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* ORTON Orthopaedic Hospital, Invalid Foundation, Helsinki,
Clinisport Sportsmedicine, Turku,
Social Insurance Institution, Research and Development Centre, Turku,
|| Unit for Sports and Exercise Medicine, Institute of Clinical Medicine, University of Helsinki, Helsinki, Finland
Address reprint requests to Jyrki A. Kettunen, PhD, ORTON Orthopaedic Hospital, Invalid Foundation, Tenholantie 10, FIN-00280 Helsinki, Finland
Background: Little information is available on the long-term outcome of jumper’s knee, a common problem among athletes.
Purpose: Our aim was to determine the 15-year prognosis of jumper’s knee.
Study Design: Prospective case control.
Methods: The prognosis for jumper’s knee was studied using two groups: athletes with jumper’s knee and nonsymptomatic control athletes. At baseline, all subjects participated in standardized clinical examinations and measurements, and 15 years later they were asked to respond to a questionnaire.
Results: Twenty athletes with jumper’s knee and 16 athlete control subjects responded (response rate 74% and 84%, respectively). The jumper’s knee group reported significantly more knee symptoms according to their Kujala score and more knee pain after repeated squatting. Fifty-three percent of the subjects in the jumper’s knee group (9 of 17) reported that they had quit their sports career because of their knee problem, compared with 7% of the control athletes (1 of 14). Patellar height was associated with knee symptoms at follow-up.
Conclusion: Jumper’s knee causes mild but long-lasting symptoms after an athletic career.
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