Post-Surgical Pain: When Pain Persists After Surgery
Surgery is meant to relieve pain — but for a significant proportion of patients, it doesn't achieve that goal, and sometimes makes pain worse. This is one of the most frustrating situations in medicine, and I see many patients in this situation.
Chronic post-surgical pain — defined as pain persisting beyond 3 months after surgery — affects 10–40% of patients depending on the procedure. Understanding why it happens and what can be done is essential.
Why Does Pain Persist After Surgery?
Several mechanisms can cause or perpetuate pain after surgery:
Nerve injury: Surgical dissection, retraction, sutures, or scarring can injure peripheral nerves — causing neuropathic pain in the distribution of the affected nerve.
Central sensitization: Significant acute post-operative pain that's inadequately controlled can drive central sensitization — the nervous system becomes "wound up" and amplifies pain signals even after tissue has healed.
Scar tissue (adhesions/fibrosis): Post-surgical fibrosis can compress or tether nerves and other structures.
Inadequate treatment of the original problem: Failed back surgery syndrome often occurs when the wrong level was fused, the procedure didn't adequately address nerve compression, or the primary pain generator was missed pre-operatively.
New structural changes: Adjacent segment disease after spinal fusion — degeneration at levels above or below a fusion — is a common cause of ongoing pain after successful surgery at the original level.
Treatment Approaches
Epidural Steroid Injections: For post-surgical radicular pain, targeted epidural injections can reduce inflammation around neural structures affected by post-operative fibrosis or adjacent segment disease.
Spinal Cord Stimulation: SCS is the most strongly evidence-supported treatment for failed back surgery syndrome — achieving better outcomes than repeat surgery in randomized trials. I consider SCS early for patients with persistent pain after lumbar surgery.
Peripheral Nerve Blocks and Ablation: For neuropathic pain in specific nerve distributions after surgery (post-thoracotomy pain, post-mastectomy pain, inguinal hernia repair neuralgia), targeted nerve blocks and ablation can provide significant relief.
Ketamine Infusion: For central sensitization after surgery — particularly when opioids are less effective than expected — ketamine can reset central pain pathways.
IT Pump: For severe post-surgical pain unresponsive to other measures, an intrathecal drug delivery pump can achieve superior pain control at lower medication doses.
My Message
Post-surgical pain is not a moral failure or inevitable outcome — it's a medical condition with identifiable causes and effective treatments. If your pain persists after surgery, don't resign yourself to it. Call 516-492-3100 to discuss what can be done.