Preoperative Less Right Shoulder Elevation Had a Higher Risk of Postoperative Shoulder Imbalance When Main Thoracic Curve Shows Higher Correction Regardless of the Upper Instrumented Vertebra Level for Patients with Adolescent Idiopathic Scoliosis Lenke Type 1
Study Design This is a retrospective study. Purpose This study aimed to investigate the incidence of and risk factors for postoperative shoulder imbalance (PSI) in patients with Lenke type 1. Overview of Literature PSI is a complication resulting in poor self-image and satisfaction in adolescent idi...
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| Format: | Article |
| Language: | English |
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Korean Spine Society
2023-02-01
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| Series: | Asian Spine Journal |
| Subjects: | |
| Online Access: | http://www.asianspinejournal.org/upload/pdf/asj-2022-0020.pdf |
| _version_ | 1797835785021423616 |
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| author | Tomohiro Banno Yu Yamato Tomohiko Hasegawa Go Yoshida Hideyuki Arima Shin Oe Yuki Mihara Koichiro Ide Yuh Watanabe Kenta Kurosu Keiichi Nakai Yukihiro Matsuyama |
| author_facet | Tomohiro Banno Yu Yamato Tomohiko Hasegawa Go Yoshida Hideyuki Arima Shin Oe Yuki Mihara Koichiro Ide Yuh Watanabe Kenta Kurosu Keiichi Nakai Yukihiro Matsuyama |
| author_sort | Tomohiro Banno |
| collection | DOAJ |
| description | Study Design This is a retrospective study. Purpose This study aimed to investigate the incidence of and risk factors for postoperative shoulder imbalance (PSI) in patients with Lenke type 1. Overview of Literature PSI is a complication resulting in poor self-image and satisfaction in adolescent idiopathic scoliosis (AIS) patients. Methods We examined the data of AIS patients with Lenke type 1 curves who underwent posterior fusion surgery in a retrospective manner. PSI was defined as a 2-year postoperative absolute radiographic shoulder height (RSH) of ≥2 cm. Patients were divided into two groups based on the presence of PSI and the level of their upper instrumented vertebra (UIV) (UIV at T2 or T3 [U-UIV] or UIV below T3 [L-UIV]). The radiographic parameters and clinical outcomes were compared, and the cutoff values of risk factors were identified by multivariate analysis. Results Of 104 patients, 21 (20.2%) had left shoulder elevation PSI. The PSI group had a significantly greater preoperative RSH (−5.1 mm vs. −14.3 mm) and main thoracic (MT) curve correction rate (77.3% vs. 69.1%) than the non-PSI group. The PSI incidence did not differ between the U-UIV and L-UIV groups. Multivariate analysis identified preoperative RSH and the MT curve correction rate as independent risk factors for PSI. The receiver operating characteristic curve analysis identified the preoperative RSH cutoff value as −6.5 mm and MT curve correction rate cutoff value as 76.9%. Conclusions Even in AIS patients with Lenke type 1 curves, the incidence of PSI was relatively high (20.2%). Patients with preoperative lower right shoulder elevation (i.e., RSH >−6.5 mm) had a higher risk of PSI regardless of UIV level when the MT curve showed a higher correction rate (i.e., correction rate >76.9%). |
| first_indexed | 2024-04-09T14:59:08Z |
| format | Article |
| id | doaj.art-eb1cd3921c2647f88cd1c65a32d1d651 |
| institution | Directory Open Access Journal |
| issn | 1976-1902 1976-7846 |
| language | English |
| last_indexed | 2024-04-09T14:59:08Z |
| publishDate | 2023-02-01 |
| publisher | Korean Spine Society |
| record_format | Article |
| series | Asian Spine Journal |
| spelling | doaj.art-eb1cd3921c2647f88cd1c65a32d1d6512023-05-01T23:47:38ZengKorean Spine SocietyAsian Spine Journal1976-19021976-78462023-02-0117116617510.31616/asj.2022.00201469Preoperative Less Right Shoulder Elevation Had a Higher Risk of Postoperative Shoulder Imbalance When Main Thoracic Curve Shows Higher Correction Regardless of the Upper Instrumented Vertebra Level for Patients with Adolescent Idiopathic Scoliosis Lenke Type 1Tomohiro Banno0Yu Yamato1Tomohiko Hasegawa2Go Yoshida3Hideyuki Arima4Shin Oe5Yuki Mihara6Koichiro Ide7Yuh Watanabe8Kenta Kurosu9Keiichi Nakai10Yukihiro Matsuyama11Department of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanDepartment of Orthopaedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, JapanStudy Design This is a retrospective study. Purpose This study aimed to investigate the incidence of and risk factors for postoperative shoulder imbalance (PSI) in patients with Lenke type 1. Overview of Literature PSI is a complication resulting in poor self-image and satisfaction in adolescent idiopathic scoliosis (AIS) patients. Methods We examined the data of AIS patients with Lenke type 1 curves who underwent posterior fusion surgery in a retrospective manner. PSI was defined as a 2-year postoperative absolute radiographic shoulder height (RSH) of ≥2 cm. Patients were divided into two groups based on the presence of PSI and the level of their upper instrumented vertebra (UIV) (UIV at T2 or T3 [U-UIV] or UIV below T3 [L-UIV]). The radiographic parameters and clinical outcomes were compared, and the cutoff values of risk factors were identified by multivariate analysis. Results Of 104 patients, 21 (20.2%) had left shoulder elevation PSI. The PSI group had a significantly greater preoperative RSH (−5.1 mm vs. −14.3 mm) and main thoracic (MT) curve correction rate (77.3% vs. 69.1%) than the non-PSI group. The PSI incidence did not differ between the U-UIV and L-UIV groups. Multivariate analysis identified preoperative RSH and the MT curve correction rate as independent risk factors for PSI. The receiver operating characteristic curve analysis identified the preoperative RSH cutoff value as −6.5 mm and MT curve correction rate cutoff value as 76.9%. Conclusions Even in AIS patients with Lenke type 1 curves, the incidence of PSI was relatively high (20.2%). Patients with preoperative lower right shoulder elevation (i.e., RSH >−6.5 mm) had a higher risk of PSI regardless of UIV level when the MT curve showed a higher correction rate (i.e., correction rate >76.9%).http://www.asianspinejournal.org/upload/pdf/asj-2022-0020.pdfadolescent idiopathic scoliosisshoulder balancecoronal balancecomplicationslenke type 1 |
| spellingShingle | Tomohiro Banno Yu Yamato Tomohiko Hasegawa Go Yoshida Hideyuki Arima Shin Oe Yuki Mihara Koichiro Ide Yuh Watanabe Kenta Kurosu Keiichi Nakai Yukihiro Matsuyama Preoperative Less Right Shoulder Elevation Had a Higher Risk of Postoperative Shoulder Imbalance When Main Thoracic Curve Shows Higher Correction Regardless of the Upper Instrumented Vertebra Level for Patients with Adolescent Idiopathic Scoliosis Lenke Type 1 Asian Spine Journal adolescent idiopathic scoliosis shoulder balance coronal balance complications lenke type 1 |
| title | Preoperative Less Right Shoulder Elevation Had a Higher Risk of Postoperative Shoulder Imbalance When Main Thoracic Curve Shows Higher Correction Regardless of the Upper Instrumented Vertebra Level for Patients with Adolescent Idiopathic Scoliosis Lenke Type 1 |
| title_full | Preoperative Less Right Shoulder Elevation Had a Higher Risk of Postoperative Shoulder Imbalance When Main Thoracic Curve Shows Higher Correction Regardless of the Upper Instrumented Vertebra Level for Patients with Adolescent Idiopathic Scoliosis Lenke Type 1 |
| title_fullStr | Preoperative Less Right Shoulder Elevation Had a Higher Risk of Postoperative Shoulder Imbalance When Main Thoracic Curve Shows Higher Correction Regardless of the Upper Instrumented Vertebra Level for Patients with Adolescent Idiopathic Scoliosis Lenke Type 1 |
| title_full_unstemmed | Preoperative Less Right Shoulder Elevation Had a Higher Risk of Postoperative Shoulder Imbalance When Main Thoracic Curve Shows Higher Correction Regardless of the Upper Instrumented Vertebra Level for Patients with Adolescent Idiopathic Scoliosis Lenke Type 1 |
| title_short | Preoperative Less Right Shoulder Elevation Had a Higher Risk of Postoperative Shoulder Imbalance When Main Thoracic Curve Shows Higher Correction Regardless of the Upper Instrumented Vertebra Level for Patients with Adolescent Idiopathic Scoliosis Lenke Type 1 |
| title_sort | preoperative less right shoulder elevation had a higher risk of postoperative shoulder imbalance when main thoracic curve shows higher correction regardless of the upper instrumented vertebra level for patients with adolescent idiopathic scoliosis lenke type 1 |
| topic | adolescent idiopathic scoliosis shoulder balance coronal balance complications lenke type 1 |
| url | http://www.asianspinejournal.org/upload/pdf/asj-2022-0020.pdf |
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