Characteristics analysis of segmental and regional lumbar spontaneous compensation post thoracic fusion in Lenke 1 and 2 adolescent idiopathic scoliosis

Chen, Kai; Zhai, Xiao; Zhou, Tianjunke; Deng, Yu; Zhang, Beichen; Chen, Shaofeng; Yang, Chen; Li, Ming

doi:10.1186/s12891-021-04821-5

Cited by 1 publication

(2 citation statements)

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“…Gebrelul et al [ 5 ] reported 102 AIS patients undergoing STF using all-screw constructs, and the average rate of spontaneous correction of the TL/L curve was 43% at the 2-year follow-up. Chen et al [ 16 ] showed a spontaneous correction rate of more than 70% of the TL/L curves for Lenke 1 and 2 AIS patients. Similar results were reported over a wide range of studies [ 7 , [ 8 ], [ 12 ], [ 14 ], 17 – 19 ].…”

Section: Discussionmentioning

confidence: 99%

“…Similar results were noted by researchers in China. Chen et al [ 16 ] found that when choosing L1 as the LIV, the distal unfused lumbar segments’ compensation tended to decrease from the proximal end to the distal end, suggesting that the L1/2 and L2/3 discs significantly contributed to this compensation. These two studies focused on the difference in compensation between the upper and lower lumbar segments, but neither identified the risk factors for correction loss during the long-term follow-up nor explored the relationship between thoracic and TL/L curve magnitude.…”

Section: Discussionmentioning

confidence: 99%

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Satisfactory immediate spontaneous correction may not mean satisfactory final results for moderate TL/L curves after selective thoracic fusion in AIS patients

Zhang

Bai²,

Xiao

et al. 2023

BMC Musculoskelet Disord

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Background Few studies have focused on the chronic spontaneous behavior of the unfused TL/L curve during follow-up. The purpose of the present study was to explore the behavior of the unfused TL/L curve during a long-term follow-up to identify the risk factors for correction loss. Methods Sixty-four age-matched female AIS patients undergoing selective thoracic fusion were enrolled. Patients were divided into 2 groups according to whether there was correction loss. Risk factors for correction loss of the unfused TL/L curves were analyzed. The relationship and difference between the immediate postoperative thoracic and TL/L Cobb angles were explored. Results The TL/L Cobb angle was 28.17° before surgery, 8.60° after surgery, and 10.74° at the final follow-up, with a correction loss of 2.14°. Each subgroup contained 32 cases. A smaller postoperative TL/L Cobb angle was the only risk factor that was independently associated with TL/L correction loss. In the LOSS group, there was a significant difference and no correlation between the immediate postoperative TL/L and the thoracic Cobb angle. In the NO-LOSS group, there was a moderate correlation and no difference between them. Conclusion A smaller immediate postoperative TL/L Cobb angle may have been associated with TL/L correction loss during the long-term follow-up. Thus, good immediate postoperative spontaneous correction may not mean a satisfactory outcome at the final follow-up after STF. Mismatch between thoracic and TL/L Cobb angles immediately after surgery may also be related to correction loss of the unfused TL/L curves. Close attention should be paid in case of deterioration.

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