The world number one had tests on the injury, which wrecked his chances in Sunday's Australian Open final, in Barcelona on Tuesday followed by the treatment before returning to his native Mallorca to rest, the spokesman said in an emailed statement.
"Next Monday he will have further tests to evaluate the progress of his recovery and to see if he can gradually start training again," he added.
Nadal still intends to play in the clay event in Buenos Aires starting on Feb. 10, followed by the tournament in Rio de Janeiro, also on clay, and the hard court Masters events at Indian Wells and Miami.
Nadal lost to Swiss Stanislas Wawrinka in the Australian Open final, which prevented him drawing level on 14 grand slam singles titles with American Pete Sampras, three short of record holder and great rival Roger Federer.
He needed lengthy treatment at the start of the second set, hit back to win the third but Wawrinka eventually captured his debut slam with a 6-3 6-2 3-6 6-3 triumph.
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