{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T21:29:48Z","timestamp":1790890188055,"version":"4.1.0"},"reference-count":35,"publisher":"SAGE Publications","issue":"11","license":[{"start":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T00:00:00Z","timestamp":1761955200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T00:00:00Z","timestamp":1761955200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Journal of Sports Medicine"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>The importance of patient-reported outcome measures (PROMs) is becoming increasingly recognized in the orthopaedic field. The Banff Patellofemoral Instability Instrument 2.0 (BPII 2.0) is a disease-specific tool designed for patients with patellofemoral instability.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To adapt, translate, and validate the BPII 2.0 into Polish, to enable its use by Polish-speaking professionals for the evaluation of patients who present with patellofemoral instability.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Cohort study (Diagnosis); Level of evidence, 3.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>The final Polish version of the BPII 2.0 was investigated in patients with a confirmed diagnosis of recurrent patellofemoral joint (PFJ) instability. Patients completed 2 sets of PROMs, the BPII 2.0, Anterior Knee Pain Scale (Kujala), Norwich Patellar Instability (NPI) score, Lysholm knee score, and International Knee Documentation Committee [IKDC] Subjective Knee Form, at the clinic visit and 7 to 14 days later. The following psychometric properties were assessed: face validity, floor and ceiling effects, test-retest reliability, internal consistency, construct validity, standard error of measurement (SEM), and minimal clinically important difference (MCID). The reliability was evaluated by measuring the internal consistency (Cronbach alpha) and test-retest reliability (intraclass correlation coefficient). Pearson correlation coefficients were used to examine the validity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      The study population consisted of 80 postoperative patients (29 males, 51 females) aged 12 to 37 years with a confirmed diagnosis of recurrent PFJ instability. Face validity was assessed with an expert clinician group and an expert-patient group. No floor or ceiling effects were observed. The test-retest reliability of the BPII was 0.995 (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .01). The BPII 2.0 score demonstrated excellent internal consistency, with a Cronbach alpha of 0.95 at baseline and 0.96 at the retest.\n                    <\/jats:p>\n                    <jats:p>\n                      The correlations of the BPII with the other PROMs were statistically significant and classified as moderate to strong: IKDC Subjective Knee Form (Pearson rho = 0.725;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001), Lysholm score (rho = 0.58;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001), and Kujala score (rho = 0.533;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001). A significant negative correlation of moderate strength between the BPII and NPI score (rho = \u20130.615;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001) was calculated. The SEM was estimated at 1.329 and the MCID was 3.028.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>This study demonstrated that the Polish version of the BPII 2.0 is a reliable and valid instrument for Polish-speaking patients with recurrent patellofemoral instability. It will enable multicenter, international studies through uniform application of the functional assessment of patients with PFJ instability.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671251391815","type":"journal-article","created":{"date-parts":[[2025,11,25]],"date-time":"2025-11-25T15:51:46Z","timestamp":1764085906000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Polish Validation and Language Adaptation of the Banff Patellofemoral Instability Instrument 2.0"],"prefix":"10.1177","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0641-846X","authenticated-orcid":false,"given":"Alicja","family":"F\u0105fara","sequence":"first","affiliation":[{"name":"Jagiellonian University Medical College, Faculty of Health Sciences, Institute of Physiotherapy, Krak\u00f3w, Poland"},{"name":"Children\u2019s University Hospital in Krakow, Krak\u00f3w, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-2518-9872","authenticated-orcid":false,"given":"Jaros\u0142aw","family":"Felu\u015b","sequence":"additional","affiliation":[{"name":"Children\u2019s University Hospital in Krakow, Krak\u00f3w, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6240-3169","authenticated-orcid":false,"given":"Kinga","family":"\u017bmijewska-Jasi\u0144ska","sequence":"additional","affiliation":[{"name":"Jagiellonian University Medical College, Faculty of Health Sciences, Institute of Physiotherapy, Krak\u00f3w, Poland"},{"name":"Department of Orthopedics and Physiotherapy, Jagiellonian University Medical College, Krak\u00f3w, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2025,11,25]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/23259671251340989"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-200012150-00014"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-017-4673-9"},{"key":"e_1_3_3_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/ksa.12620"},{"key":"e_1_3_3_6_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546503260788"},{"key":"e_1_3_3_7_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465231152484"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-0040-1721840"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.1080\/14992027.2017.1393565"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546513487981"},{"key":"e_1_3_3_11_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465241281341"},{"key":"e_1_3_3_12_2","doi-asserted-by":"publisher","DOI":"10.1007\/s12178-019-09537-7"},{"key":"e_1_3_3_13_2","doi-asserted-by":"publisher","DOI":"10.1002\/ksa.12647"},{"key":"e_1_3_3_14_2","doi-asserted-by":"publisher","DOI":"10.1177\/23259671231168881"},{"key":"e_1_3_3_15_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465010290051301"},{"key":"e_1_3_3_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/s0749-8063(05)80366-4"},{"key":"e_1_3_3_17_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546516644605"},{"key":"e_1_3_3_18_2","doi-asserted-by":"publisher","DOI":"10.1097\/BPO.0000000000001407"},{"key":"e_1_3_3_19_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-0034-1398373"},{"key":"e_1_3_3_20_2","doi-asserted-by":"publisher","DOI":"10.1177\/036354658201000306"},{"key":"e_1_3_3_21_2","doi-asserted-by":"publisher","DOI":"10.1177\/23259671241298306"},{"key":"e_1_3_3_22_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465980260030201"},{"key":"e_1_3_3_23_2","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2288-10-22"},{"key":"e_1_3_3_24_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198769080-00010"},{"key":"e_1_3_3_25_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465030310040201"},{"key":"e_1_3_3_26_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11136-018-1798-3"},{"key":"e_1_3_3_27_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00590-022-03336-6"},{"key":"e_1_3_3_28_2","doi-asserted-by":"publisher","DOI":"10.1177\/1941738117725055"},{"key":"e_1_3_3_29_2","doi-asserted-by":"publisher","DOI":"10.1177\/0194599819852604"},{"key":"e_1_3_3_30_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.knee.2015.10.003"},{"key":"e_1_3_3_31_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-012-2359-x"},{"key":"e_1_3_3_32_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jclinepi.2006.03.012"},{"key":"e_1_3_3_33_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11136-018-1829-0"},{"issue":"3","key":"e_1_3_3_34_2","first-page":"470","article-title":"Dutch 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