I've broken my tibia twice and because it's recurring, I've tried to accumulate a bunch of notes on the subject in case it happens again:
• Many orthopedic doctors do NOT have the level of competency required to help you develop a solid plan of recovery (seek a doctor with specific tibial injury experience)
• Increase your Vitamin D intake as well as your calcium intake (some even say take Glucosamine to help your joints, which will assist your bones). Don't take more than 50% of the RDA for Vitamin D or calcium at any one point in the day (spread it out). Lay out in the sun for the Vitamin D if you can’t get enough through your diet.
• don't drink as much alcohol (studies suggest you’ll heal more slowly)
• ditch the caffeine for a while if you can (studies suggest you’ll heal more slowly)
• don't take any ibuprofen or other NSAIDs (many studies suggest they slow bone healing)
• beg your orthopedic doctor and/or insurance company for an expensive bone stimulator and use it daily to recover quickly (Smith & Nephew Exogen 4000 is supposedly one of the better ones)
• X-rays are highly ineffective in relation to tibial breaks/fractures. Sometimes they show evidence of "healing" but most often do not progress being made. Get an MRI and/or a CAT or bone scan. Sometimes a bone scan will show more than an MRI. If you have an orthopedic that just keeps giving you X-rays, find a new doctor or demand an MRI/bone scan, etc.
• Once you get out of the cast, considering picking up a pair of insoles with good cushion. I love Sorbothane Ultra-soles. There are threads on this debating which are the best.
• Swimming is just about the only truly safe activity you can do while recovering. However, even in some cases, this can be painful and/or not recommended. Whether or not you should bicycle is a controversy among docs. Most docs will say if it doesn’t hurt, it’s OK.
• A few weeks after your leg begins to feel normal, head to physical therapy. Be careful not to go to PT too early in the recovery process!
• Once you are out of the cast, ice your leg for 20 minutes 1-3 times a day. This is especially important after any physical activity or after physical therapy.
• You may want to get a “bone density test” to see if you have weak bones (which could have caused the issue)
• Make sure to get an MRI to confirm that you have fully healed. An X-ray is NOT sufficient.
Good luck!