Fritzell (2003) — Complications in lumbar fusion surgery for chronic low back pain: Comparison of three surgical techniques used in a prospective randomized study. A report from the Swedish Lumbar Spine Study Group

Complications in Lumbar Fusion Surgery for Chronic Low Back Pain: Comparison of Three Surgical Techniques Used in a Prospective Randomized Study. a Report from the Swedish Lumbar Spine Study Group

·Eur Spine J·2003·270 citations·Spine

Multicenter RCT from the Swedish Lumbar Spine Study Group comparing complication and reintervention rates in 211 patients with chronic low back pain randomized to one of three lumbar fusion techniques: noninstrumented posterolateral fusion (PLF), instrumented posterolateral fusion (VSP), or circumferential 360-degree fusion — asking whether increased surgical complexity translates into higher morbidity and whether that morbidity affects outcomes.

Study Snapshot

Design

Multicenter RCT

Blinding: Open-label

Setting: 19 orthopedic departments, Sweden

Funding: Industry (Acromed, Ossano)

Objective

Whether complication rates differ across three lumbar fusion techniques for chronic low back pain

Outcome(s)

Complication rate by surgical group at 2 years

Subjects

211 chronic low back pain patients, 3 surgical groups

71Noninstrumented posterolateral fusion PLF
68Instrumented PLF + VSP pedicle screws
72PLF + VSP + interbody fusion circumferential '360'

Inclusion

Age 25–65, severe CLBP at L4–S1
Pain duration ≥2 years, failed conservative treatment
Degenerative changes on imaging, no nerve root compression

Exclusion

Isthmic spondylolisthesis, stenosis, fracture, infection, neoplasm
Prior spine surgery except uncomplicated discectomy >2 years prior
Ongoing psychiatric illness

Follow-up

2 years

Statistics

Stepwise logistic regressionChi-squared testMann-Whitney U-testKruskal-Wallis test

Key Findings

Complication rates scaled stepwise with surgical complexity — 12% (PLF) → 22% (VSP) → 40% (360°) (P=0.0003) — driven primarily by early complications, establishing the first prospective benchmark for fusion morbidity
The odds of experiencing any complication were dramatically technique-dependent:
–5.3× higher* for 360° vs PLF (95% CI 2.2–12.7)
–2.4× higher for 360° vs VSP (95% CI 1.1–5.3)
–VSP vs PLF did not reach significance — only surgical technique, not patient demographics or smoking, predicted complications
Reintervention rates were 6% (PLF), 22% (VSP), and 17% (360°); any instrumentation carried 4.0× higher odds of reintervention vs noninstrumented fusion (95% CI 1.3–11.9, P=0.020)
Despite markedly different complication profiles, no significant difference in clinical outcomes (pain, disability, global assessment) existed among groups at 2 years — and this held even after excluding patients who had complications (improvement rates 61% vs 69% vs 65%, P=0.72)
Approximately 9% of all patients had persistent or prolonged major morbidity attributable to a complication at 2 years, including 5 deep infections, 5 new cases of persistent nerve root pain, and 3 reoperated pseudarthroses

Clinical Relevance

This study's core finding remains clinically relevant today: more complex fusion techniques carry substantially higher complication rates without necessarily providing better outcomes.

When counseling patients about fusion options, residents should remember that the simplest effective technique may be the best choice, and that instrumentation and circumferential approaches significantly increase morbidity risk.

Complications in Lumbar Fusion Surgery for Chronic Low Back Pain: Comparison of Three Surgical Techniques Used in a Prospective Randomized Study. a Report from the Swedish Lumbar Spine Study Group

Study Snapshot

Key Findings

Clinical Relevance

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Complications in Lumbar Fusion Surgery for Chronic Low Back Pain: Comparison of Three Surgical Techniques Used in a Prospective Randomized Study. a Report from the Swedish Lumbar Spine Study Group

Study Snapshot

Key Findings

Clinical Relevance

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Complications in Lumbar Fusion Surgery for Chronic Low Back Pain: Comparison of Three Surgical Techniques Used in a Prospective Randomized Study. a Report from the Swedish Lumbar Spine Study Group

Study Snapshot

Key Findings

Clinical Relevance

Related Articles

Complications in Lumbar Fusion Surgery for Chronic Low Back Pain: Comparison of Three Surgical Techniques Used in a Prospective Randomized Study. a Report from the Swedish Lumbar Spine Study Group

Study Snapshot

Key Findings

Clinical Relevance

Related Articles