Hafiz Ahsan Shehryar, Moiz Ahmad Shahka, Muhammad Umar Javed.
Comparison of Sublay versus Onlay Mesh Technique of Ventral Hernia Repair.
Pak J Med Health Sci Jan ;12(1):57-9.

Aim: To compare the outcomes of onlay mesh technique with ventral mesh repair for treatment of ventral hernia. Methods: This study (randomized controlled in nature) was conducted from 1-April-2016 to 31-March- 2017. The study setting was department of surgery Holy Family Hospital Islamabad. 200 patients of ventral hernia with hernia size 2-5 cm and age 20-65 years were selected in this trial. Patients were randomly (using draw randomization) distributed in two equal groups. Group O; in these patients onlay mesh repair was performed. Group S; in these patients sublay mesh repair was performed. Post- operative pain, seroma formation and wound infections (superficial and deep) were main study outcome measures. We used computer software SPSS v19 for analyzing data. Seroma formation and wound infections in sublay and onlay groups were compared using Chi-square test. Students t-test was used to compare post-op pain score between groups. Results: Mean age, gender and type of ventral hernia were similar between group S and group O. Mean pain score after 6 hours of surgery in group S was 2.91+0.71 versus 4.43+/-0.86 in group O (p- value <0.0001). Wound infections occurred in 8% patients in group S and in 17% patients in group O(p-value 0.05). Seroma formation rate was also high in group O, 6% versus 2% in group S (p-value 0.31). Conclusion: Sublay mesh repair as better as compared to the onlay mesh repair for the treatment of ventral hernia repair.

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