For your knee pain, please visit an orthopedist. He will evaluate your condition to know the exact cause of knee pain. It can be caused due to sprains, arthritis etc. Based on the diagnosis and cause, a proper treatment will be suggested to you which can include physiotherapy, medications or surgery. 

You need to visit a doctor if the pain is excruitiating. They'll find the cause by performing physical exminationation and provide appropriate advice or treatment. Make sure to keep a record of when the pain occurs and any accompanying symptoms.

• Older individuals are more prone to falls and fractures. The incidence of ankle fractures in older patients is high and severe in some cases. The treatment is difficult and complicated in nature due to presence of comorbidities such as diabetes, obesity, hypertension and poor bone quality.
• Treatment goals include: Stability of the joint, ability of the patient to perform daily activities independently and minimizing complications associated with fracture and other comorbid conditions.

RICE is a part of the Non-operative management of ankle fracture in older patients which includes:

R: The importance of rest cannot be overstated. In order for the fracture to heal faster limit yourself from further pressure on the foot. 

A cast will most likely be worn to keep the foot and ankle immobile.  In case of severe soft tissue swelling, a cast may be required for the first three to five days. The brace must be worn for six weeks in order to allow the fracture to heal. Cast fixation with off-loading is advised for poor bone quality depending on the radiography report.  

Ice: For reducing the swelling and inflammation, apply ice to the region for 20 minutes at a time.

 And continue further for every 40 minutes.

Compression: Wrapping the area in a bandage helps to reduce swelling.

Elevation: To assist reduce inflammation, lift your foot and ankle slightly above the level of your heart.

The X-ray report suggests that your mother has a right femoral neck fracture with osteoporosis of the bones. Furthermore, she has mild to moderate spondylotic changes in her lumber spine. Your mother should see an orthopedic specialist to assess and determine the treatment plan for her fracture/osteoporosis.

Your problem might be a torn meniscus, which is a cushion inside the knee. It can tear from twisting, bending, or wear and tear. Symptoms include pain, swelling, popping sounds, and the knee locking. You can treat it with rest, ice packs, keeping your leg raised, and doing physical therapy exercises. Surgery may be needed for severe tears.

According to the symptoms you are going through, it is likely that you bruised your knee or your muscles or tendons around it got injured. This might present as a combination of swelling, pain, and immobility of the leg Lie down while putting your feet up, apply a cold compress to the area, stretch your leg, and wrap it with a long elastic bandage to reduce swelling. If the pain persists, replays, or intensifies, or you find it hard to bear its weight, go to the orthopaedist.

Your ganglion cysts aren't often painful, though sometime­s annoying or movement-limiting. Since yours vanishe­d naturally, surgery might not be require­d anymore. However, inform your doctor about this de­velopment so they can re­assess if the operation is still ne­cessary or not.