{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T06:03:50Z","timestamp":1792649030412,"version":"4.5.0"},"reference-count":42,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2006,9,6]],"date-time":"2006-09-06T00:00:00Z","timestamp":1157500800000},"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":[[2006,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>If permission of full active and passive extension immediately after an anterior cruciate ligament (ACL) reconstruction will increase the post\u2010operative laxity of the knee has been a subject of discussion. We investigated whether a post\u2010operative rehabilitation protocol including active and passive extension without any restrictions in extension immediately after an ACL reconstruction would increase the post\u2010operative anterior\u2013posterior knee laxity (A\u2013P laxity). Our hypothesis was that full active and passive extension immediately after an ACL reconstruction would have no effect on the A\u2013P laxity and clinical results up to 2 years after the operation. Twenty\u2010two consecutive patients (14\u00a0men, 8 women, median age 21 years, range 17\u201341) were included. All the patients had a unilateral ACL rupture and no other ligament injuries or any other history of previous knee injuries. The surgical procedure was identical in all patients and one experienced surgeon operated on all the patients, using the bone\u2010patellar tendon\u2010bone autograft. The post\u2010operative rehabilitation programme was identical in both groups, except for extension training during the first 4 weeks post\u2010operatively. The patients were randomly allocated to post\u2010operative rehabilitation programmes either allowing (Group A, <jats:italic>n<\/jats:italic>=11) or not allowing [Group B (30 to \u221210\u00b0), <jats:italic>n<\/jats:italic>=11] full active and passive extension immediately after the operation. They were evaluated pre\u2010operatively and at 6\u00a0months and 2 years after the reconstruction. To evaluate the A\u2013P knee laxity, radiostereometric analysis (RSA) and KT\u20101000 arthrometer (KT\u20101000) measurements were used, range of motion, Lysholm score, Tegner activity level, the International Knee Documentation Committee (IKDC) evaluation system and one\u2010leg\u2010hop test quotient were used. Pre\u2010operatively, the RSA measurements revealed side\u2010to\u2010side differences in Group A of 8.6\u00a0mm (2.3\u201315.4), median (range) and in Group B of 7.2\u00a0mm (2.2\u201317.4) (n.s.). The corresponding KT\u20101000 values were for Group A, 2.0\u00a0mm (0\u20138.0) and Group B, 4.0\u00a0mm (0\u201310.0) (n.s.). At 2 years, the differences between the two groups were minimal, regardless of the method that had been used. The RSA measurements in Group A were 2.7\u00a0mm (0\u201310.7) and in Group B 2.8 (\u22121.8 to 9.5). The KT\u20101000 values were for Group A, 1.0\u00a0mm (\u22121.5 to 3.5), and for Group B, 0.5\u00a0mm (\u22121.0 to 4.0), without any significant differences between the groups. Nor did the Lysholm score, Tegner activity level, IKDC or one\u2010leg\u2010hop test differ. Early active and passive extension training, without any restrictions in extension, immediately after an ACL reconstruction using bone\u2010patellar tendon\u2010bone graft did not increase post\u2010operative knee laxity up to 2 years after the ACL reconstruction.<\/jats:p>","DOI":"10.1007\/s00167-006-0138-2","type":"journal-article","created":{"date-parts":[[2006,9,5]],"date-time":"2006-09-05T12:31:55Z","timestamp":1157459515000},"page":"1108-1115","source":"Crossref","is-referenced-by-count":60,"title":["Early active extension after anterior cruciate ligament reconstruction does not result in increased laxity of the knee"],"prefix":"10.1002","volume":"14","author":[{"given":"Jonas","family":"Isberg","sequence":"first","affiliation":[{"name":"Department of Orthopaedics Sahlgrenska University Hospital 416 85 Goteborg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eva","family":"Fax\u00e9n","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Sahlgrenska University Hospital 416 85 Goteborg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sveinbj\u00f6rn","family":"Brandsson","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Sahlgrenska University Hospital 416 85 Goteborg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bengt I.","family":"Eriksson","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Sahlgrenska University Hospital 416 85 Goteborg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johan","family":"K\u00e4rrholm","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Sahlgrenska University Hospital 416 85 Goteborg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jon","family":"Karlsson","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Sahlgrenska University Hospital 416 85 Goteborg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2006,9,6]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010004\u20100518\u20104"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1093\/ptj\/75.10.898"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354659702500312"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0736\u20100266(01)00171\u20101"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1080\/000164701753542032"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.1177\/03635465020300031001"},{"key":"e_1_2_5_8_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354659502300405"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1097\/00005768\u2010199810000\u201000003"},{"key":"e_1_2_5_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0021\u20109290(01)00087\u20102"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.3109\/17453679209154856"},{"key":"e_1_2_5_12_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-2007-1024996"},{"key":"e_1_2_5_13_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01560215"},{"key":"e_1_2_5_14_1","doi-asserted-by":"publisher","DOI":"10.1080\/17453679209169714"},{"key":"e_1_2_5_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/jor.1100120604"},{"key":"e_1_2_5_16_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354658901700613"},{"key":"e_1_2_5_17_1","doi-asserted-by":"publisher","DOI":"10.3109\/17453679308993694"},{"key":"e_1_2_5_18_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301\u2010620X.80B1.7811"},{"key":"e_1_2_5_19_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00184906"},{"key":"e_1_2_5_20_1","doi-asserted-by":"publisher","DOI":"10.3109\/17453678909149328"},{"key":"e_1_2_5_21_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301\u2010620X.82B8.10715"},{"key":"e_1_2_5_22_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.70B5.3192579"},{"key":"e_1_2_5_23_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010003\u20100406\u20103"},{"key":"e_1_2_5_24_1","doi-asserted-by":"publisher","DOI":"10.1007\/s001670000143"},{"key":"e_1_2_5_25_1","doi-asserted-by":"publisher","DOI":"10.1093\/ptj\/82.1.35"},{"key":"e_1_2_5_26_1","doi-asserted-by":"publisher","DOI":"10.1007\/s001670000161"},{"key":"e_1_2_5_27_1","doi-asserted-by":"publisher","DOI":"10.1007\/s002640050276"},{"key":"e_1_2_5_28_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354658901700614"},{"key":"e_1_2_5_29_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354658701500210"},{"key":"e_1_2_5_30_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0736\u20100266(01)00039\u20100"},{"key":"e_1_2_5_31_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199312000-00009"},{"key":"e_1_2_5_32_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600\u20100838.1998.tb00463.x"},{"key":"e_1_2_5_33_1","doi-asserted-by":"crossref","unstructured":"SelvikG(1974 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