Treatment

Spinal Fusion: Posterior Lumbar

Choose a preferred language

Fusing vertebrae in the lumbar spine may help ease lower back and leg pain. Spinal fusion is fusing two or more vertebrae together so they heal into a single, solid bone. The goal of spinal fusion is to reduce or eliminate painful motion and restore the stability of the spine. Posterior lumbar fusion is done through an incision in your back. Spacers and/or a bone graft are put between the vertebrae. Depending on how many vertebrae are fused, the surgery may take from 3 to 8 hours.

Side view of lumbar vertebrae.


Fusing the transverse processes

Fusion has several steps:

  • The bone graft is packed between the transverse processes (“wings”) on the sides of the vertebrae. This procedure is called posterolateral fusion.

  • To help keep your spine steady and promote fusion, extra support may be used such as titanium screws and rods. Sometimes, bone cement is added around the screws.

  • A wound drain is often placed in the wound and left in for a few days.

  • The incision is closed with stitches (sutures) or staples.

    Back view of lumbar vertebrae showing bone graft between transverse processes.


Fusing the disk space

This involves the following:

  • An incision is made in the middle of or on each side of your spine.

  • The disk between the vertebrae is removed. This procedure is known as posterior lumbar interbody fusion (PLIF).

  • A bone graft, a spacer (cage), or both are placed in the now-empty disk space between the vertebrae. In time, the graft or spacer and the bone will grow into a solid unit.

  • To help keep your spine steady and promote fusion, metal screws, and rods may be placed to provide extra support and promote healing. Sometimes, bone cement is added around the screws.

  • A wound drain is often placed in the wound and left in for a few days.

  • The incision is then closed with stitches or staples.

    Cross section of lumbar vertebrae showing bone graft between vertebrae.Cross section of lumbar vertebrae showing fused bone between vertebrae.

Online Medical Reviewer: Anne Fetterman RN BSN

Online Medical Reviewer: Heather M Trevino BSN RNC

Online Medical Reviewer: Vinita Wadhawan Researcher

Date Last Reviewed: 03/01/2024

© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
Suitcase Icon

Learn More About Health Services at PIH Health

Expert care for every stage of life. Explore the comprehensive services offered at PIH Health.

Explore Services
Newspaper Icon

Get Health Tips & Updates

Sign up for helpful health information, wellness tips and news from PIH Health, delivered straight to your inbox.

Subscribe
Related Articles
Read article
Orthopedics
Hip Arthroscopy: Labral Tears

Arthroscopy can be used to repair tears in the strong, flexible ring of cartilage attached to the edge of the hip socket, called the labrum.

Read article
Orthopedics
Splints and Casts

Splints and casts are used to help support and protect a variety of bone and soft tissue injuries. They keep an injured area from moving.

Read article
Orthopedics
Hip Arthroscopy: After Surgery

Know what to expect after arthroscopy on your hip.

Read article
Orthopedics
Knee Arthroscopy: Conditions Treated

Arthroscopy is used to find and treat knee problems. These include tears in the meniscal cartilage, joint loose bodies, or anterior cruciate ligament (ACL) tears.

Stethoscope Icon

Personalized Care Starts with the Right Provider

Search by specialty, location, and more.

Find A Doctor
Appointments Icon

Make an Appointment

Your health can't always wait. Schedule an appointment with a PIH Health provider.

Schedule an Appointment
Cross Icon

Find a PIH Health Urgent Care Location

Need care today?. Find the nearest PIH Health Urgent Care location.

Find Urgent Care