Quentin opened the 2012 season season on the disabled list after undergoing arthroscopic surgery on his right knee to repair a torn meniscus in March.
The idea of replacing the complicated Schmidt corrector plate with an easy to manufacture full aperture spherical meniscus lens (a meniscus corrector shell) to create a wide field telescope occurred to at least 4 optical designers in early 1940s war-torn Europe, including Albert Bouwers (1940), Dmitri Dmitrievich Maksutov (1941), K. Penning, and Dennis Gabor (1941).
A medical examination later showed that he suffered two tears in his Meniscus, in his ACL and MCL, and he subsequently underwent surgery to repair the damaged knee.
Maksutov telescope, catadioptric telescope with a meniscus corrector invented in 1941 by Dmitri Dmitrievich Maksutov
He was scheduled for tryouts with the Colorado Rapids and in an indoor soccer match the night before tryouts he blew out his knee requiring surgery on his ACL and meniscus.
After playing only 3 of the first 14 games of the 2013–14 season, Kalabane suffered a meniscus tear at his knee during training and underwent surgery at Acibadem Fulya Hospital.
He almost never missed a game, except in 1947, when he had to go to rehabilitation after a knee meniscus operation.