When you have an ACL tear, it is because the ligament in your knee is overextended. In addition to resting and doing some light exercises, you should ice your knee. Although PRP or stem cell therapy could be useful for a speedy recovery, consulting with your healthcare provider on these treatments is the best way to determine the optimal care for your case. 

Soft tissue tumors are small growths that can form in muscles, tendons, or other tissues. You might feel a lump under your skin, but why they appear is often unknown. Fortunately, most of these tumors are not cancerous. If removal is needed, doctors typically perform excision surgery, where they cut out the tumor.

It’s common to experience back pain in your age group because of several factors. It may be due to rapid growth or carrying a heavy backpack. Some indications for this condition may include tenderness, rigidity, or uneasiness. To solve this problem, don’t carry heavy bags and do exercises that will tighten your muscles. Also, be mindful of how you sit or stand. If the discomfort persists then it would be wise to inform an adult about it.

According to the symptoms that you have mentioned, the most likely diagnosis to your muscle pain and fatigue is Myofascial Pain Syndrome. Which produces muscle pain and tenderness, similar to fibromyalgia, is among the symptoms of this condition. Muscles' trigger point gets developed, causing pain in different areas due to the compression against the nerves. The muscle would then become loosened up or weaker. The key features of this disorder include physical therapy sessions, injections of trigger point pressure, and a certain kind of drug guidance to manage stress.

Back and neck pain can have various causes, including poor posture, muscle strain, injuries, degenerative conditions, and stress. Consult with a specialist for personalized recommendations for treating your pain. In the meantime trypracticing good posture, gentle stretching exercises, applying heat or cold packs, and stress management techniques may offer some relief.

Yes they are both combination medications, such as the one you mentioned (oxycodone 5 mg with 325 mg of acetaminophen), are commonly prescribed for pain relief. 

A cracking sound heard during knee flexion may raise a red flag. It might be caused by the rupture of scar tissue or movement of the joint. However, don't be frightened. Initially, it is not likely that the repaired ACL has been torn again. Still, though, for your good, stay away from practices that hurt or cause any discomfort. Keep being careful, and maybe set up a visit with your surgeon to check that everything is okay.