{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T21:23:33Z","timestamp":1783718613362,"version":"3.55.0"},"reference-count":42,"publisher":"National Athletic Trainers' Association","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2014,10,1]]},"abstract":"<jats:sec>\n                  <jats:title>Context:<\/jats:title>\n                  <jats:p>Hip-joint laxity may be a relevant anterior cruciate ligament injury risk factor. With no devices currently available to measure hip laxity, it is important to determine if clinical measurements sufficiently capture passive displacement of the hip.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Objective:<\/jats:title>\n                  <jats:p>To examine agreement between hip internal-external\u2013rotation range of motion measured clinically (HIERROM) versus internal-external\u2013rotation laxity measured at a fixed load (HIERLAX) and to determine their relationships with knee laxity (anterior-posterior [KAPLAX], varus-valgus [KVVLAX], and internal-external rotation [KIERLAX]) and general joint laxity (GJL).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Design<\/jats:title>\n                  <jats:p>Cross-sectional study.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Setting:<\/jats:title>\n                  <jats:p>Controlled research laboratory.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Patients or Other Participants:<\/jats:title>\n                  <jats:p>Thirty-two healthy adults (16 women, 16 men; age = 25.56 \u00b1 4.08 years, height = 170.94 \u00b1 10.62 cm, weight = 68.86 \u00b1 14.89 kg).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Main Outcome Measure(s):<\/jats:title>\n                  <jats:p>Participants were measured for HIERROM, HIERLAX at 0\u00b0 and 30\u00b0 hip flexion (\u221210 Nm, 7 Nm), KAPLAX (\u221290 N to 133 N), KVVLAX (\u00b110 Nm), KIERLAX (\u00b15 Nm), and GJL. We calculated Pearson correlations and 95% limits of agreement between HIERROM and HIERLAX_0\u00b0 and HIERLAX_30\u00b0. Correlation analyses examined the strength of associations between hip laxity, knee laxity, and GJL.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results:<\/jats:title>\n                  <jats:p>The HIERROM and HIERLAX had similar measurement precision and were strongly correlated (r &amp;gt; 0.78). However, HIERROM was systematically smaller in magnitude than HIERLAX at 0\u00b0 (95% limits of agreement = 29.0\u00b0 \u00b1 22.3\u00b0) and 30\u00b0 (21.4\u00b0 \u00b1 19.3\u00b0). The HIERROM (r = 0.51\u20130.66), HIERLAX_0\u00b0 (r = 0.52\u20130.69) and HIERLAX_30\u00b0 (r = 0.53\u20130.76) were similarly correlated with knee laxity measures and GJL. The combinations of KVVLAX and either HIERROM, HIERLAX_0\u00b0, or HIERLAX_30\u00b0 (R2 range, 0.42\u20130.44) were the strongest predictors of GJL.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions:<\/jats:title>\n                  <jats:p>Although HIERROM and HIERLAX differed in magnitude, they were measured with similar consistency and precision and were similarly correlated with knee laxity and GJL measures. Individuals with greater GJL also had greater hip laxity. These findings are relevant to clinicians and investigators conducting prospective risk factor studies, given the need for accessible, efficient, and low-cost alternatives for characterizing an individual's laxity profile.<\/jats:p>\n               <\/jats:sec>","DOI":"10.4085\/1062-6050-49.3.86","type":"journal-article","created":{"date-parts":[[2014,8,6]],"date-time":"2014-08-06T16:23:21Z","timestamp":1407342201000},"page":"590-598","source":"Crossref","is-referenced-by-count":4,"title":["Clinical and Instrumented Measurements of Hip Laxity and Their Associations With Knee Laxity and General Joint Laxity"],"prefix":"10.4085","volume":"49","author":[{"given":"Lixia","family":"Fan","sequence":"first","affiliation":[{"name":"Shandong Normal University, Jinan, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timothy J.","family":"Copple","sequence":"first","affiliation":[{"name":"Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of 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