AVN or avascular necrosis of hip joint is problem due to decrease in blood supply of the hip joint. This can happen due to following reasons,
1. Alcohol
2. Steroids 
3. Blood problem like sickle cell anemia
4. Neck femur fracture
5. Ankylosing spondylitis
Patient can not walk for long time and can not sit on floor or run. MRI and X rays help in diagnosis of AVN.
in first stage we can do medical treatment . Patient should avoid alcohol and steroids and also avoid walking for long hours or heavy weight lifting.
In second and third stage core decompression or drill hole technology can be used for hip pain. Drill hole can give you pain relief but it is not permanent cure. 
For permanent cure hip replacement is best option. Uncemented ceramic on poly is best hip for most of the patients with long life. 
Patient can do all activities after surgery. There is no bed rest and walking is allowed from next day.
Cemented hip is used when patient has weak bones.
You can discuss with your dr about your hip problems. You can log in to this websites and ask your hip related problems with Dr naveen Sharma free of cost.

Hello , ACL ligament is important part of the knee stablity. With the current technology ACL ligament treatment is getting succesful most of the time. I am sharing you some of the important point you should remember so that you do get best results.

1. Always get surgery done at best places where ACL is done daily. You can take information from youtube or facebook or google. Do some research. Remeber that your nearby or most costly hospital is not always the best place.

2. Your knee should have no swelling and bending should be more than 120 to 130 whwn you plan our surgery.

3. Always you should get best quality implant . Do not compromise on poor quality implants or cheap free schemes.

4. Do not delay surgery. After 3 week you can get it done . Some time when surgery is delyed it can cause cartilage damage and meniscus tear also. 

5. Do exercises as told by your dr. If you try to do it fast it can make your graft weak. If it is done very slow it can make your knee stiff. try to stay connected with your physio.

6. Take proper supplements like calcium and cissus .

7. Avoid going in to game to early. Many graft fails as patient rush in to games too ealry.

You can ask your health related questions by Dr on this website. You will get answers of all health related issues free of charge . Also you can get more information about your problems by reading questions and answers of other patient and dr conversations. It is like having social media of health .so create your account and start getting medical information free of cost