{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T14:28:46Z","timestamp":1782916126600,"version":"3.54.5"},"reference-count":32,"publisher":"National Athletic Trainers' Association","issue":"8","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,8,1]]},"abstract":"\n Context<\/jats:title>\n Patient-reported function is an important outcome in anterior cruciate ligament rehabilitation. Identifying which metrics of thigh-muscle function are indicators of normal patient-reported function can help guide treatment.<\/jats:p>\n <\/jats:sec>\n \n Objective<\/jats:title>\n To identify which metrics of thigh-muscle function discriminate between patients who meet and patients who fail to meet age- and sex-matched normative values for patient-reported knee function in the first 9 months after anterior cruciate ligament reconstruction (ACLR) and establish cutoffs for these metrics by covariate subgroups.<\/jats:p>\n <\/jats:sec>\n \n Design<\/jats:title>\n Cross-sectional retrospective study.<\/jats:p>\n <\/jats:sec>\n \n Setting<\/jats:title>\n Laboratory.<\/jats:p>\n <\/jats:sec>\n \n Patients or Other Participants<\/jats:title>\n A total of 256 patients (129 females, 128 males; age = 17.1 \u00b1 3.0 years, height = 1.7 \u00b1 0.1 m, mass = 74.1 \u00b1 17.9 kg, months since surgery = 6.4 \u00b1 1.4), 3 to 9 months after primary unilateral ACLR.<\/jats:p>\n <\/jats:sec>\n \n Main Outcome Measure(s)<\/jats:title>\n We stratified the sample into dichotomous groups by the International Knee Documentation Committee (IKDC) score (IKDCMET, IKDCNOT MET) using sex- and age-matched normative values. We measured quadriceps and hamstrings isokinetic (60\u00b0\/s) torque and power bilaterally. Normalized quadriceps and hamstrings peak torque (Nm\/kg) and power (W\/kg), limb symmetry indices (LSI, %), and hamstrings\u200a:\u200aquadriceps ratios were calculated. Logistic regression indicated which of these metrics could predict IKDC classification while controlling for age, graft type, and sex. Receiver operating characteristic curves established cutoffs for explanatory variables for both total cohort and covariate subgroups. Odds ratios (OR) determined the utility of each cutoff to discriminate IKDC status.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n Quadriceps torque LSI (\u226569.4%, OR = 3.6), hamstrings torque (\u22651.11 Nm\/kg, OR = 2.1), and quadriceps power LSI (\u226571.4%, OR = 2.0) discriminated between IKDC classification in the total cohort. Quadriceps torque LSI discriminated between IKDC classification in the patellar-tendon graft (\u226561.6%, OR = 5.3), hamstrings-tendon graft (\u226571.8%, OR = 10.5), and age &lt;18 years (\u226574.3%, OR = 5.2) subgroups. Hamstrings torque discriminated between IKDC classifications in the age &lt;18 years (\u22651.10 Nm\/kg, OR = 2.6) subgroup.<\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n Quadriceps torque LSI, hamstrings torque, and quadriceps power LSI were the most useful metrics for predicting normal patient-reported knee function early after ACLR. Further, cutoff values that best predicted normal patient-reported function differed by graft type and age.<\/jats:p>\n <\/jats:sec>","DOI":"10.4085\/1062-6050-370-19","type":"journal-article","created":{"date-parts":[[2020,7,20]],"date-time":"2020-07-20T20:53:21Z","timestamp":1595278401000},"page":"826-833","source":"Crossref","is-referenced-by-count":17,"title":["Thigh-Muscle and Patient-Reported Function Early After Anterior Cruciate Ligament Reconstruction: Clinical Cutoffs Unique to Graft Type and Age"],"prefix":"10.4085","volume":"55","author":[{"given":"David","family":"Sherman","sequence":"first","affiliation":[{"name":"University of Toledo, OH"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Birchmeier","sequence":"additional","affiliation":[{"name":"Michigan State University, East Lansing"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher M.","family":"Kuenze","sequence":"additional","affiliation":[{"name":"Michigan State University, East Lansing"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Craig","family":"Garrison","sequence":"additional","affiliation":[{"name":"Texas Health Sports Medicine, Fort Worth"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joseph","family":"Hannon","sequence":"additional","affiliation":[{"name":"Texas Health Sports Medicine, Fort Worth"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James","family":"Bothwell","sequence":"additional","affiliation":[{"name":"Fort Worth Orthopedics, TX"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Curtis","family":"Bush","sequence":"additional","affiliation":[{"name":"Texas Health Sports Medicine, Fort Worth"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Grant E.","family":"Norte","sequence":"additional","affiliation":[{"name":"University of Toledo, OH"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2557","published-online":{"date-parts":[[2020,7,20]]},"reference":[{"key":"2020082414043026600_i1062-6050-55-8-826-b01","doi-asserted-by":"crossref","unstructured":"Bardes\n CL.\n \n \n Defining \u201cpatient-centered medicine.\u201d\n \n N Engl J Med\n .\n\t\t\t\t\t2012;\n\t\t\t\t\t366(9):\n\t\t\t\t\t782\u2013\n\t\t\t\t\t783.","DOI":"10.1056\/NEJMp1200070"},{"key":"2020082414043026600_i1062-6050-55-8-826-b02","doi-asserted-by":"crossref","unstructured":"Porter\n ME.\n \n \n What is value in health care?\n \n N Engl J Med\n .\n\t\t\t\t\t2010;\n\t\t\t\t\t363(26):\n\t\t\t\t\t2477\u2013\n\t\t\t\t\t2481.","DOI":"10.1056\/NEJMp1011024"},{"key":"2020082414043026600_i1062-6050-55-8-826-b03","doi-asserted-by":"crossref","unstructured":"McPherson\n AL,\n \n \n Feller\n JA,\n \n \n Hewett\n TE,\n \n \n Webster\n KE.\n \n \n Psychological readiness to return to sport is associated with second anterior cruciate ligament injuries.\n\t\t\t\t\tAm J Sports Med.\n\t\t\t\t\t2019;\n\t\t\t\t\t47(4):\n\t\t\t\t\t857\u2013\n\t\t\t\t\t862.","DOI":"10.1177\/0363546518825258"},{"key":"2020082414043026600_i1062-6050-55-8-826-b04","doi-asserted-by":"crossref","unstructured":"Ardern\n CL,\n \n \n Taylor\n NF,\n \n \n Feller\n JA,\n \n \n Whitehead\n TS,\n \n \n Webster\n KE.\n \n \n Sports participation 2 years after anterior cruciate ligament reconstruction in athletes who had not returned to sport at 1 year: a prospective follow-up of physical function and psychological factors in 122 athletes.\n\t\t\t\t\tAm J Sports Med.\n\t\t\t\t\t2015;\n\t\t\t\t\t43(4):\n\t\t\t\t\t848\u2013\n\t\t\t\t\t856.","DOI":"10.1177\/0363546514563282"},{"key":"2020082414043026600_i1062-6050-55-8-826-b05","doi-asserted-by":"crossref","unstructured":"Burgi\n CR,\n \n \n Peters\n S,\n \n \n Ardern\n CL,\n \n et al.\n\t\t\t\t\t\n Which criteria are used to clear patients to return to sport after primary ACL reconstruction? 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