Article Figures & Data
Figures
- Fig. 1
Preoperative plain X-ray. Anteroposterior and lateral views of patient 1 showing L3-5 PLIF without autologous bone graft. Subsidence of the intervertebral spacer and loosening of the pedicle screws are evident.
- Fig. 2
Preoperative CT demonstrating severe loosening of the pedicle screws at L3 and L5.
- Fig. 3
The navigation system's views provide 3-dimensional, coronal, parasagittal, and axial images in conjunction with the different trajectory pedicle screw at L5. The alternative pedicle screw penetrating the existing pedicle hole is visible.
- Fig. 4
Postoperative plain X-ray anteroposterior and lateral views of patient 1 showing transforaminal lumbar interbody fusion at the same segments.
- Fig. 5
Postoperative CT demonstrating different trajectory pedicle screw replacement at L3 and L5 according to the preoperative plan. The arrow indicates hydroxyapatite granules inserted into the existing pedicle hole.
Tables
Age/Sex Initial surgery Preoperative JOA score Salvage surgery DT pedicle screw Postoperative JOA score (Recovery rate)* Follow-up period (M) Bony union 1 38/Man PLIF (L3-5) 11 TLIF (L3-5) L3,5 26 (83.3) 18 + 2 70/Man PLF (L4-5) 18 TLIF (L4-5) L5 25 (63.6) 24 + 3 72/Woman PLIF (L2-S) 15 TLIF (L4-S) S1 20 (35.7) 29 + 4 82/Man PLF (L4-S) 12 TLIF (L2-S) S1 19 (41.2) 27 + 5 70/Man PLF (L1-S) 8 TLIF (L1-S) S1 19 (52.4) 18 + Abbreviations: PLF, Lumbar posterolateral fusion; TLIF, Transforaminal lumbar interbody fusion; DT, Different trajectory; JOA Score, Japanese Orthopaedic Association Score.
Recovery rate = [Postoperative score–Preoperative score]/[29 (Full score)–Preoperative score] × 100).
↵* At final follow-up.
In this issue
Jump to section
Related Articles
Cited By...
- No citing articles found.