"I had all the symptoms of a broken leg, including loads of bone bruising, but it just didn't break," said Sackey.
"The X-ray showed the leg wasn't broken but a few more ounces of pressure would have broken it. It happened during the Ireland game - someone tackled Mike Tindall and his leg swung round and caught me.
"England tried their best to get me back fit but it just wasn't right. When I came back to Wasps, I got it re-evaluated and found out it was more serious than just a dead calf.
"I am still very sore but I should be fit for the weekend after next. I still think I can play my way back into the Lions squad.
"If I can get fit and start playing well again then there is a chance of getting in on the back of my form throughout the year."
The 29-year-old Sackey this week ran for the first time in training since the injury and is targeting Wasps' home game to Newcastle Falcons on April 5.