Is my exercise-related waistband pain muscular?

The injury that you have described might be a muscle strain or a cervical nerve compression. You should consult an orthopedic doctor or a neurologist for proper diagnosis and therapy. If the pain lasts or increases, do not ignore it.

Tibia and fibula fractures involve­ broken lower leg bone­s. Pain, swelling, and inability to move the le­g characterize symptoms. Falls or accidents commonly cause­ these injuries. Tre­atment involves casts or surgical repair of bone­s. Ice, rest, and leg e­levation help relie­ve pain and swelling. Recove­ring full strength and mobility often require­s physical therapy.

This could indicate a serious ankle injury, possibly a fracture. It's crucial to seek immediate medical attention to determine the extent of the damage and receive proper treatment. Rest, elevate your leg, and apply ice in the meantime, but prioritize getting medical help as soon as possible for an accurate diagnosis and appropriate care.

It is bit difficult to remove femur nail after 7 years but it can be done and better to take opinion in person. Yes this will heal after removal. 

Next step: consult orthopaedic surgeon doctor

For pain relief in degenerative disc disease, 
As per alternative medicine therapy, pain is due to imbalance in the body I.e. acid/ alkali imbalance or yin or yang imbalance
So first step is to give balancing acupuncture points and then target points, when 50% pain reduction is achieved, moxibustion, cupping, electro stimulation and seed therapy, diet tips and physical exercise is given

The spine surgery (L3, L4 fusion) and fracture­d tailbone might be causing your persiste­nt discomfort. Let's look closely at your MRI scans to figure out what's going on. I sugge­st consulting an expert spine doctor for a thorough che­ck-up and tailored treatment plan.

You could be having turf toe, which is typical when doing sports such as football. Turf toe occurs when the big toe joint is injured, and can cause pain. Symptoms are swelling, pain, and limited movement of the toe. To assist in the healing process, try to rest your foot, use ice packs, and wear supportive shoes. Ignoring the pain, and consulting with the family doctor is a better option.