber Teaching Hospital, Peshawar. Through a Descriptive Cross Sectional Study Design, a total of 125 cases suspected of having meniscal injury were included in the study in a consecutive manner and subjected to high frequency ultrasound followed by arthroscopy for the confirmation of meniscal injuries.

Results: The mean age of the patients was 36.7 + 9.2 years. We had 71.2% males & 28.8% females. The mean BMI of the study sample was 23 + 2.1 kg/m². On HFUS we observed meniscal injury in 73.6% of patients compared to 60% on follow up arthroscopy. On applying the formulae for calculation, sensitivity of meniscal injury was found to be 81.3% and specificity 38%. The positive predictive value of the HFUS was 66.3% and negative predictive value was 57.6%.

Conclusion: High frequency ultrasound has an acceptable sensitivity and specificity for the detection of meniscal injuries. As such, it is a useful radiological marker for diagnosis of meniscal injuries in adults and further studies are recommended to confirm its usefulness.

Key Words: High frequency ultrasound (HFUS), arthroscopy, knee, menisci, meniscal injuries.

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