ligament injuries around ankle (sprain) takes time to heal and swelling usually persist for 2-3 months.you can wear ankle grip or ankle binder while playing or prolonged walking. ankle grip will strengthen ligaments and compression provided by it, will reduce swelling.keep limb elevated on pillow during sleeping. if there is pain, you can take a mild analgesic such as ibuprofen .For pain between heal and arch, toe stretching exercises will be beneficial . Hope this helps. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.