• Hernia recurrence rates at 2 years post surgery.
  

• Complication rates.
  
• Duration of procedure.
  
• Cost of equipment use.
  
• Rate of conversion to open procedure
  
• Length of hospital stay.
  
• Time to return to work and usual activities.
  
• Pain scores and analgesic use.
  

Study population is Waitemata Health (Auckland New Zealand) patients presenting to clinic with unilateral primary inguinal hernia aged less than 60 years, fit for surgery and able to consent for the study. Randomized to open mesh repair or laparoscopic preperitoneal mesh repair. Two surgeons (Dr Rodgers and Dr Hammodat) using a standardized technique. Conversion rates from lap to open will be recorded.

Phone assessment postop day 1, 1 week and at 6 months. Clinic assessment at 4 weeks, 1 year and 2 years.

Primary outcome is hernia recurrence which will be assessed by a research nurse independent of surgeon at each clinic appointment. Assessment to also include assessment of ongoing symptoms such as pain/discomfort, sensory disturbance, and sexual dysfunction.

Quality of life assessment (SF 36 questionnaire) preoperatively and at each assessment.

Pain assessment 4hrs postop and at all other assessments by score 0-10 and measurement of pain relief.

Cost analysis to include the following parameters: theatre equipment costs, theatre time, drug use, hospital stay, time to return to work, time to return to normal activities.

Interim analysis at 2 years of followup by independent Health and Safety committee. Final analysis at 4 years of followup.