i injured my leg in car accident pain when i get up from sitting and after standing?
you are mostly suffering a posterior horn of medial meniscial tear. it could happen after accidents or direct blunts of knees. i recommend seeing a physiotherapist or follow a program of strengthening quadriceps and stretching of hamstring muscles. knee mobilization. a knee mri can prove it. also if your knee gives way or locks can be confirming signs without mri.