ALIF versus TLIF for post-discectomy syndrome

Area of Science:

• Spine Surgery
• Orthopedics
• Neurosurgery

Background:

• Post-discectomy syndrome (PDS) presents a significant challenge in spinal surgery, often requiring revision procedures.
• Lumbar interbody fusion techniques, including ALIF and TLIF, are employed to address persistent PDS symptoms.
• Comparing the efficacy and safety of different fusion approaches is crucial for optimizing patient outcomes.

Purpose of the Study:

• To determine if anterior lumbar interbody fusion (ALIF) is superior to transforaminal lumbar interbody fusion (TLIF) for treating post-discectomy syndrome (PDS).
• To compare clinical outcomes, complication rates, and long-term results between ALIF and TLIF in PDS patients.

Main Methods:

• Retrospective analysis of 83 patients with PDS refractory to conservative treatment.
• 46 patients underwent ALIF (retroperitoneal approach), and 37 underwent TLIF, both augmented with pedicle screw instrumentation.
• Evaluation included complication registration, patient satisfaction, pain levels, medication use, and work ability via telephone follow-up.

Main Results:

• Both ALIF and TLIF significantly improved back and leg pain (p < 0.01) with high patient satisfaction (75.8% ALIF, 73.3% TLIF).
• No significant difference in overall outcomes was observed between the ALIF and TLIF groups.
• Complications varied, with ALIF having risks like major vessel bleeding and abdominal wall insufficiency, while TLIF carried risks of nerve root injury. Fewer fusion extensions were needed in the ALIF group.

Conclusions:

• Both ALIF and TLIF are effective surgical options for PDS, yielding similarly good results.
• The choice between ALIF and TLIF requires balancing ALIF's technical advantages against its increased approach-related morbidity and operative time.
• ALIF may be associated with a reduced incidence of adjacent segment disease compared to TLIF in the long term.