Femur-tibia angle and patella-tibia angle: new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imaging
Abstract Background Femur-tibia angle (FTA) and patella-tibia angle (PTA) are two MRI measurements that reflect the rotation of the knee joint. The purposes of this study were to assess whether FTA and PTA are associated with ACL tear and to explore their roles in ACL tear diagnosis. Methods FTA, PT...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2022-04-01
|
| Series: | BMC Sports Science, Medicine and Rehabilitation |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13102-022-00462-w |
| _version_ | 1818022541737852928 |
|---|---|
| author | Zeng Li Mengyuan Li Yan Du Mo Zhang Hai Jiang Ruiying Zhang Yuanchen Ma Qiujian Zheng |
| author_facet | Zeng Li Mengyuan Li Yan Du Mo Zhang Hai Jiang Ruiying Zhang Yuanchen Ma Qiujian Zheng |
| author_sort | Zeng Li |
| collection | DOAJ |
| description | Abstract Background Femur-tibia angle (FTA) and patella-tibia angle (PTA) are two MRI measurements that reflect the rotation of the knee joint. The purposes of this study were to assess whether FTA and PTA are associated with ACL tear and to explore their roles in ACL tear diagnosis. Methods FTA, PTA, ACL angle and anterior tibial subluxation were compared between the two matched groups: ACL tear group and control group (each n = 20). Diagnostic performance was evaluated in a consecutive 120-patient cohort who underwent MR imaging of the knee and subsequently had arthroscopy. Different measurements were assessed by area under the curve (AUC) of receiver operating characteristic (ROC) curve. Results FTA and PTA increased significantly in ACL tears group when compared to the control group (4.79 and 7.36 degrees, respectively, p < 0.05). In distinguishing complete ACL tear, ACL angle had the highest AUC of 0.906 while AUC of PTA and FTA were 0.849 and 0.809. The cutoff of FTA was 80 degrees with a sensitivity of 82% and specificity of 68%, while the cutoff of PTA was 91 degrees with a sensitivity of 82% and specificity of 74%. In distinguishing partial ACL tear, FTA and PTA had the highest AUCs of 0.847 and 0.813, respectively. The calculated cutoff of FTA was 84 degrees with a sensitivity of 90% and specificity of 81%, while the cutoff of PTA was 92 degrees with a sensitivity of 80% and specificity of 77%. Conclusion FTA and PTA increased when ACL tears and they might be valuable in diagnosing ACL tears, especially in distinguishing partial ACL tear from intact ACL. |
| first_indexed | 2024-12-10T03:30:04Z |
| format | Article |
| id | doaj.art-513ec082d8394cdb950e5142e99222da |
| institution | Directory Open Access Journal |
| issn | 2052-1847 |
| language | English |
| last_indexed | 2024-12-10T03:30:04Z |
| publishDate | 2022-04-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Sports Science, Medicine and Rehabilitation |
| spelling | doaj.art-513ec082d8394cdb950e5142e99222da2022-12-22T02:03:50ZengBMCBMC Sports Science, Medicine and Rehabilitation2052-18472022-04-0114111010.1186/s13102-022-00462-wFemur-tibia angle and patella-tibia angle: new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imagingZeng Li0Mengyuan Li1Yan Du2Mo Zhang3Hai Jiang4Ruiying Zhang5Yuanchen Ma6Qiujian Zheng7Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical SciencesDepartment of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical SciencesClinical Research Unit, Obstetrics and Gynecology Hospital of Fudan UniversityClinical Research Unit, Obstetrics and Gynecology Hospital of Fudan UniversityDepartment of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical SciencesDepartment of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical SciencesDepartment of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical SciencesDepartment of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical SciencesAbstract Background Femur-tibia angle (FTA) and patella-tibia angle (PTA) are two MRI measurements that reflect the rotation of the knee joint. The purposes of this study were to assess whether FTA and PTA are associated with ACL tear and to explore their roles in ACL tear diagnosis. Methods FTA, PTA, ACL angle and anterior tibial subluxation were compared between the two matched groups: ACL tear group and control group (each n = 20). Diagnostic performance was evaluated in a consecutive 120-patient cohort who underwent MR imaging of the knee and subsequently had arthroscopy. Different measurements were assessed by area under the curve (AUC) of receiver operating characteristic (ROC) curve. Results FTA and PTA increased significantly in ACL tears group when compared to the control group (4.79 and 7.36 degrees, respectively, p < 0.05). In distinguishing complete ACL tear, ACL angle had the highest AUC of 0.906 while AUC of PTA and FTA were 0.849 and 0.809. The cutoff of FTA was 80 degrees with a sensitivity of 82% and specificity of 68%, while the cutoff of PTA was 91 degrees with a sensitivity of 82% and specificity of 74%. In distinguishing partial ACL tear, FTA and PTA had the highest AUCs of 0.847 and 0.813, respectively. The calculated cutoff of FTA was 84 degrees with a sensitivity of 90% and specificity of 81%, while the cutoff of PTA was 92 degrees with a sensitivity of 80% and specificity of 77%. Conclusion FTA and PTA increased when ACL tears and they might be valuable in diagnosing ACL tears, especially in distinguishing partial ACL tear from intact ACL.https://doi.org/10.1186/s13102-022-00462-wAnterior cruciate ligamentFemur-tibia anglePatella-tibia angleMagnetic resonance imagingLigament tears |
| spellingShingle | Zeng Li Mengyuan Li Yan Du Mo Zhang Hai Jiang Ruiying Zhang Yuanchen Ma Qiujian Zheng Femur-tibia angle and patella-tibia angle: new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imaging BMC Sports Science, Medicine and Rehabilitation Anterior cruciate ligament Femur-tibia angle Patella-tibia angle Magnetic resonance imaging Ligament tears |
| title | Femur-tibia angle and patella-tibia angle: new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imaging |
| title_full | Femur-tibia angle and patella-tibia angle: new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imaging |
| title_fullStr | Femur-tibia angle and patella-tibia angle: new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imaging |
| title_full_unstemmed | Femur-tibia angle and patella-tibia angle: new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imaging |
| title_short | Femur-tibia angle and patella-tibia angle: new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imaging |
| title_sort | femur tibia angle and patella tibia angle new indicators for diagnosing anterior cruciate ligament tears in magnetic resonance imaging |
| topic | Anterior cruciate ligament Femur-tibia angle Patella-tibia angle Magnetic resonance imaging Ligament tears |
| url | https://doi.org/10.1186/s13102-022-00462-w |
| work_keys_str_mv | AT zengli femurtibiaangleandpatellatibiaanglenewindicatorsfordiagnosinganteriorcruciateligamenttearsinmagneticresonanceimaging AT mengyuanli femurtibiaangleandpatellatibiaanglenewindicatorsfordiagnosinganteriorcruciateligamenttearsinmagneticresonanceimaging AT yandu femurtibiaangleandpatellatibiaanglenewindicatorsfordiagnosinganteriorcruciateligamenttearsinmagneticresonanceimaging AT mozhang femurtibiaangleandpatellatibiaanglenewindicatorsfordiagnosinganteriorcruciateligamenttearsinmagneticresonanceimaging AT haijiang femurtibiaangleandpatellatibiaanglenewindicatorsfordiagnosinganteriorcruciateligamenttearsinmagneticresonanceimaging AT ruiyingzhang femurtibiaangleandpatellatibiaanglenewindicatorsfordiagnosinganteriorcruciateligamenttearsinmagneticresonanceimaging AT yuanchenma femurtibiaangleandpatellatibiaanglenewindicatorsfordiagnosinganteriorcruciateligamenttearsinmagneticresonanceimaging AT qiujianzheng femurtibiaangleandpatellatibiaanglenewindicatorsfordiagnosinganteriorcruciateligamenttearsinmagneticresonanceimaging |