This study is to show the clinical effect of Korean medicine integrated treatment for medial collateral ligament tear with bone contusion by traffic accident. The patients were treated using Korean medicine integrated treatment including acupunture, pharmacoacupunture and herbal medication. The effect of treatment was measured by Western Ontario and McMaster Universities Arthritis Index (WOMAC), EuroQol-5 Dimension Index (EQ-5D) and Numeric Rating Scale (NRS). After treatment, case 1 improved WOMAC from 94 to 24, EQ-5D from -0.056 to 0.72, and NRS from 10 to 2. Case 2 showed an improvement in symptoms from WOMAC 91 to 14, EQ-5D from 0.077 to 0.862, NRS from 10 to 2.5. In addition, as a result of follow-up about 5 months after each onset, case 1 showed a further improvement with WOMAC 0, EQ-5D 0.95 and case 2 WOMAC 7, EQ-5D 0.913. These results suggest that Korean medicine integrated treatment might be a possible therapeutic option for the medial collateral ligament tear with bone contusion by traffic accident.