Why is there Lachman in my knee 2 months after ACL surgery?

You suffer from back and leg pain as well as numbness and excess sleepiness. These symptoms can be caused by a nerve block in your lower back which can produce discomfort and strange sensations in your leg. Your doctor has prescribed some medicines to you to aid in managing pain and inflammation. Adhere to them, and take a break from your doctor if there are any changes or concerns. 

Wearing diapers at night can cause you knee pain, so it's better to avoid it. When you are experiencing knee pain, your mobility is restricted which makes it hard for you to sleep. However, wearing diapers will not help. Knee issues arise either because of injury, arthritis, or muscle strain. To help, use pillows to support your knees while sleeping and also do gentle doctor-recommended exercises to strengthen your knee. Instead of only treating the pain, you should focus on the cause of the knee problem.

Given your age and history of osteoarthritis, it is most likely caused by the wear and tear on your joints. Losing some weight gradually with a healthy diet could relieve the pressure on the knees. Additionally, physical therapy may enhance flexibility while building up muscles around these areas. 

You might have costochondritis. This is when the cartilage in your ribs gets inflamed, which usually causes pain and tenderness. It may be related to weight loss and sometimes comes on after an illness. To help relieve the pain, you can do some gentle stretching, use heat packs, or take over-the-counter painkillers such as ibuprofen.

Pus is a sign of infection; hence, your wound can be infected. The next steps are to keep clean areas, apply an antibiotic ointment, and cover them with a bandage. Moreover, you need to talk to a doctor to be sure the wound is healing well.