Patient-reported outcomes 1 and 2 years after transforaminal thoracic interbody fusion (TTIF)
European Spine Journal(2024)
摘要
Study design Retrospective Cohort Study with prospectively collected data. Purpose Transforaminal interbody fusion was initially designed for the lumbar spine. A similar approach was later introduced for the thoracic spine (TTIF). Here we report the surgical technique and the Core Outcome Measures Index (COMI) at 1-year and 2-year follow-ups, as well as the sagittal radiographic kyphosis correction of TTIF, achieved at 1 year and the latest follow-up. Methods All TTIF procedures from 2012 to 2020 were included. COMI scores were collected preoperatively and at 1- and 2-year follow-ups. The sagittal angle between the upper and lower endplates at the segment where TTIF was performed was measured on preoperative, 1-year postoperative, and last available radiographs. Results Seventy-nine TTIF procedures were performed for 64 patients (36% males; mean age 67.5 (SD 15.3) years). COMI score reduced from a mean value of 8.1 (SD 1.4) preoperatively to 4.7 (SD 2.7) at 1-year follow-up and 4.7 (SD 2.7) at 2-year follow-up. The mean correction of segmental kyphosis was 10.8 (SD 7.3, p < 0.0001) degrees at 1-year follow-up and 9.3 (SD 7.0, p < 0.0001) degrees at the final follow-up 3.4 (SD 1.4) years after the operation. Kaplan–Meier analysis for reoperations showed a 5-year survival of 91% (95% CI 0.795–1) for primary TTIF operations and survival of 77% (95% CI 0.651–0.899) for TTIFs performed after earlier fusion operations. Conclusions TTIF is a feasible procedure in the thoracic spine. Kyphosis correction of approximately 10° was maintained at 1-year and final follow-up. Over 69% at 1-year and 61% at 2-year follow-up achieved MCID for COMI.
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关键词
Transforaminal thoracic interbody fusion,TTIF,Kyphosis correction,Patient-reported outcome measure,COMI,Interbody fusion
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