Yes, sounds right. On my second jump at airborne school I had a non-displaced fracture of the posterior malleolus. They put on a full leg plaster cast, bent at the knee (because, said the doctor "if I don't bend your knee you damn airborne soldiers will try and walk on it"). Welcome to crutches.
Key was "non-displaced" so the bone stayed where where it belonged, it was just cracked.
After about two weeks they cut off the big cast and replaced it with a "short leg with walker" (knee length plaster cast with a rubber heel implanted in the bottom of the cast).
About two weeks later I had a followup, and after an x-ray the verdict was: "No fracture visible at this time."
The short leg cast came off, and that was that. Treatment circa 1972. Maybe 40 days start to finish.
So I suspect you are looking at the same thing, just don't do anything to displace the bones while they knit back together.
Then slowly build up walking/running. Hit the gym for your upper body, just no squats, calf raises, etc. Bench press, lat pulldown, etc. Extra calcium couldn't hurt.
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Oh yeah, and I had to finish up my three qualifying airborne jumps at Ft. Campbell and mail the manifests back to Ft. Benning to get my jump wings, which is why -- stop me if you have heard this before -- I have alway bragged of getting my jump wings by correspondence course.
