Skin incision
The skin incision for appendicectomy should be ideally over the point of maximal tenderness. Often, this is McBurney's point and it necessitates McBurney's incision. A Lanz incision is an alternative but there is greater risk of nerve transection with subsequently increased risk of inguinal herniation.
An incision 4-6cm is usually adequate for most appendicectomies - it may be extended according to need.
In adverse circumstances, there are alternatives:
- presence of peritonitis: right paramedian incision provides better access for peritoneal toilet
- obese patients: extension of incision with division of rectus medially to gain adequate access
- incorrect diagnosis:
- new incision e.g. paramedian
- extension of incision e.g. to Pfannenstiel
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