Why hernias recur — and why the redo must be planned differently
A hernia that returns is rarely bad luck alone. The usual culprits are a first repair closed under tension, a mesh that was too small or sat in a weak plane, a wound infection that quietly undermined the repair, or ongoing strain from obesity, chronic cough, constipation, or smoking. Whatever the cause, one thing is consistent: repeating the same operation in the same plane has a high failure rate.
A properly planned redo starts with information — your previous operation notes, the type and position of the old mesh, and a CT scan mapping the defect. International hernia society guidance favours placing the new mesh in a previously unused tissue plane rather than repeating the failed approach. The new mesh therefore goes into a fresh, untouched plane (usually retro-muscular), with wide overlap beyond the defect edges. Scar tissue and old mesh are worked around or removed only where needed.
Recurrent hernias sit within the broader group of complex abdominal wall problems — the techniques, planning, and recovery are covered in depth in our
complex ventral hernia repair guide. If your recurrence is at an old surgical scar, the incisional hernia surgery page explains that specific situation.