Details

Autor(en) / Beteiligte

• Nagamoto, Yukitaka
• Okuda, Shinya
• Matsumoto, Tomiya
• Takahashi, Yoshifumi
• Furuya, Masayuki
• Iwasaki, Motoki

Titel

Mid-Term Results of Single-Level Posterior Lumbar Interbody Fusion in Patients with Pelvic Incidence Minus Lumbar Lordosis Mismatch

Ist Teil von

• World neurosurgery, 2024-03, Vol.183, p.e796-e800

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2024

Quelle

MEDLINE

Beschreibungen/Notizen

• Recent literature suggests that sagittal imbalance is a risk factor for adjacent segment disease following fusion surgery. This study explored the influence of pelvic incidence minus lumbar lordosis (PI-LL) mismatch on the mid-term results and reoperation rate after single-level posterior lumbar interbody fusion (PLIF). The participants of this study included 253 patients (80 men and 173 women; mean age 68.2 years) who underwent L4-5 single-segment PLIF. Preoperative PI-LL mismatch was defined as a PI-LL of 30° or greater. The patients were divided into 2 groups according to the presence or absence of PI-LL mismatch (PI-LL mismatch group; group M, Control group; group C), and the clinical outcomes and radiographic parameters were compared. Of the 253 cases, 25 were classified in group M and 228 in group C. The Japanese Orthopaedic Association score at 5 years postoperatively was 23.0 ± 3.6 in group M and 23.5 ± 5.1 in group C, and the recovery rate was 66.2 ± 32.6% in group M and 64.6 ± 21.4% in group C and there was no significant difference in the recovery rate between the 2 groups. All radiographic parameters except sacral slope were significantly worse in group M. One patient (4.3%) in Group M and 18 patients (7.8%) in Group C required revision surgery at 2.4 years (range 0.0–5.0) and there was no significant difference in the revision rate between the 2 groups. The mid-term results of L4-5 single-level PLIF were compared with and without PI-LL mismatch, with the threshold defined as 30°; however, there were no significant differences in both the Japanese Orthopaedic Association recovery and reoperation rates between the 2 groups.