Court Square Capital Partners LP’s Physiotherapy Holdings Inc., which provides outpatient rehabilitation and sports-injury therapy, filed for bankruptcy protection with creditor support for a restructuring plan, Bloomberg News reported yesterday. The Exton, Pa.-based company listed debt of as much as $500 million and assets of as much as $1 billion in documents filed yesterday in bankruptcy court. Nearly 50 affiliates also are seeking court protection. Physiotherapy’s restructuring plan is supported by all of the company’s senior secured lenders and 99.7 percent of its bondholders, though terms of the plan were not immediately available.