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03 / General Surgery · open

Open inguinal hernia repair (Lichtenstein)

Tension-free mesh repair of the commonest surgical lesion, built on knowing the canal better than the hernia does.

Indication: Symptomatic inguinal hernia; urgently when incarcerated, emergently when strangulation is suspected.

Part of General Surgery →5 stages2 complications to knowopen
The inguinal region: the anatomy the repair is built on
Mikael Häggström · Public domain

On the tray for this operation

Test yourself on the tray

Stage

1 / 5

Opening the canal

Groin incision, then the external oblique aponeurosis is opened along its fibres from the external ring.

🔧 Scalpel🔧 Metzenbaum scissors🔧 Adson forcepsExplore anatomy: Inguinal canal & Hesselbach's triangle

Watch for: Ilioinguinal nerve injury, the commonest cause of chronic post-hernia pain

Why are we operating?

The Lichtenstein repair fixes an inguinal hernia by physics rather than force: instead of pulling tissues together under tension, a mesh is laid over the canal's floor so the repair borrows strength from a prosthesis and scar tissue rather than from sutures fighting anatomy. Tension-free is the whole idea, and the reason recurrence rates fell when it arrived.

Pulls toward surgery

Symptomatic inguinal herniaHernias with episodes of incarcerationEnlarging hernias in active patientsRepair after successful reduction of an incarcerated hernia

Gives the team pause

The asymptomatic hernia in the frail (watchful waiting is legitimate)Strangulation (a different, urgent operation through a different lens)Infection risk contexts for meshChronic groin pain as a real, consented risk

What the surgeon is thinking

  • Opening the canal

    Why is opening the canal mostly a nerve exercise?

    The ilioinguinal and iliohypogastric nerves live exactly where the external oblique opens, and the genital branch travels with the cord: the operation's commonest lasting complication is not recurrence but chronic pain, so the nerves are identified to be protected, and any nerve that cannot be protected is handled deliberately rather than left in the mesh's path.

  • Cord and sac

    Why does indirect versus direct matter to the dissection?

    An indirect sac travels inside the cord through the deep ring and must be dissected off the vas and vessels; a direct hernia bulges through the floor behind the cord and mostly needs reduction rather than dissection. Naming which it is decides where the careful minutes are spent.

  • Tension-free mesh

    What makes the mesh placement 'tension-free', and why does that matter?

    The mesh is laid over the floor with generous overlap, slit around the cord, and fixed without pulling anything toward anything: the repair strength comes from fibrous ingrowth through the mesh over weeks. Tension was the old repairs' failure mode, sutures tearing through under load, and its absence is why patients mobilise the same day.

  • Closure

    Why recreate the ring around the cord rather than close snugly?

    The cord's contents need room for life: a reconstructed deep ring that admits the cord plus a fingertip protects the testicle's supply, while a tight one trades recurrence risk for ischaemic orchitis, a bad exchange.

Decision points

  • Local, regional or general anaesthesia for an elective Lichtenstein?

    • Local anaesthetic

      The operation was designed for it: day-case, cough-test the repair awake, and the frail avoid a general entirely.

    • General anaesthesia

      For the anxious, the bilateral, the large or the re-do: comfort and relaxation bought with an anaesthetic's overhead.

    That this operation can be done under local is not trivia, it is a statement about tension-free surgery: nothing is pulled hard enough to need paralysis. The choice is about the patient, not the repair.

  • A nerve lies directly across the mesh's territory and cannot be mobilised clear.

    • Pragmatic neurectomy

      A deliberately divided, proximally buried nerve produces predictable numbness; a nerve entrapped in mesh produces unpredictable pain.

    • Re-route the repair around it

      Sometimes possible, and worth the minutes when it is.

    Chronic post-herniorrhaphy pain outnumbers recurrence as the modern complication: the nerves are the operation's real stakes, and a numb patch is a better outcome than a neuroma in polypropylene.

Leaving the OR

The handoff

Procedure
Lichtenstein mesh repair, right indirect inguinal hernia
Anaesthetic
Local with sedation; repair cough-tested intact
Nerves
Ilioinguinal and iliohypogastric identified and preserved
Watch for
Urinary retention before discharge; scrotal haematoma; disproportionate pain

A fictional educational patient, handed over the way real ones are.

The postoperative course

  1. Day of surgeryHome the same day, walking; the first void confirmed before leaving, since retention is the classic same-day complication.
  2. POD 1-3Bruising that may track to the scrotum and look worse than it is; pain controlled on simple analgesia.
  3. Week 1-2Return to desk work and walking; lifting guided by comfort rather than calendar dogma.
  4. MonthsThe honest follow-up questions: any recurrence bulge, and any groin pain that outlasts the healing, which deserves review rather than resignation.

Watch it done

Find Open inguinal hernia repair (Lichtenstein) videos on YouTube

What can go wrong

Postoperative bleedingSurgical-site infection
Live this operation as a case →OR Prep this operationReview the instruments