Can MRI results explain my back and neck pain?

Avascular necrosis (AVN) is a condition in which the blood supply to the bone is disrupted causing the bone tissue to die. Treatment for AVN depends on the stage of the condition and the location of the affected bone. Its advisable to consult with an orthopedic surgeon for treatment options. The doctor may recommend physical therapy, medication, or surgery depending on the severity of the condition.

The movements which cause dislocation after hip replacement are:

a. Bending and leaning forward 
b. Sitting on low chairs, low bed, low toilets.
c. Crossing the knees
d. Lifting knee higher than your hip.

Yes its generally possible to undergo surgery on the left hand after a mastectomy. The decision to proceed with surgery will depend on your mother's condition and the recommendations of her dcotors.

Prevention of worsening of degenerative disc disease is by decreasing the stress on the degenerated discs. Weight loss and avoidance of weight lifting and high impact activities decrease the stress and pain.

Joint pain after unprote­cted sex is concerning. It could signal a se­xually transmitted infection (STI). Common symptoms include discomfort, swe­lling, and stiffness in the joints. Getting te­sted for STIs is crucial to identify any potential infe­ctions. Moving forward, practice safe sex consiste­ntly. 

If you are experiencing lower abdomen pain while doing perineal exercises, it may be because you are overexerting yourself or performing the exercises incorrectly. Consult a physical therapist to assess your technique and ensure that you are performing the exercises safely.

You have patellofemoral pain syndrome. This condition causes pain around or under the knee cap, which can spread to the side of the knee. It's often due to overuse, weak muscles, or improper knee-cap positioning. Exercises to strengthen leg muscles and supportive sports shoes can help. A key part of treatment is avoiding activities that worsen the pain.