The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.
Intrinsic Risk Factors for the Development of Patellar Tendinitis in an Athletic Population: A Two-Year Prospective Study
Abstract
Retrospective studies have suggested various factors that might cause a disposition to develop patellar tendinitis, but no prospective data exist to determine any relationships. The purpose of this study was to determine the intrinsic risk factors for the development of patellar tendinitis in an athletic population. Before the study, 138 male and female students of physical education were evaluated for anthropometric variables, leg alignment characteristics, and muscle tightness and strength parameters. During the 2-year study, 19 of the 138 students developed patellar tendinitis. In all cases the diagnosis was confirmed by the presence of a hypoechogenic nodular lesion in the proximal region of the patellar tendon. Univariate and stepwise discriminant function analyses were performed comparing the various measurements. These analyses revealed that the only significant determining factor was muscular flexibility, with the patellar tendinitis patients being less flexible in the quadriceps and hamstring muscles (P<0.05). The results of this study demonstrate that lower flexibility of the quadriceps and hamstring muscles may contribute to the development of patellar tendinitis in an athletic population. Therefore, the prevention of this condition in athletes should be focused on screening for and treating poor quadriceps and hamstring muscle flexibility.
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Cites
(1990) · Choice Reviews Online · doi:10.5860/choice.27-3338 · Cited by 35,305
Kupper, L. L., Hosmer, D. W., & Lemeshow, S. (1990) · Journal of the American Statistical Association · doi:10.2307/2290035 · Cited by 7,599
Garrett, W. E. (1996) · The American Journal of Sports Medicine · doi:10.1177/036354659602406s02 · Cited by 607
Reliability of Goniometric Measurements
Boone, D. C., Azen, S. P., Lin, C.-M., Spence, C., Baron, C., & Lee, L. (1978) · Physical Therapy · doi:10.1093/ptj/58.11.1355 · Cited by 560
Goniometric Reliability in a Clinical Setting
Rothstein, J. M., Miller, P. J., & Roettger, R. F. (1983) · Physical Therapy · doi:10.1093/ptj/63.10.1611 · Cited by 546
Achilles tendinitis and peritendinitis: Etiology and treatment
Clement, D. B., Taunton, J. E., & Smart, G. W. (1984) · The American Journal of Sports Medicine · doi:10.1177/036354658401200301 · Cited by 511
Khan, K. M., Bonar, F., Desmond, P. M., Cook, J. L., Young, D. A., Visentini, P. J., Fehrmann, M. W., Kiss, Z. S., O'Brien, P. A., Harcourt, P. R., et al. (1996) · Radiology · doi:10.1148/radiology.200.3.8756939 · Cited by 414
Flexibility and Its Effects on Sports Injury and Performance
Gleim, G. W., & McHugh, M. P. (1997) · Sports Medicine · doi:10.2165/00007256-199724050-00001 · Cited by 369
Horton, M. G., & Hall, T. L. (1989) · Physical Therapy · doi:10.1093/ptj/69.11.897 · Cited by 310
Mechanical factors in the incidence of knee pain in adolescents and young adults
Fairbank, J., Pynsent, P., van Poortvliet, J., & Phillips, H. (1984) · The Journal of Bone and Joint Surgery. British volume · doi:10.1302/0301-620x.66b5.6501361 · Cited by 303
Cited by
Prevalence of Jumper's Knee among Elite Athletes from Different Sports: A Cross-sectional Study
Lian, Ø. B., Engebretsen, L., & Bahr, R. (2005) · The American Journal of Sports Medicine · doi:10.1177/0363546504270454 · Cited by 908
Region specific patellar tendon hypertrophy in humans following resistance training
Kongsgaard, M., Reitelseder, S., Pedersen, T. G., Holm, L., Aagaard, P., Kjaer, M., & Magnusson, S. P. (2007) · Acta Physiologica · doi:10.1111/j.1748-1716.2007.01714.x · Cited by 377
Tendinopathy: Update on Pathophysiology
Scott, A., Backman, L. J., & Speed, C. (2015) · Journal of Orthopaedic & Sports Physical Therapy · doi:10.2519/jospt.2015.5884 · Cited by 196
Metadata
- Authors
- Witvrouw, E., Bellemans, J., Lysens, R., Danneels, L., & Cambier, D.
- Venue
- The American Journal of Sports Medicine
- Publisher
- SAGE Publications
- Published
- 2001-03
- Volume
- 29
- Issue
- 2
- Pages
- 190-195
- ISSN
- 0363-5465 (ISSN-L)
- 1552-3365
- OpenAlex
- W1777895714
- Cited by
- 302
- References
- 31
- FWCI
- 4.93
- Type
- journal article
- Language
- en
- Open access
- closed
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- Witvrouw, E., Bellemans, J., Lysens, R., Danneels, L., & Cambier, D. (2001). Intrinsic Risk Factors for the Development of Patellar Tendinitis in an Athletic Population: A Two-Year Prospective Study. The American Journal of Sports Medicine. https://doi.org/10.1177/03635465010290021201
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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