Objective: This study was aimed to determine anthropometric measurements of knee joint among healthy Mongolian population and identify FML (Femur Medial Lateral), TML (Tibia Media Lateral), PML (Patella Medial Lateral), PAP (Patella Anterior Posterior), FAP (Femur Anterior Posterior) and TAP (Tibia Anterior Posterior). Methods: This cross-sectional study included 100 participants. We measured femoral, tibial and patellar dimensions using X-ray. Result: A total of 100 participants (44 male, 56 female participants) enrolled in this study. Age was ranged 20-59 and average age was 38 ± 9. Average FAP was 70.6 ± 1.22 mm in male and 66.9 ± 3.93 mm in female. Average TML in male was 85.6 ± 1.27 mm and 79.1 ± 0.8 mm in female. Average TAP was 60.1 ± 4.87 mm in male and 55.7 ± 4.96 in female. Average PAP was 22.5 ± 2.83 mm in male and 23.8 ± 2.43 mm in female. Average PML was 50.2 ± 1.45 mm in male and 46.8 ± 4.09 mm in female. Knee anthropometric measurements were statistically different in gender (P < 0.0002). Conclusion: Participants average FML was statistically lower than Asian and European people and FAP was statistically higher than them.

Objective: This study aimed to identify correlations of laboratory test results and knee joint function between pre-and post-operation of knee joint replacement surgery. Methods: The study covered 60-75 aged 50 patients who had operated with knee replacement surgery. 25 patients were male and another 25 patients were female. We compared laboratory test results of preand 3 rd , 7 th and 14 th day of post-operation. Moreover, pre-operation knee joint function was compared with 3 rd , 7 th , 14 th and 30 th day of post-operation. Furthermore, we investigated the relationship among WBC, hemoglobin and function tests. Pre-and post-operative knee joint function tests were conducted by WOMAC (The Western Ontario and McMaster Universities Osteoarthritis), VAS (Visual Analogue Scale), TUG (Time up and Go) score, and MMT (Muscle Manual Test). Results: In pre-operation, patients' average WBC was 6.447 ± 2.115 cells/µL, monocyte was 6.554 ± 3.101 cells/µL, lymphocyte was 31.177 ± 9.512 cells/µL and C-reactive protein was 0.6205 ± 0.922 mg/dL. In 3 rd day of post-operation, WBC was 8.901 ± 2.869 cells/µL, monocyte was 4.881 ± 2.332 cells/µL, lymphocyte was 17.048 ± 9.702 cells/µL and C-reactive protein was 4.2762 ± 2.293 mg/dL. There was a statistically significant difference reported on pre-and post-operation pain, stiffness and daily activity (P < 0.001). On the other hand, patients' post-operative TUG score was significantly higher than pre-operative TUG scores (P < 0.0001). Furthermore, hemoglobin, red blood cell and TUG score of the 3 rd day of post-operation were raised up and they were statistically significant (P < 0.036