Sprained my ankle 1.5 month ago, rested for a month.doctor confirmed it is sprain.have hard swelling around the round bone(talus?) that is not reducing

Ice it: Use an ankle brace when walking and go for physical therapy.

See below: Try to use a warm compress on the area and massage it. Range of motion should also help to loosen it up.

I would : Have it re examined. If bone is involved there is potential to be more serious. What grade of sprain was it?

You may need MRI: With a hard swelling around the talus you may have suffered a deeper injury like an osteochondral injury. This is an injury to the dome of the talus. This is not seen on xray and needs to be evaluated with MRI or ct.

Not uncommon: It is not uncommon to experience swelling in the affected limb for up to 6 months after an ankle sprain. The lymphatic system sometimes takes that long to equilibrate. You might have some consolidation of fluid around your ankle. If it hurts or is concerning, follow up with your doctor.

MRI : Recommend getting an MRI as you may have deeper pathology and may need surgical treatment.

Swelling takes long: Sprained ankle means torn ligament(s). As such, ligaments take aproximately 2-6 weeks to heal. Other tissue is also torn including bone easels. The bleeding from these as well as the disruption of normal blood flow and the healing process itself causes swelling. The swelling can last for many months well after the sprain itself has healed up to a year. See your orthopedist if you are concerned.

Stress Fracture: If pain, and limited mobility continues consider second opinion MRI to confirm tear of medial or lateral collateral ligaments. 10-15% of the ankle injuries may be serious tears that might require surgery.

Get reevaluated: Swelling is not uncommon to have following an ankle sprain and depending on the severity of the sprain can last up to 3 months. But a follow up x-ray should be taken to rule out a fracture that may have been missed.

Swelling: After a month it is time to see a podiatrist or orthopedic surgeon for x-rays and evaluation before starting physical therapy. Swelling is the way the body tells you something is not right.

Consider recheck: The swelling immediately from a sprain may mask an underlying fracture associated with the injury. Consider getting rechecked and having an xray. See a foot/ankle specialist.

Swelling: Swelling that persists calls for re-evalution. Seek the assistance of your podiatrist. Good luck.

Further evaluation : Most lateral ankle sprains heal within 6 weeks. If symptoms persists or worsen, an evaluation with possible further imaging studies is recommended.

Chronic changes: This could be due to some chronic inflamed tissues of the ankle joint, or a traumatic ganglion cyst formation - to name a few. Have a specialist check it out.

Ankle sprain: Rest is not the answer for an ankle sprain. Active rehab is important after determination of extent of injury. 6 weeks is not usual for continued pain and swelling if a grade 2 injury. A talor dome injury may have been missed though an should follow up about now if not able to be more functional or if continued pain.