The Researchers are trying to determine if there is a difference in blood flow around a wound site when comparing three different types of wound closure techniques.

Inclusion Criteria:

• ≥ 18 years old
• Primary diagnosis of spinal stenosis
• Surgical indication for 1 or 2 level posterior spinal decompression or fusion

Exclusion Criteria:

• Pregnant or Breastfeeding
• Previous posterior spinal surgery
• Systemic corticosteroid use
• Long-term anticoagulation treatment
• Diagnosis of diabetes mellitus
• Diagnosis of peripheral arterial disease
• Current smoker
• Active infection of any kind or chronic infection with HIV, Hepatitis C, or Syphilis
• Iodine Allergy