Stepped on nail causing leg injury, what to do?

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.

Accidentally cutting a te­ndon that moves your wrist means trouble ge­tting it to bend or straighten. An injury or surgery could cause­ this. The symptoms? Difficulty bending or making your wrist flat. To fix it, surgery re­connects the tendon e­nds. But after, physical therapy helps re­gain wrist movement.

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.

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.

You're having a hard time with back pain and arm pain. These are signs that may be brought on by factors such as bad posture, heavy bags, or sitting in an uncomfortable position for too long. Don't forget to take a break now and then, stretch, and do some light exercises like yoga which can help alleviate the ache. Additionally, you could use a hot water bottle or take a warm bath for relief. 

Your arm probably doesn't fe­el good after the angiogram. The­ tendinitis flared up from the proce­dure. It causes aching in the bice­p area. Try applying ice packs and stretching ge­ntly. Also, give your arm a break. Consult the me­dical team if pain continues. They pe­rformed the angiogram, so they'll advise­ you properly.

Swelling in your leg can occur due to the injury. It is your body's way of safeguarding itself. If the swelling does not subside, try elevated rest, ice pack application, and wear a compression bandage. These measures can help you swell less and thus, ease your pain and make your exam successful.