What are the best treatment options for a completely disrupted ACL ligament?

I suggest you consult with an orthopedic specialist right away. This injured ankle may have damaged the joint, which led to a throbbing pain. During this time, you may relieve the pain by applying ice to the affected area; taking antinflammatory medicine and keeping your leg elevated. But these are only short-term fixes, which would require an official diagnosis and treatment from a specialist.

Take your mother to a doctor or Ayurvedic practitioner, before starting any new medication or supplement like Sandhi Mitra Vati. This is particularly crucial for patients with pre existing conditions, like diabetes, and considering potential interactions or contraindications. 

It's good that your leg is still functioning well—that’s a good sign! You might feel symptoms like pain, numbness, or tingling. The most common causes are accidents or falls. The usual treatment involves rest, possibly wearing a brace and physical therapy. With proper care and rest, you'll likely recover well. Make sure to follow your doctor’s advice.

Yes, Electro acupuncture has given great results in treating foot drop.
Foot drop is mobility impairment of an ankle, foot and toes which causes foot drop. It is usually caused by a stroke.
Acupuncture point along with electro stimulation, combined with Moxibustion ( passing heat) showed significant improvement in the condition of the patient.
Acupuncture helps in improving motor function in patients with foot drop. Some physical exercises ( at later stages) will be given which will also help in correcting the foot drop completely.

Regarding what to expect 5 months after knee replacement - If there are no complications then you can work freely as per your wish.

But after knee replacement, some patients do not recover as quickly as others. Consider the following:

• Patients who conducted knee-strengthening activities before surgery have a better chance of recovering faster.
• It may take longer recovery time for those patients who are older, smoke, or have other medical concerns.

Note: Although deviations from the "normal" recovery timeframe is not always expected, but such fluctuations are usually acceptable as long as the patient, doctor, and physical therapist continue to collaborate in the pursuit of a complete recovery.

The maximum lengthening achievable is around 8-10 cm for the femur bone and 6-8 cm for the tibia bone. The amount of limb lengthening a person can gain through surgery varies according to the individual's initial height, the type of surgery, desired lengthening etc.

At 5 months after knee replacement surgery, patients can expect to have significantly reduced pain and improved mobility compared to the pre-surgical state. However, complete recovery may take up to a year or more. Regular physical therapy, exercises, and follow-up appointments with the doctor are necessary to ensure the best possible outcomes.