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Updated: Jan 27, 2026

Robot-assisted Partial Splenectomy
Published on: January 2, 2026
Short- and intermediate-term clinical outcome comparison between laparoscopic and robotic-assisted median arcuate
Usah Khrucharoen1,2, Yen-Yi Juo1,2, Yijun Chen1
1UCLA Section of Minimally Invasive and Bariatric Surgery, Department of Surgery, David Geffen School of Medicine at University of California, BOX 956904, 72-239 CHS, Los Angeles, CA, 90095, USA.
Abstract:
While laparoscopic median arcuate ligament (MAL) release remains the most common approach, robotic-assisted MAL release has been increasingly performed by several institutions. This study aims to compare surgical outcomes between laparoscopic and robotic-assisted MAL release. This is a retrospective study of patients undergoing laparoscopic and robotic-assisted MAL release in a teaching hospital from January 1999 to December 2018. Intraoperative and postoperative outcomes as well as short- and intermediate-term clinical outcomes were compared between the two groups. A total of 16 laparoscopic and 18 robotic cases were included. Demographics and baseline characteristics were similar between the two comparison groups. Median operative time was shorter in the robotic group [179.5 (IQR 127.3-225) vs. 106 (IQR 80.8-122.8) minutes; p < 0.001]. The rates of conversion to open operation were similar in both groups (6.3% vs. 5.6%, p = 0.99). Conversions to laparotomy were performed due to bleeding and extensive adhesions in one laparoscopic case and due to technical difficulties in a patient with narrow body habitus in the robotic group. Postoperative complication rates were similar (12.5% vs. 16.7%, p = 0.99), all in grade I and II. Complete pain resolution rates (37.5% vs. 44.4%, p = 0.93), symptom recurrence rates (37.5% vs. 27.8%, p = 0.93), and overall clinical improvement at last follow-up (87.5% vs. 77.8%, p = 0.66) were not statistically different. Both laparoscopic and robotic-assisted MAL release offer similar short- and intermediate-term clinical outcomes. A shortened operative time may be achieved by incorporating the robot platform.
Insights
Robotic-assisted median arcuate ligament (MAL) release offers similar clinical outcomes to laparoscopic approaches. While operative time is reduced with robotic MAL release, patient recovery and symptom resolution remain comparable between methods.
Area of Science:
- Minimally Invasive Surgery
- Gastroenterology
- Surgical Technology
Background:
- Laparoscopic median arcuate ligament (MAL) release is a common surgical procedure.
- Robotic-assisted MAL release is an emerging alternative gaining traction in several institutions.
Purpose of the Study:
- To compare surgical outcomes between laparoscopic and robotic-assisted MAL release.
- To evaluate intraoperative, postoperative, and short- to intermediate-term clinical outcomes.
Main Methods:
- Retrospective study of patients undergoing MAL release (laparoscopic vs. robotic).
- Data collected from January 1999 to December 2018 in a teaching hospital.
- Comparison of operative time, conversion rates, complication rates, pain resolution, symptom recurrence, and overall clinical improvement.
Main Results:
- Median operative time was significantly shorter in the robotic group (106 min) compared to the laparoscopic group (179.5 min).
- Conversion to open surgery rates were similar (5.6% vs. 6.3%).
- Postoperative complication rates (16.7% vs. 12.5%), pain resolution (44.4% vs. 37.5%), symptom recurrence (27.8% vs. 37.5%), and clinical improvement (77.8% vs. 87.5%) were not statistically different.
Conclusions:
- Both laparoscopic and robotic-assisted MAL release provide similar short- and intermediate-term clinical outcomes.
- Robotic platform incorporation can lead to a shortened operative time for MAL release.
- The choice of approach may depend on institutional experience and patient factors, with comparable efficacy in symptom management.
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