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Medically reviewed by Jacob B. Archer, M.D., MBA — Board-certified neurosurgeon · Neuroscience Specialists · Oklahoma City, OK · Updated May 15, 2026 · For educational purposes only.

What Is 360° Circumferential Lumbar Fusion?

Anterior/Posterior Lumbar Fusion — also called a 360-degree or circumferential fusion — combines two surgical approaches to maximize construct stability and fusion rate. The anterior approach (front or side of the abdomen) allows direct disc removal and placement of a large interbody cage for optimal structural support. The posterior approach adds pedicle screw fixation and nerve decompression, completing a full 360-degree construct. This combined approach is used when maximum stability is needed — for severe instability, deformity correction, revision surgery, or failed prior fusions.

Common Indications

Severe spondylolisthesis requiring both anterior disc support and posterior stabilization
Revision after failed prior lumbar fusion
Adjacent segment disease requiring expansion of a prior construct
Lumbar deformity with sagittal imbalance
Multilevel degenerative disc disease requiring maximum construct stability

Circumferential fusion combining anterior interbody support with posterior pedicle screw fixation achieves overall fusion rates of approximately 90–93%, with large registry data demonstrating lower symptomatic nonunion rates compared to posterior-only constructs in selected patients, particularly at L5-S1 and in multilevel cases (Norheim et al., Spine J 2021; Piazzolla et al., Musculoskelet Surg 2020).

Alternatives to Surgery

Surgery is one option for managing your condition. Not all alternatives are appropriate for every patient — their suitability depends on your specific diagnosis, symptoms, and prior treatment history.

Posterior-only fusion (TLIF or posterior lumbar fusion) — a less extensive option avoiding the anterior approach
Epidural steroid injections or selective nerve root blocks
Oral medications — anti-inflammatory agents, neuropathic pain medications
Spinal cord stimulation — for chronic pain management in selected patients
Continued conservative care — physical therapy, massage, chiropractic, and activity modification
No surgery — with understanding that instability or deformity may persist or worsen

Choosing not to have surgery is always an option. Your surgeon has discussed what you can expect if you decide not to proceed, including the possibility that symptoms may persist, worsen, or in some cases improve without surgery.

What Happens During Surgery

This surgery combines two approaches — anterior (front) and posterior (back) — which may be performed in a single session or staged over two days. Total operative time is typically 3–6+ hours.

Anterior Stage — ALIF

You are positioned on your back. A vascular or access surgeon assists through an abdominal or retroperitoneal approach.
The bowel and major blood vessels are carefully mobilized to expose the front of the lumbar spine.
The disc is fully removed and a large interbody cage filled with bone graft (usually a biologic bone-forming agent) is placed for maximum footprint and structural support.
The incision is closed and you are repositioned for the posterior stage.

Posterior Stage — Pedicle Screw Fixation

You are repositioned face-down. A posterior incision is made along the spine.
Pedicle screws are placed at the fusion levels and connected with rods, completing the 360-degree construct.
Nerve decompression is performed at any compressed levels.
Additional bone graft — autologous bone from surgery, cadaver bone, and/or biologic bone-forming agents — is placed posteriorly. The wound is closed with drains placed.

Risks of Surgery

About This Risk List
The risks listed below represent those most associated with this procedure. This list is not all-inclusive. All surgical procedures carry the potential for rare, unforeseen, or individualized complications that cannot be fully anticipated in advance and not all complications both medical and surgical can be discussed as the list would be infinite. Your surgeon has discussed the risks most relevant to your specific situation.

General Surgical Risks

Vascular injury to the aorta or iliac vessels (anterior approach)
Bowel, bladder, kidney, ureter, or abdominal injury (anterior approach)
Ileus — post-operative bowel slowdown (common after anterior approach)
Hernia at the anterior incision site
Infection — superficial or deep wound, epidural abscess, meningitis
Significant blood loss or transfusion
Blood clots (DVT or pulmonary embolism)
Stroke
Heart attack
Paralysis
Death
Adverse anesthesia reaction
Pneumonia or urinary tract infection
Corneal abrasion or blindness
Ulnar nerve, median nerve, or brachial plexus injury from positioning
Wound complications from two incisions

Procedure-Specific Risks

Retrograde ejaculation in males — 10–15% at L5-S1 anterior approach
Nerve root and/or spinal cord injury — sensory changes, weakness, or paralysis (temporary or permanent)
Dural tear — CSF leak that may require additional surgery for closure
Hardware failure — rod or pedicle screw loosening, fracture, or malposition
Failed fusion (pseudarthrosis)
Adjacent segment disease
Wrong level
Bone fracture — vertebral, sacral, or pelvic
Unforeseen metal allergy
Hardware prominence or pain — may require hardware removal as a separate procedure
Epidural fibrosis (scar tissue) causing persistent symptoms
Loss of bowel, bladder, or sexual function
Symptoms may be unchanged, worse, new, or different after surgery
Additional surgery for any noted or unforeseen complications

Retrograde Ejaculation: Male patients undergoing an L5-S1 anterior approach have a 10–15% risk of retrograde ejaculation — semen traveling backward into the bladder rather than forward. This is not harmful to your health but can affect fertility. Discuss this with your surgeon before surgery. Many cases improve over time.

Outcomes & Expectations: Surgery aims to relieve nerve compression and stabilize the spine where applicable. It does not guarantee relief of all pain or symptoms. Individual outcomes vary based on diagnosis, health status, duration of symptoms, and other factors. No specific result has been promised or guaranteed.

Your Hospital Stay

Typically 1–3 nights. Complex or two-stage cases may require longer. Close monitoring after combined surgery is standard.

Timeframe	What to Expect
Day of surgery	Close monitoring. IV pain management. Foley catheter typically removed the day of surgery or by morning of post-op day 1. Bowel function monitored — ileus is common after anterior approach.
Day 1	Walking begins when medically stable. Diet advanced carefully as tolerated.
Days 2–3	Advancing mobility. Transition to oral pain medications. Both incisions assessed.

No Brace Required. The 360-degree construct provides maximum internal stabilization. External bracing is not routinely needed. Your surgeon will advise if a brace is recommended for your specific case.

Recovery at Home

Spine Precautions — First 6 Weeks: B No Bending | L No Lifting more than 10 lbs (first month) | T No Twisting.
It is OK for obvious reasons to carefully bend, twist, and turn to get on and off the toilet or in and out of bed. Restrictions adjusted at each follow-up visit.

Two Incisions: You have both an abdominal incision (anterior) and a back incision (posterior). Both require wound care. Monitor both sites for infection and report any concerns to our office.

Activity Timeline

Weeks 1–2: Rest, short walks. Diet as tolerated. No lifting more than 10 lbs.
Weeks 2–4: Increase walking daily. Light activities. No driving on opioids.
Weeks 4–8: Desk work with breaks. Continue daily walking.
Months 2–3: Return to non-physical activities.
Months 3–6: Progressive activity based on imaging and clinical assessment.
Months 6–12+: Return to demanding activities with fusion confirmation.

Walking Is Your Most Important Recovery Exercise. Begin walking as soon as safely able and build distance daily. Walking promotes circulation, reduces clot risk, speeds healing, and rebuilds strength.
Days 1–7: 5–10 minute walks several times a day | Weeks 2–4: 15–30 minutes once or twice daily | After 1 month: increase duration and pace as tolerated.

Preventing Blood Clots at Home. Walk every day. Avoid sitting or lying still for long periods. Stay well hydrated (6–8 glasses daily). Go to the ER immediately if you develop calf pain, leg swelling, redness, chest pain, or shortness of breath.

Avoid NSAIDs After Fusion Surgery. Do not take ibuprofen (Advil, Motrin), naproxen (Aleve), aspirin for pain relief, or any prescription anti-inflammatory for at least 3 months after fusion. These medications interfere with bone healing and can prevent fusion. If you need pain relief beyond acetaminophen, contact our office before taking any anti-inflammatory.

Return to Work — Typical Timelines

Work Type	Typical Timeline	Examples
Sedentary / Desk Work	2–4 weeks	Office, computer, phone, remote work
Light Duty	6–8 weeks	Standing, walking, lifting 10–20 lbs
Moderate / Heavy Labor	4–6+ months	Construction, trades, patient care, heavy lifting

All timelines are estimates. Your surgeon will provide formal work release at follow-up based on your progress.

Wound Care

Keep the incision clean and dry for the first 48–72 hours after discharge.
You may shower after 48 hours — allow water to run gently over the area. Do not scrub.
Do not submerge in a bathtub, pool, or hot tub until cleared by your surgeon (typically 4–6 weeks).
Steri-strips should fall off on their own over 7–10 days. Do not remove them.
Dissolvable sutures do not need removal. External sutures or staples are removed at your 2-week visit.
Monitor for signs of infection and call our office promptly if you have concerns.

Medications at Discharge

Opioid pain medication — Use only as needed for pain not controlled by other measures. Do not drive, operate machinery, or consume alcohol while taking opioids. Short-term use only (1–2 weeks typical).
Muscle relaxer — Helps reduce painful muscle spasm. May cause drowsiness.
Stool softener (docusate) — Take while using opioids to prevent constipation. Drink 6–8 glasses of water daily.
Acetaminophen (Tylenol) — Do not exceed 3,000 mg/day. Do not take additional Tylenol-containing products concurrently.

Opioids are for short-term use only — typically 1–2 weeks. Taper as pain allows. Do not request early refills. Dispose of unused medication safely at a pharmacy take-back program.

Follow-Up Schedule

Visit	What to Expect
2 Weeks	Wound check, suture or staple removal, early recovery questions
1 Month	Clinical assessment, neurological check, activity advancement, driving clearance
3 Months	Clinical assessment, fusion or healing progress review, return-to-work discussion, address ongoing symptoms
9–12 Months	Late follow-up: confirm final outcome; imaging ordered only if symptoms or concerns arise

Warning Signs

For urgent concerns outside of office hours, call (405) 748-3300 — our answering service is available 24 hours a day, 7 days a week.

Warning Sign	What To Do
Fever above 101.5°F	Call our office immediately
Increasing redness, warmth, swelling, or discharge at either incision	Call our office immediately
Severe or rapidly worsening pain not controlled by medication	Call our office immediately
New or worsening weakness or numbness in the legs	Go to the Emergency Room or call our office immediately
Loss of bowel or bladder control	Go to the Emergency Room — urgent
Calf pain, swelling, or redness (possible blood clot)	Go to the Emergency Room immediately
Difficulty breathing or chest pain	Call 911 immediately
Abdominal distension or inability to pass gas beyond 4 days	Call our office — possible prolonged ileus
Sudden severe abdominal or groin pain	Go to the ER — possible vascular complication
New or worsening leg weakness or neurological change	Go to the ER or call our office immediately

The information on this page is for general educational purposes only and does not constitute medical or legal advice. Consult your surgeon regarding your specific condition, treatment plan, and recovery.

Anterior / Posterior Lumbar Fusion