The discomfort you're experiencing might be connected to your meniscus tear surgery. Sometimes after surgery, our bodies can surprise us by reacting in a way that is not expected. I suggest supportive footwear, practicing targeted stretches for the foot, and taking a vitamin D supplement. 

You might be having a rough time with your quadricep tendinitis. The symptoms you're going through, like pain moving from your knees to your thighs, can be a challenge. This kind of injury can be caused by overusing your legs or not warming up properly before exercise. To help with this, try doing some gentle stretches and avoiding activities that worsen the pain. As well, applying ice packs and elevating your legs can provide some relief. 

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. 

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. 

A toenail injury sounds unple­asant. Ripping off a nail may lead to pain and bleeding. Bandaging he­lps keep the are­a clean, or leaving it uncovere­d if bleeding is minimal. Cleanline­ss prevents infection. Howe­ver, if severe­ pain, redness, or swelling occurs, se­eking medical attention is wise­.

For severe pain in your left arm, it's essential to seek medical attention promptly. Pain in the left arm can be caused by muscle strain, injury, nerve compression, or even heart related issues. Consult a doctor for proper evaluation.