As per the imaging results, it appears that there is a situation called basilar invagination that presses the brain stem on the superior spinal cord, thus causing the formation of a condition called compressive myelopathy. The squeezing action can result in numbness and poor coordination of the body. In addition, the fact that they have degenerative disc disease at C2-C3 and C3-C4 might also be the cause of the nerve root compression. This pain, tingling, or weakness in the arms may occur. You must meet with your doctor so that the best treatment plan which may consist of, physical exercise, drugs or surgery to unburden the spinal cord if necessary can be discussed. It is not something you can overlook if you aim to prevent further complications and have a better quality of life.

A compression fracture i.e. a vertebral compression fracture is characterized by back pain
- patients are advised analgesic drugs, take rest wear brace.
- Acupuncture combined with medications produced positive outcomes in such patients which includes pain reduction, improved daily living activities of a patient.
Acupuncture analgesic points help in alleviating pain to a great extent. Local back points and the corresponding acupuncture points help to relax a patient to a great extent. 
- Acupuncture helps in improving bone strength, bone metabolism, bone mineral density.
Regular acupuncture sessions improves the quality of life of patients with compressed fracture.
Acupuncture sessions would be regular initially but can be reduced as per patients response and a scan after 3 months would be advised to discuss further course of action.

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 might have had a pneumothorax, which happens when air gets into the space between your lung and chest wall. This can occur with a sudden chest injury or the rupture of a tiny air sac. The swelling in your armpit could be connected to this. To receive appropriate care which may include releasing pressurized air by draining it out to facilitate lung expansion.

If you have any bruising and are worried about infection there are some things to look out for. An infected bruise may become more swollen, red, warm, or painful. If you notice these signs then it could be infected. Gently clean the bruise, apply a clean dressing, and keep an eye on it. If in doubt, get it looked at. 

You might have costochondritis. This is when the cartilage in your ribs gets inflamed, which usually causes pain and tenderness. It may be related to weight loss and sometimes comes on after an illness. To help relieve the pain, you can do some gentle stretching, use heat packs, or take over-the-counter painkillers such as ibuprofen.

At 13 years old, it's absolutely okay to start incorporating dumbbell exercises into your routine! It can actually be a great way to build strength and stay healthy. However, it's essential to use the right weight and proper form to avoid any injuries. As long as you start with lighter weights, focus on technique, and don't overdo it, you should be just fine. Dumbbells won't stunt your growth or harm your health if used correctly. If you're new to this, maybe have a coach or parent guide you initially. 

You may have a broken toe. Dropping something heavy on the toe or stubbing it hard can cause a broken toe. Symptoms of a sprained toe include pain, bruising, and difficulty moving the toe. To be sure, you should get an X-ray at a clinic or hospital. Icing, resting, and keeping the toe safe from injury will give relief to the pain.