L Panait1, R L Bell, K E Roberts, A J Duffy. 1. Department of Surgery, Yale School of Medicine, 40 Temple St., Suite 7B, New Haven, CT, 06510, USA, lucian.panait@drexelmed.edu.
Abstract
PURPOSE: Laparoscopic incisional hernioplasty (LIH) bridges the fascial gap between the rectus muscles with a posteriorly placed mesh, and is a low recurrence alternative to other reconstructions. It is unclear if this repair optimizes the function of the abdominal wall. We hypothesize that significant medialization of the fascial edges occurs in patients who undergo LIH. METHODS: Two hundred fifty-eight patients underwent LIH by a single surgeon between 2004 and 2012. 44 of these had pre- and postoperative CT scans that illustrated the gap between the rectus muscles. All 44 patients underwent LIH with polyester composite mesh, with suture and tack fixation. The distance between the fascial edges on the pre- and postoperative CT scans was compared. Percent medialization was calculated for each defect. RESULTS: Average fascial separation reduction was 0.8 cm (6.56-5.76 cm, 12.2 % medialization, p < 0.0001). 36 of 44 patients demonstrated a reduction in hernia defect width (81.8 %): these defects reduced 1.09 cm (6.47-5.38 cm, 16.9 % medialization, p < 0.0001). In defects wider than 5 cm, the width reduced by 0.94 cm (8.48-7.54 cm, n = 26, 10.6 % medialization, p = 0.004). The use of meshes ≥500 cm(2) reduced the defect by 0.95 cm (8.42-7.47 cm, 11.23 % medialization, n = 22, p = 0.005). CONCLUSIONS: Significant medialization of the rectus muscles is evident in most patients undergoing LIH. Although the rectus muscles are not ideally approximated, this may help improve the function of the anterior abdominal wall. Further technical refinements and material improvements may improve the reconstructive results of the LIH.
PURPOSE: Laparoscopic incisional hernioplasty (LIH) bridges the fascial gap between the rectus muscles with a posteriorly placed mesh, and is a low recurrence alternative to other reconstructions. It is unclear if this repair optimizes the function of the abdominal wall. We hypothesize that significant medialization of the fascial edges occurs in patients who undergo LIH. METHODS: Two hundred fifty-eight patients underwent LIH by a single surgeon between 2004 and 2012. 44 of these had pre- and postoperative CT scans that illustrated the gap between the rectus muscles. All 44 patients underwent LIH with polyester composite mesh, with suture and tack fixation. The distance between the fascial edges on the pre- and postoperative CT scans was compared. Percent medialization was calculated for each defect. RESULTS: Average fascial separation reduction was 0.8 cm (6.56-5.76 cm, 12.2 % medialization, p < 0.0001). 36 of 44 patients demonstrated a reduction in hernia defect width (81.8 %): these defects reduced 1.09 cm (6.47-5.38 cm, 16.9 % medialization, p < 0.0001). In defects wider than 5 cm, the width reduced by 0.94 cm (8.48-7.54 cm, n = 26, 10.6 % medialization, p = 0.004). The use of meshes ≥500 cm(2) reduced the defect by 0.95 cm (8.42-7.47 cm, 11.23 % medialization, n = 22, p = 0.005). CONCLUSIONS: Significant medialization of the rectus muscles is evident in most patients undergoing LIH. Although the rectus muscles are not ideally approximated, this may help improve the function of the anterior abdominal wall. Further technical refinements and material improvements may improve the reconstructive results of the LIH.
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