To the Editor: A workman installing wall-to-wall carpeting in one of our homes, and another doing the same work in our office, described bilateral pain and unilateral effusion of the knee, which required multiple arthrocenteses. We noted that such workers strike a “knee kicker,” used to stretch the carpet, with the suprapatellar area of their knees. Subsequently, the steward of a carpet-layers union reported that members had required knee surgery, evacuation of knee effusions, and treatment of repeated joint infection. These entities appear to resemble beat knee1 or housemaid's knee,2 reported previously among workers who kneel. Recently, Swedish investigators.
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