{"id":"W3017752372","doi":"10.2106/jbjs.19.01125","title":"A Calcar Collar Is Protective Against Early Torsional/Spiral Periprosthetic Femoral Fracture","year":2020,"lang":"en","type":"article","venue":"Journal of Bone and Joint Surgery","topic":"Orthopaedic implants and arthroplasty","field":"Medicine","cited_by":65,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Collar; Periprosthetic; Medicine; Calcar; Femur; Femoral fracture; Spiral (railway); Cadaveric spasm; Cadaver; Calipers; Fracture (geology); Femoral canal; Surgery; Orthodontics; Materials science; Arthroplasty; Mathematics; Composite material; Geometry; Structural engineering","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0003770172,0.0001550446,0.0007884547,0.0001404374,0.00009904965,0.00003243043,0.00001169164,0.00009427381,0.0001699336],"category_scores_gemma":[0.0002198139,0.0001057078,0.0003760543,0.0001305396,0.00007744895,0.0001491169,0.00002719639,0.0004239007,0.00001076909],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00002320561,"about_ca_system_score_gemma":0.0002386875,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.000008097889,"about_ca_topic_score_gemma":3.576981e-7,"domain_scores_codex":[0.9985453,0.00004579297,0.0006405659,0.0001496312,0.0004074423,0.0002112541],"domain_scores_gemma":[0.9988994,0.00005750438,0.0004126012,0.00007494596,0.0001737201,0.0003818232],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.006781678,0.0009269159,0.5665083,0.001189857,0.0009036562,0.01890231,0.01157305,0.00001777506,0.02928689,0.00002552177,0.2420292,0.1218548],"study_design_scores_gemma":[0.00343718,0.002587362,0.7835236,0.001287539,0.0002489211,0.005681337,0.001212419,0.0001513246,0.003418587,0.00006324557,0.1979423,0.0004461348],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9833576,0.001059675,0.00009521168,0.01495734,0.0002071169,0.000177684,0.00001592113,0.00001195256,0.0001174885],"genre_scores_gemma":[0.987935,0.0002546957,0.0001931962,0.01078975,0.000725468,0.000001823925,0.000002455194,0.00001873411,0.00007887385],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.2170153,"threshold_uncertainty_score":0.431064,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02720448529066321,"score_gpt":0.2352275062481893,"score_spread":0.2080230209575261,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}