{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T04:24:59Z","timestamp":1791087899079,"version":"4.1.0"},"reference-count":53,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2012,2,8]],"date-time":"2012-02-08T00:00:00Z","timestamp":1328659200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2012,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>The purpose of this prospective study was to describe the variability in leg muscle power and hop performance up to 2 years among patients following ACL reconstruction and specifically to illustrate the effects of various criteria for an acceptable level of muscle function.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Eighty\u2010two patients (56\u00a0men and 26 women) with a mean age of 28 years, who underwent ACL reconstruction using either hamstring tendons (\n                      <jats:italic>n<\/jats:italic>\n                      = 46) or a patellar tendon (\n                      <jats:italic>n<\/jats:italic>\n                      = 36), were assessed pre\u2010operatively and 3, 6, 12 and 24\u00a0months post\u2010surgery with a battery of three lower extremity muscle power tests and a battery of three hop tests.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Leg symmetry index (LSI) values at group level ranged between 73 and 100% at all follow\u2010ups. When the tests were evaluated individually, patients reached an average LSI of \u226590% at 24\u00a0months. The success rate at 24\u00a0months for the muscle power test battery, that is, patients with an LSI of \u226590% in\n                      <jats:italic>all three<\/jats:italic>\n                      tests, was 48 and 44% for the hop test battery. The success rate at 24\u00a0months for both test batteries on\n                      <jats:italic>all six muscle function tests<\/jats:italic>\n                      was 22%. The criterion of an LSI of \u226580% resulted in 53% of the patients having an acceptable level on all six tests, while with a criterion of an LSI of \u2265100%, none of the patients reached an acceptable level.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>At group level and in single muscle function tests, the muscle function outcome 1 and 2 years after ACL reconstruction is satisfactory in the present study and on a par with the results presented in the literature. However, when using more demanding criteria for a successful muscle function outcome, using batteries of tests or increasing the acceptable LSI level from \u226590% to \u226595% or \u2265100%, the results are considered to be poor. It is suggested that this should be taken into consideration when presenting results after ACL rehabilitation, deciding on the criteria for a safe return to sports, or designing rehabilitation programmes after ACL reconstruction.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of evidence<\/jats:title>\n                    <jats:p>Prognostic prospective cohort study, Level I.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00167-012-1912-y","type":"journal-article","created":{"date-parts":[[2012,2,7]],"date-time":"2012-02-07T06:46:15Z","timestamp":1328597175000},"page":"1143-1151","source":"Crossref","is-referenced-by-count":163,"title":["Variability in leg muscle power and hop performance after anterior cruciate ligament reconstruction"],"prefix":"10.1002","volume":"20","author":[{"given":"Roland","family":"Thome\u00e9","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Lundberg Laboratory for 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