Toronto's No. 4 starter was confident at the time that there wasn't any serious damage in the area, but he was still able to breathe a sigh of relief after the MRI exam didn't reveal any structural issues.
"Always the first thing they look at when it's in that area is the ligament," Johnson said. "Everything looks really good. I just have to get out there and start throwing."
The results mean that Johnson should be able to avoid a stint on the 15-day disabled list. His next scheduled day to start would be next Thursday against the Red Sox, but whether he'll be able to go on that day is still up in the air.
With an off-day on Monday, the Blue Jays have some flexibility to push back Johnson's outing another day or two, but a definitive timetable won't be set until the righty resumes throwing.
"I don't know; we haven't even talked about that until I play catch," Johnson said. "Then we'll kind of figure out the schedule from there. I'll come in [on Sunday], see how it's feeling and then go from there.
"I'll start playing catch either [Sunday] or Monday and then just kind of take it from there. Probably catch, then a side [session], couple of days of catch and then pitch."
Johnson has made four starts for the Blue Jays this season but is still searching for his first win. He is currently 0-1 with a 6.86 ERA, having struck out 19 and walked nine in 19 2/3 innings.
Gregor Chisholm is a reporter for MLB.com. Read his blog, North of the Border, and follow him on Twitter @gregorMLB. This story was not subject to the approval of Major League Baseball or its clubs.