Prehab, ‘small-bite’ techniques and botox reshaping complex hernia outcomes: US expert

Pune: Modern surgical innovations such as ‘prehab,' ‘small-bite' closure techniques, and use of botox are improving outcomes for patients with complex hernias. These advancements were highlighted by renowned US surgeon Eric M. Pauli during his visit to Deenanath Mangeshkar Hospital (DMH) recently to conduct a specialised workshop on abdominal wall reconstruction.Incisional hernias remain the most common complication following abdominal surgery (laparotomy). "It is not necessarily about how one opens the abdomen, but how one closes it," said Pauli, who serves as the director of abdominal wall surgery and fellowship programme at Hershey Medical Centre, the US.
Approximately 25–30% of patients develop an incisional hernia after abdominal surgery. In India, where an estimated 1.5 million laparotomies are performed annually, these hernias often evolve into complex ventral hernias (CVHs) that can severely impact a patient's mobility and centre of gravity.Traditional closure techniques often involve taking large tissue bites at 1cm intervals. However, research from Sweden — a leader in preventative healthcare — has pioneered the "small-bite" technique. This involves a 4:1 suture length-to-wound length ratio, using smaller, more frequent stitches."This technique distributes tension more evenly across the fascia—the strong connective tissue layer—significantly reducing the risk of the closure failing," said Pauli.Recurrence is a major challenge, with one in three patients experiencing a return of their hernia after surgery. This risk increases with a higher body mass index (BMI), smoking, and uncontrolled diabetes. To combat this, surgeons are shifting focus toward "prehab" — optimizing a patient's health before they even reach the operating room.Key prehab requirements include cessation of smoking at least four weeks prior to surgery and glycemic control (fasting glucose below 110 mg/dl and HbA1C below 7%)."If you fix the patient before you fix the hernia, your results change," Pauli said. Studies show that prehab leads to 50% fewer surgical site infections, 75% fewer superficial infections, and faster recovery of bowel function.For large, long-standing hernias where muscles have retracted and stiffened, botox (botulinum toxin) is being used as a "chemical component separation" tool."When injected into the lateral abdominal wall weeks before surgery, botox temporarily relaxes and thins these muscle layers," said Utkrant Kurlekar, senior surgeon at DMH. "This effectively creates more space inside the abdomen, allowing us to close the defect without dangerous levels of tension."While hernia repair was once viewed as a routine general surgery task, it has now evolved into a distinct subspecialty."In the past, it was considered ‘just a hernia'. But for complex or recurrent cases, you cannot keep doing the same operation and expect a different result," said Pauli. He emphasised that in specialised, high-volume centres, the historical recurrence rate of 50% for multiple failed repairs can be significantly lowered through better preparation, technique, and experience.