Why does your back squeak after spinal fusion?

The squeaking or creaking sounds you may hear or feel after spinal fusion surgery are due to the settling and fusion of the bone grafts and surgical hardware placed during the procedure. Here are some reasons why you might experience these sounds:

1. Bone Graft Resorption: During spinal fusion surgery, the surgeon may use bone grafts to help bridge the gaps between the vertebrae and promote fusion. As the bone graft heals, it undergoes a natural process called "remodeling" where the body breaks down old bone tissue and replaces it with new bone tissue. This remodeling can cause the bone graft to settle and shift slightly, producing clicking or squeaking sounds.

2. Hardware Movement: Surgical hardware, such as screws, rods, and plates, is often used to stabilize the spine during fusion surgery. As you move your back or engage in certain activities, these components may shift or rub against each other, creating creaking sounds.

3. Scar Tissue Formation: The surgical site goes through a healing process that involves the formation of scar tissue. Scar tissue can sometimes cause a rubbing or catching sensation, leading to squeaking sounds.

4. Natural Spine Movement: Even after fusion surgery, the spine still has some degree of flexibility and mobility. As the fused segments flex or move, the tissues and hardware may make contact, resulting in squeaking noises.

5. Changes in Body Mechanics: Post-surgery, you may experience certain changes in your body mechanics as your spine heals and adjusts to the new structure. These changes can affect how the vertebrae and other tissues interact, leading to occasional creaking sounds.

It's important to note that not everyone experiences these squeaking sounds after spinal fusion surgery. If the sounds are accompanied by pain, discomfort, or any concerning symptoms, it is essential to consult your doctor or surgeon for evaluation.