Appendectomy — How It Works, Benefits & Recovery — Procedure Guide, Recovery & Risks | MyMedicPlus

An appendectomy is the surgical removal of the vermiform appendix — a small, finger-shaped pouch attached to the caecum in the right lower quadrant of the abdomen — performed to treat acute appendicitis. It is one of the most common emergency abdominal surgeries performed worldwide, with approximately 300,000 procedures annually in the USA alone. The appendix is a vestigial structure with no essential digestive function in adults. When it becomes obstructed by a faecolith, lymphoid hyperplasia, or foreign body, bacterial overgrowth leads to inflammation, swelling, and — if untreated — perforation and peritonitis. Appendectomy can be performed laparoscopically (three small incisions using a camera and instruments) or via open surgery (a single incision in the right lower quadrant). General surgeons perform the procedure. Laparoscopic appendectomy is now the gold standard at most centres due to superior recovery profile and lower wound complication rates. An appendectomy is the surgical removal of the vermiform appendix — a small, finger-shaped pouch attached to the caecum in the right lower quadrant of the abdomen — performed to treat acute appendicitis and prevent fatal rupture with generalised peritonitis. Appendicitis is the most common abdominal surgical emergency worldwide, with a lifetime risk of approximately 7% in Western populations. Approximately 300,000 appendectomies are performed in the United States annually and over 50,000 in the United Kingdom. The operation is performed by general surgeons, most commonly using laparoscopic technique. Open appendectomy via McBurney's point incision remains standard in resource-limited settings and where laparoscopic access is unavailable. Modern enhanced recovery protocols target same-day or next-day discharge for uncomplicated cases.

Appendectomy is indicated for patients diagnosed with acute appendicitis — confirmed by clinical examination, blood tests (elevated white cell count and CRP), and imaging. Computed tomography (CT scan) of the abdomen and pelvis is the most accurate imaging investigation, with sensitivity and specificity exceeding 95%. Ultrasound is preferred in children and pregnant women to avoid radiation. The Alvarado score (incorporating clinical and laboratory features) aids surgical decision-making. Emergency appendectomy is performed for uncomplicated and complicated (perforated or gangrenous) appendicitis. Interval appendectomy — scheduled 6–10 weeks after successful antibiotic management — is indicated following resolution of a periappendiceal abscess (appendix mass). Laparoscopic appendectomy has a diagnostic advantage: the entire abdominal cavity can be examined, which is especially valuable in women of reproductive age where gynaecological pathology may mimic appendicitis. Selected patients with uncomplicated appendicitis may initially be managed with IV antibiotics alone, though 30–40% require appendectomy within 5 years.

Under general anaesthesia, laparoscopic appendectomy begins with CO2 insufflation of the abdomen to create a working space. Three trocars (5–12 mm ports) are placed — typically one at the umbilicus and two in the lower abdomen. A 30-degree laparoscope provides magnified visualisation. The appendix mesentery (mesoappendix) is divided using an energy device (LigaSure or ultrasonic shears). The appendix base is ligated with two endoscopic loops or a linear stapler and divided. The appendix is retrieved in a specimen bag to prevent contamination. The abdomen is irrigated if contamination is present. Port sites are closed with absorbable sutures. In open surgery, a Lanz or gridiron incision in the right iliac fossa allows direct appendix access; the base is ligated and divided. Operative duration is typically 30–60 minutes for uncomplicated cases and up to 90 minutes for perforated appendicitis requiring washout. Under general anaesthesia, laparoscopic appendectomy begins with CO2 insufflation of the abdomen to create a working space (pneumoperitoneum). Three trocars are placed — typically one at the umbilicus and two in the lower abdomen. The appendix is identified, the mesoappendix divided with a harmonic scalpel or LigaSure, and the appendix base secured with two or three endoloop ligatures or a stapler before division and extraction in a retrieval bag to prevent wound contamination. The abdomen is irrigated if there is perforation or local contamination. Trocars are removed under vision to exclude port-site bleeding, the CO2 released, and wounds closed with absorbable sutures and skin glue. In open appendectomy, a 3–5 cm incision at McBurney's point provides direct access to the appendix. Total operative time is 30–60 minutes for uncomplicated cases.

Appendectomy is curative in over 95% of cases of acute appendicitis, eliminating the risk of appendix perforation, peritonitis, and life-threatening sepsis. Laparoscopic appendectomy offers significantly better outcomes than open surgery: wound infection rates are 3–4% versus 7–11% for open surgery; hospital stay is reduced by 1–2 days; return to normal activities and work is 2–5 days faster; and post-operative pain is significantly lower. Laparoscopic surgery also provides diagnostic certainty — if the appendix appears normal, gynaecological or other pathology can be identified and treated simultaneously. For medical tourists, appendectomy in India costs approximately INR 30,000–70,000 (USD 400–900), compared to USD 15,000–35,000 in the USA or GBP 8,000–15,000 in the UK, at equivalent quality hospitals. Long-term outcomes after appendectomy are excellent; there are no dietary restrictions and no long-term functional consequences of appendix removal.

Appendectomy is a safe procedure, but recognised complications include wound infection (3–7%), which is reduced by prophylactic pre-operative antibiotics (metronidazole and a cephalosporin or co-amoxiclav). Intra-abdominal abscess formation occurs in 2–5% following perforated appendicitis and may require CT-guided drainage. Paralytic ileus (temporary bowel sluggishness) causes bloating and delayed return of bowel function in 5–10% and usually resolves with conservative management. Deep vein thrombosis prophylaxis (low-molecular-weight heparin and compression stockings) is essential, particularly in delayed presentations. Conversion from laparoscopic to open surgery occurs in approximately 5–10% due to dense adhesions, poor visualisation, or unexpected findings. Stump appendicitis — recurrent appendicitis from a residual appendix stump — is an extremely rare late complication. Anastomotic complications arise only if bowel resection is required for gangrenous bowel. Mortality is under 0.1% for uncomplicated appendicitis but rises to 0.5–5% in elderly patients with perforated appendicitis and faecal peritonitis.

Following laparoscopic appendectomy for uncomplicated appendicitis, hospital stay is typically 1–2 days. Oral intake (fluids initially, then light diet) resumes within 24 hours of surgery. Pain is managed with regular paracetamol, ibuprofen, and short-course opioids if needed. Light activity — walking and daily tasks — resumes within 1 week. Return to desk work is possible at 7–10 days; manual labour and strenuous exercise are restricted for 4 weeks. Port-site sutures are absorbable; wound review at 10–14 days checks healing. Shower bathing from 48 hours post-surgery is permitted; baths and swimming are delayed until wounds are fully healed (10–14 days). For perforated appendicitis, hospital stay is 3–5 days with IV antibiotics (metronidazole and co-amoxiclav) continued until fever and inflammatory markers settle. Full recovery after complicated appendicitis takes 4–6 weeks. Most patients lead completely normal lives with no long-term restrictions following recovery.