ABSTRACT
102 water polo players were interviewd about the injuries caused by water polo. 13% of the subjects had knee pain at least once a year. 73% of which were chronic cases. For 24 players, clinical examinations, including X-ray examination, A-P knee laxity measurement, isokinetic strength measurement of knee muscles, and photo analysis of the vertical egg beater kick motion were performed to elucidate the cause of knee pain.<BR>The summary of the results were as follows;<BR>1. The most common site of knee pain was the medial portion of the knee joint.<BR>2. Protrusion of the medial femoral epicondyle and sharpning of the tibial intercondylar eminentia as well as spur formation of the superior pole of the patella were observed in most subjects.<BR>3. Injured subjects had stiff knees and weak knee extensor muscles.<BR>4. The vertical egg beater kick motion must be the main factor of the painful knee.
ABSTRACT
102 water polo players were interviewd about the injuries caused by water polo. 13% of the subjects had knee pain at least once a year. 73% of which were chronic cases. For 24 players, clinical examinations, including X-ray examination, A-P knee laxity measurement, isokinetic strength measurement of knee muscles, and photo analysis of the vertical egg beater kick motion were performed to elucidate the cause of knee pain.<BR>The summary of the results were as follows;<BR>1. The most common site of knee pain was the medial portion of the knee joint.<BR>2. Protrusion of the medial femoral epicondyle and sharpning of the tibial intercondylar eminentia as well as spur formation of the superior pole of the patella were observed in most subjects.<BR>3. Injured subjects had stiff knees and weak knee extensor muscles.<BR>4. The vertical egg beater kick motion must be the main factor of the painful knee.