Core Strengthening Exercise- Straight Leg Raised With Toes Turned Outward, repeat 10 times, twice a day.
Hams Stretching- lie straight, take the leg up, pull the feet towards yourself, with a elastic tube or normal belt. repeat 10 times, twice a day.
Quadriceps Exercises- Lie straight, make a towel role and put it under the knee, press the knee against the role, hold it for 20 secs. Repeat 20 times twice a day. This will help relieve some pain.
Treatment will depend on amount of impaction, if significant it may need arthroscopic surgical disimpaction with or without bone grafting. Please see an orthopaedic surgeon in your city for evaluation.