{"id":"W7117296200","doi":"10.2106/jbjs.rvw.25.00215","title":"Fixation vs. Revision of Vancouver B2 Periprosthetic Fractures Around Polished Tapered Cemented Femoral Stems","year":2025,"lang":"en","type":"article","venue":"JBJS Reviews","topic":"Orthopaedic implants and arthroplasty","field":"Medicine","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Periprosthetic; Fixation (population genetics); Arthroplasty; Prosthesis design; Femur","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":[0.000396982,0.0001953828,0.0007362882,0.0001212026,0.00008308069,0.00002118128,0.0000766657,0.00009125393,0.0006219606],"category_scores_gemma":[0.0002667236,0.0001284668,0.0002069884,0.0002704874,0.00006739476,0.0001038055,0.00004338493,0.0001676653,0.0000458449],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00005253119,"about_ca_system_score_gemma":0.0000821639,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00005132797,"about_ca_topic_score_gemma":0.00004320131,"domain_scores_codex":[0.9984165,0.0001128425,0.0007321775,0.0002720862,0.0002539495,0.00021247],"domain_scores_gemma":[0.9990732,0.00003712415,0.0003196547,0.0003941898,0.00009830763,0.00007749664],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"not_applicable","study_design_scores_codex":[0.0004114314,0.0003538189,0.02610012,0.002648103,0.00008603313,0.00001839448,0.0004097593,0.00000354861,0.003979217,0.0001947454,0.291618,0.6741768],"study_design_scores_gemma":[0.001352541,0.0002271765,0.01854115,0.001983132,0.0001387681,0.00001146619,0.00009751532,0.0001321051,0.0006506203,0.00001858028,0.9767326,0.0001143695],"study_design_candidate":"not_applicable","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.8844663,0.07102189,0.002149474,0.003138331,0.004627086,0.006908617,0.00007771282,0.0001777948,0.02743283],"genre_scores_gemma":[0.9782282,0.008796691,0.001083664,0.002594552,0.0002571456,0.00002406105,0.00009957058,0.00002132684,0.008894854],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.6851146,"threshold_uncertainty_score":0.6810033,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01963983645040605,"score_gpt":0.3230392356155071,"score_spread":0.3033993991651011,"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."}}