Diagnostic Value of Weight Bearing CT for Detecting Meniscal Tears

Study Objectives: Aim 1 Establish the accuracy of WBCTa and MRI for diagnosing knee cartilage and meniscal lesions in both surgical and non-surgical participants. Hypothesis 1: Pre-operative cartilage and meniscal scoring on WBCTa is more accurate than MRI, in comparison with arthroscopic assessment. Aim 2 Establish the accuracy of WBCTa for detecting persistent and recurrent meniscal root and radial tears not detected by MRI 6 months after meniscal repair (defined by diastasis of the repair or meniscal extrusion ≥3mm). Hypothesis 2: Six months following meniscal repair, WBCTa detects persistent and recurrent meniscal root and radial re-tears not detected by MRI. Study Type and Design: This cross-sectional, observational study will compare WBCTa with MRI to evaluate rate of detection of meniscal and cartilage lesions. The inter-rater reliability of WBCTa readings also will be assessed.