Pain After Hernia Repair: When the Nerves Are the Problem

Pain after hernia repair usually fades as you heal, but for some people groin pain lasts three months or more. When it does, one of the small nerves that runs through the repair area is often part of the cause. These nerves can be stretched, irritated or caught in scar tissue, mesh or sutures, and they can keep sending pain signals after the incision has closed. The first step is having your surgeon check the repair. Then the nerves, and the muscles guarding them, can be treated.

Why pain can outlast the healing

An incision can heal while a nerve stays irritated. Three nerves run through the area where inguinal hernias are repaired: the ilioinguinal, the iliohypogastric and the genital branch of the genitofemoral nerve. Any of them can be affected during or after surgery.

Once a nerve has been irritated for a while, it becomes more reactive. Then the muscles join in. The abdominal wall, the inner thigh muscles and the hip flexors tighten around the painful area, and that guarding adds its own pain on top of the nerve's.

The nerves in the groin

The ilioinguinal nerve starts in the upper lumbar spine, travels through the layers of the abdominal wall near the front of the hip bone, and passes through the inguinal canal. It supplies the skin of the groin, the upper inner thigh, and the base of the penis and scrotum in men, or the mons and outer labia in women. Because of that path, it is vulnerable during hernia repair. The ilioinguinal neuralgia page covers it in more detail.

The genital branch of the genitofemoral nerve also passes through the inguinal canal. It supplies the scrotum or labia and controls the cremaster muscle, which lifts the testicle. These nerves overlap in the groin, and sometimes more than one is involved.

How common it is

International hernia guidelines from 2018 define chronic pain after groin hernia repair as bothersome pain that affects daily activities and lasts at least three months. They put clinically significant chronic pain at about 10 to 12 percent of patients, decreasing over time. Pain severe enough to disrupt normal daily activities or work ranges from 0.5 to 6 percent.

Most people recover without lasting pain. If you did not, it is a recognized complication that deserves a proper look.

Healing soreness or nerve pain?

Surgical soreness usually eases as the weeks pass. Nerve pain tends to have a different feel:

• Burning, sharp or electric pain in the groin.
• Pain that spreads to the scrotum or labia, or into the inner thigh.
• Pain that is worse standing up straight or walking, and easier when you bend forward.
• Skin that is sensitive to clothing or a waistband.

What to ask your surgeon first

Your surgeon is the right first call, because the repair needs checking before anyone treats the area around it. These questions can help:

• Has a recurrence, or another problem with the repair, been ruled out?
• Was my repair open or laparoscopic, and was mesh used? Can I have a copy of the operative report?
• Does my pain fit a nerve pattern, and which nerve do you suspect?
• What options would you consider, and in what order?
• Am I cleared for hands-on care and dry needling around the area, and is there anything I should avoid?

Bring that operative report to your first visit with me as well. Knowing the repair type and where any mesh sits shapes where I work.

Where my care fits

Once your surgeon has cleared you, usually at least six weeks after repair, conservative care can begin. The first visit runs 60 to 75 minutes, and I trace each groin nerve to find the irritated one. Dry needling releases guarding in the abdominal wall, adductors and hip flexors, working carefully around the repair and avoiding the mesh. Alongside dry needling, I use neuro-functional acupuncture, built on neuroscience and evidence-based practice. Unlike regular electroacupuncture, the needles and gentle electrical stimulation are mapped to the specific nerves involved, such as the ilioinguinal, iliohypogastric and genitofemoral nerves. It works in three ways. It neurorehabilitates, helping irritated tissues and nerve receptors recover. It neuromodulates, shifting the body's own pain-relieving chemistry. It neuroregulates, calming the nerve signals and circuits that keep groin pain going after surgery. Results vary from person to person, and I coordinate with your surgeon.

If you are not sure what is causing your pain, try the My Symptoms tool.