{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T12:58:53Z","timestamp":1740142733334,"version":"3.37.3"},"reference-count":42,"publisher":"FapUNIFESP (SciELO)","issue":"5","license":[{"start":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T00:00:00Z","timestamp":1633046400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T00:00:00Z","timestamp":1633046400000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T00:00:00Z","timestamp":1633046400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Radiol Bras"],"abstract":"<jats:p>Abstract  Objective: To evaluate qualitative and quantitative magnetic resonance imaging (MRI) criteria for injury of the common peroneal nerve (CPN) in patients with acute or subacute injuries in the posterolateral corner (PLC) of the knee, as well as to evaluate the reproducibility of MRI evaluation of CPN alterations.  Materials and Methods: This was a retrospective study of 38 consecutive patients submitted to MRI and diagnosed with acute or subacute injury to the PLC of the knee (patient group) and 38 patients with normal MRI results (control group). Two musculoskeletal radiologists (designated radiologist A and radiologist B, respectively) evaluated the images. Nerve injury was classified as neurapraxia, axonotmesis, or neurotmesis. Signal strength was measured at the CPN, the tibial nerve (TN), and a superficial vein (SV). The CPN\/TN and CPN\/SV signal ratios were calculated. The status of each PLC structure, including the popliteal tendon, arcuate ligament, lateral collateral ligament, and biceps tendon, was classified as normal, partially torn, or completely torn, as was that of the cruciate ligaments. For the semiquantitative analysis of interobserver agreement, the kappa statistic was calculated, whereas a receiver operating characteristic (ROC) curve was used for the quantitative analysis.  Results: In the patient group, radiologist A found CPN abnormalities in 15 cases (39.4%)-neurapraxia in eight and axonotmesis in seven-whereas radiologist B found CPN abnormalities in 14 (36.8%)-neurapraxia in nine and axonotmesis in five. The kappa statistic showed excellent interobserver agreement. In the control group, the CPN\/TN signal ratio ranged from 0.63 to 1.1 and the CPN\/SV signal ratio ranged from 0.16 to 0.41, compared with 1.30-4.02 and 0.27-1.08, respectively, in the patient group. The ROC curve analysis demonstrated that the CPN\/TN signal ratio at a cutoff value of 1.39 had high (93.3%) specificity for the identification of nerve damage, compared with 81.3% for the CPN\/SV signal ratio at a cutoff value of 0.41.  Conclusion: CPN alterations are common in patients with PLC injury detected on MRI, and the level of interobserver agreement for such alterations was excellent. Calculating the CPN\/TN and CPN\/SV signal ratios may increase diagnostic confidence. We recommend systematic analysis of the CPN in cases of PLC injury.<\/jats:p>","DOI":"10.1590\/0100-3984.2020.0072","type":"journal-article","created":{"date-parts":[[2021,9,27]],"date-time":"2021-09-27T15:20:27Z","timestamp":1632756027000},"page":"303-310","source":"Crossref","is-referenced-by-count":3,"title":["Magnetic resonance imaging evaluation of common peroneal nerve injury in acute and subacute posterolateral corner lesion: a retrospective study"],"prefix":"10.1590","volume":"54","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5981-9158","authenticated-orcid":false,"given":"Gustavo Felix","family":"Marconi","sequence":"first","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2164-1910","authenticated-orcid":false,"given":"Marcelo Novelino","family":"Sim\u00e3o","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6495-3383","authenticated-orcid":false,"given":"Fabricio","family":"Fogagnolo","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7436-5315","authenticated-orcid":false,"given":"Marcello Henrique","family":"Nogueira-Barbosa","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","published-online":{"date-parts":[[2021,10]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1016\/S0020-1383(03)00094-9","article-title":"The posterolateral corner of the knee: Anatomy, biomechanics and management of injuries","volume":"35","author":"Davies 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lymphangiography: a useful new technique","volume":"52","author":"Fiorentini LF","year":"2019","journal-title":"Radiol Bras"},{"key":"ref37","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1590\/0100-3984.2019.0054","article-title":"Accuracy of magnetic resonance imaging for diagnosing hallux valgus","volume":"53","author":"Helito PVP","year":"2020","journal-title":"Radiol Bras"},{"key":"ref38","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1590\/0100-3984.2019.0077","article-title":"Comparison between STIR and T2-weighted SPAIR sequences in the evaluation of inflammatory sacroiliitis: diagnostic performance and signal-to-noise ratio","volume":"53","author":"Dalto VF","year":"2020","journal-title":"Radiol Bras"},{"key":"ref39","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1590\/0100-3984.2019.0048","article-title":"Spinopelvic sagittal balance: what does the radiologist need to know?","volume":"53","author":"Savarese 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Brasileira"],"original-title":[],"deposited":{"date-parts":[[2021,9,27]],"date-time":"2021-09-27T15:21:02Z","timestamp":1632756062000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S0100-39842021000500303&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,10]]},"references-count":42,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2021,10]]}},"alternative-id":["S0100-39842021000500303"],"URL":"https:\/\/doi.org\/10.1590\/0100-3984.2020.0072","relation":{},"ISSN":["1678-7099"],"issn-type":[{"type":"electronic","value":"1678-7099"}],"subject":[],"published":{"date-parts":[[2021,10]]}}}