biostudies-literatureUnknown23(1)Yang K<h4>Background</h4>Measurement of T1 slope (T1S) can be difficult due to the anatomical positioning of the shoulders. And thoracic inlet angle (TIA) was a morphological parameter and not changed by the position. We proposed a new parameter, TIA minus C0-7 angle (TIA-C07), to evaluate C2-7 SVA in order to overcome the T1S imperfection.<h4>Methods</h4>This was a retrospective radiological analysis of symptomatic subjects. The following cervical parameters were measured: Cervical lordosis angle (CL), C0-7 angle (C0-7), occiput-C2 lordosis angle (O-C2), C2-7 sagittal vertical axis (C2-7 SVA), TIA and TIA-C07. The Pearson correlation test was calculated, and the stepwise multiple regression analysis was conducted to determine the best predictor for C2-7 SVA. A paired sample t test was used to cBMC musculoskeletal disorders338https://www.ebi.ac.uk/biostudies/studies/S-EPMC8991799biostudies-literatureRelationship between TIA minus C0-7 angle and C2-7 SVA: analysis of 113 symptomatic patients.PMC8991799Lu SBYang KLi XYKong CWang YfalseRelationship between TIA minus C0-7 angle and C2-7 SVA: analysis of 113 symptomatic patients.<h4>Background</h4>Measurement of T1 slope (T1S) can be difficult due to the anatomical positioning of the shoulders. And thoracic inlet angle (TIA) was a morphological parameter and not changed by the position. We proposed a new parameter, TIA minus C0-7 angle (TIA-C07), to evaluate C2-7 SVA in order to overcome the T1S imperfection.<h4>Methods</h4>This was a retrospective radiological analysis of symptomatic subjects. The following cervical parameters were measured: Cervical lordosis angle (CL), C0-7 angle (C0-7), occiput-C2 lordosis angle (O-C2), C2-7 sagittal vertical axis (C2-7 SVA), TIA and TIA-C07. The Pearson correlation test was calculated, and the stepwise multiple regression analysis was conducted to determine the best predictor for C2-7 SVA. A paired sample t test was used to c2022-01-01T00:00:00Z2022 Apr2025-04-26T15:20:02.361Z2025-04-06T14:50:47.973ZS-EPMC89917993539579110.1186/s12891-022-05301-0