Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis
Purpose To investigate the relationship between preoperative and postoperative spinopelvic alignment and occurrence of DJK/DJF. Study design/setting This was a retrospective observational cohort study. Patient sample The sample included 40 patients who underwent posterior correction o...
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| Format: | Article |
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Springer Verlag
2016
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| Online Access: | https://eprints.nottingham.ac.uk/39772/ |
| _version_ | 1848795910658588672 |
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| author | Ghasemi, Amir Stubig, Timo Nasto, Luigi A. Ahmed, Malik Mehdian, Hossein |
| author_facet | Ghasemi, Amir Stubig, Timo Nasto, Luigi A. Ahmed, Malik Mehdian, Hossein |
| author_sort | Ghasemi, Amir |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Purpose
To investigate the relationship between preoperative and postoperative spinopelvic alignment and occurrence of DJK/DJF.
Study design/setting
This was a retrospective observational cohort study.
Patient sample
The sample included 40 patients who underwent posterior correction of SK from January 2006 to December 2014.
Outcome measures
Correlation analysis between the preoperative and postoperative spinopelvic alignment parameters and development of DJK over the course of the study period were studied.
Methods
Whole spine X-rays obtained before surgery, 3 months after surgery and at the latest follow-up were analyzed. The following parameters were measured: maximum of thoracic kyphosis (TK), lumbar lordosis (LL), sagittal vertical axis (SVA), pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), lower instrumented vertebra (LIV) and LIV plumb line. Development of DJK was considered as the primary end point of the study. The patient population was split into a control and DJK group, with 34 patients and 6 patients, respectively. Statistic analysis was performed using unpaired t test for normal contribution and Mann–Whitney test for skew distributed values. The significance level was set to 0.05.
Results
DJK occurred in 15% (n = 6) over the study period. There was a significantly lower postoperative TK for the group with DJK (42.4 ± 5.3 vs 49.8 ± 6.7, p = 0.015). LIV plumb line showed higher negative values in the DJK group (−43.6 ± 25.1 vs −2.2 ± 17.8, p = 0.0435). Furthermore, postoperative LL changes were lower for the DJK group (33.84 ± 13.86% vs 31.77 ± 14.05, p < 0.0001.) The age of the patients who developed DJK was also significantly lower than that of the control group (16.8 ± 1.7 vs 19.6 ± 4.9, p = 0.0024.)
Conclusions
SK patients who developed DJK appeared to have a significantly higher degree of TK correction and more negative LIV plumb line. In addition, there may be a higher risk for DJK in patients undergoing corrective surgery at a younger age. |
| first_indexed | 2025-11-14T19:39:36Z |
| format | Article |
| id | nottingham-39772 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:39:36Z |
| publishDate | 2016 |
| publisher | Springer Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-397722020-05-04T18:23:26Z https://eprints.nottingham.ac.uk/39772/ Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis Ghasemi, Amir Stubig, Timo Nasto, Luigi A. Ahmed, Malik Mehdian, Hossein Purpose To investigate the relationship between preoperative and postoperative spinopelvic alignment and occurrence of DJK/DJF. Study design/setting This was a retrospective observational cohort study. Patient sample The sample included 40 patients who underwent posterior correction of SK from January 2006 to December 2014. Outcome measures Correlation analysis between the preoperative and postoperative spinopelvic alignment parameters and development of DJK over the course of the study period were studied. Methods Whole spine X-rays obtained before surgery, 3 months after surgery and at the latest follow-up were analyzed. The following parameters were measured: maximum of thoracic kyphosis (TK), lumbar lordosis (LL), sagittal vertical axis (SVA), pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), lower instrumented vertebra (LIV) and LIV plumb line. Development of DJK was considered as the primary end point of the study. The patient population was split into a control and DJK group, with 34 patients and 6 patients, respectively. Statistic analysis was performed using unpaired t test for normal contribution and Mann–Whitney test for skew distributed values. The significance level was set to 0.05. Results DJK occurred in 15% (n = 6) over the study period. There was a significantly lower postoperative TK for the group with DJK (42.4 ± 5.3 vs 49.8 ± 6.7, p = 0.015). LIV plumb line showed higher negative values in the DJK group (−43.6 ± 25.1 vs −2.2 ± 17.8, p = 0.0435). Furthermore, postoperative LL changes were lower for the DJK group (33.84 ± 13.86% vs 31.77 ± 14.05, p < 0.0001.) The age of the patients who developed DJK was also significantly lower than that of the control group (16.8 ± 1.7 vs 19.6 ± 4.9, p = 0.0024.) Conclusions SK patients who developed DJK appeared to have a significantly higher degree of TK correction and more negative LIV plumb line. In addition, there may be a higher risk for DJK in patients undergoing corrective surgery at a younger age. Springer Verlag 2016-12-31 Article PeerReviewed Ghasemi, Amir, Stubig, Timo, Nasto, Luigi A., Ahmed, Malik and Mehdian, Hossein (2016) Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis. European Spine Journal . pp. 1-8. ISSN 1432-0932 Scheuermann’s kyphosis Distal junctional kyphosis (DJK) Sagittal balance Spinopelvic parameters Junctional failure http://link.springer.com/article/10.1007%2Fs00586-016-4924-3 doi:10.1007/s00586-016-4924-3 doi:10.1007/s00586-016-4924-3 |
| spellingShingle | Scheuermann’s kyphosis Distal junctional kyphosis (DJK) Sagittal balance Spinopelvic parameters Junctional failure Ghasemi, Amir Stubig, Timo Nasto, Luigi A. Ahmed, Malik Mehdian, Hossein Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis |
| title | Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis |
| title_full | Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis |
| title_fullStr | Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis |
| title_full_unstemmed | Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis |
| title_short | Distal junctional kyphosis in patients with Scheuermann’s disease: a retrospective radiographic analysis |
| title_sort | distal junctional kyphosis in patients with scheuermann’s disease: a retrospective radiographic analysis |
| topic | Scheuermann’s kyphosis Distal junctional kyphosis (DJK) Sagittal balance Spinopelvic parameters Junctional failure |
| url | https://eprints.nottingham.ac.uk/39772/ https://eprints.nottingham.ac.uk/39772/ https://eprints.nottingham.ac.uk/39772/ |