![Belgian knee and sports injury specialist Marc Martens shows a model of a knee at Apra AZ Monica Clinic in Antwerp after conducting surgery on Real Madrid midfielder Kaka's left knee August Belgian knee and sports injury specialist Marc Martens shows a model of a knee at Apra AZ Monica Clinic in Antwerp after conducting surgery on Real Madrid midfielder Kaka's left knee August](https://c8.alamy.com/comp/2CPARN4/belgian-knee-and-sports-injury-specialist-marc-martens-shows-a-model-of-a-knee-at-apra-az-monica-clinic-in-antwerp-after-conducting-surgery-on-real-madrid-midfielder-kakas-left-knee-august-5-2010-kaka-has-undergone-an-operation-and-could-be-ruled-out-for-three-to-four-months-the-clinic-said-on-thursday-reuterseric-vidal-belgium-tags-sport-soccer-health-2CPARN4.jpg)
Belgian knee and sports injury specialist Marc Martens shows a model of a knee at Apra AZ Monica Clinic in Antwerp after conducting surgery on Real Madrid midfielder Kaka's left knee August
![Real Madrid midfielder Kaka of Brazil (L), accompanied by his wife Caroline (R), leaves the Apra AZ Monica Clinic in Antwerp August 6, 2010 after an operation on his left knee. Kaka Real Madrid midfielder Kaka of Brazil (L), accompanied by his wife Caroline (R), leaves the Apra AZ Monica Clinic in Antwerp August 6, 2010 after an operation on his left knee. Kaka](https://l450v.alamy.com/450v/2cparn7/real-madrid-midfielder-kaka-from-brazil-leaves-the-apra-az-monica-clinic-after-an-operation-on-his-left-knee-in-antwerp-august-6-2010-kaka-has-been-operated-by-belgian-doctor-marc-martens-specialized-in-sport-injury-and-could-be-ruled-out-for-three-to-four-months-the-clinic-which-carried-out-the-surgery-said-on-thursday-reuterseric-vidal-belgium-tags-sport-soccer-2cparn7.jpg)
Real Madrid midfielder Kaka of Brazil (L), accompanied by his wife Caroline (R), leaves the Apra AZ Monica Clinic in Antwerp August 6, 2010 after an operation on his left knee. Kaka
![Real Madrid midfielder Kaka of Brazil (L), accompanied by his wife Caroline (R), leaves the Apra AZ Monica Clinic in Antwerp August 6, 2010 after an operation on his left knee. Kaka Real Madrid midfielder Kaka of Brazil (L), accompanied by his wife Caroline (R), leaves the Apra AZ Monica Clinic in Antwerp August 6, 2010 after an operation on his left knee. Kaka](https://c8.alamy.com/comp/2CPM2K2/real-madrid-midfielder-kaka-of-brazil-l-accompanied-by-his-wife-caroline-r-leaves-the-apra-az-monica-clinic-in-antwerp-august-6-2010-after-an-operation-on-his-left-knee-kaka-has-undergone-an-operation-on-his-left-knee-and-could-be-ruled-out-for-four-months-his-surgeon-said-on-thursday-he-was-examined-in-belgium-by-knee-and-sports-injury-specialist-marc-martens-who-carried-out-a-half-hour-arthroscopic-operation-on-thursday-morning-reuterseric-vidal-belgium-tags-sport-soccer-2CPM2K2.jpg)