Mariam Yamin, Kahkashan Hameed, Kelash Kumar, Mahesh Kumar, Nazia Azeem.
To determine the frequency of Baker\'s cyst on MRI in patients with knee pain.
Professional Med J Jan ;30(12):1605-9.

Objective: To determine the frequency of Baker`s cyst in patients presenting with knee pain, considering MRI as imaging modality. Study Design: Descriptive, Cross-sectional study. Setting: Department of Radiology, JPMC, Karachi. Period: 03 January 2021 till 02 July 2021. Material & Methods: Total 113 patients presenting with knee pain for >4 weeks duration who were referred for knee MRI were selected in the study. Both male and female patients between 15-65 years included in the study. Post-surgical patients and those with contraindication to MRI were excluded from the study. MRI of effected knee was performed in every selected patient by using 1.5 Tesla MRI by placing the knee in extended position with slight external rotation to facilitate imaging. MR images were interpreted by one consultant radiologist for presence or absence of Baker`s cyst. Results: Patients of 15 to 65 years age were included in the study with mean age of 44.94 +- 6.69 years. Out of 113 patients, 65 (57.52%) were male and 48 (42.48%) were female with male to female ratio of 1.4:1. Mean BMI of patients was 27.45 +- 3.02 kg/m2. Mean duration of pain was 5.78 +- 2.30 months. In our study, 22 patients with knee pain were found to have Baker`s cyst on MRI with frequency of 19.47%. Conclusion: This study concluded that frequency of Baker`s cyst on MRI in patients with knee pain is quite high.

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