Knee crepitus can be from multiple causes. Painless crepitus can be ignored. So, I won't advice for crepitus knee treatment as such.. Crepitus from knee cap problems can be cured with hip and knee strengthening. Crepitus from cartilage irregularities or loose pieces often need minor keyhole surgery. Painful crepitus from arthritis is initially treated with physical therapy and surgery when therapy stops helping. 

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.

Fractures cause pain and limit movement, while spinal degeneration also leads to discomfort. Back pain and difficulty walking are common symptoms. However, hip replacement is a more urgent concern because it significantly impacts mobility. Addressing the hip first, as recommended by the surgeon, could improve the quality of life by alleviating discomfort and mobility issues.

It looks like you may have an ingrown toenail. When a toenail grows into the skin instead of over it, it can cause pain, redness, and swelling. Sometimes, it can make your whole foot feel funny or like a tendon is pulled. To help with this, soak your foot in warm soapy water and gently raise the nail. If it’s really sore, see a podiatrist for help.