This multicenter, randomized, controlled trial aims to evaluate the efficacy and safety of thread embedding acupuncture (TEA) in promoting gastrointestinal recovery after laparoscopic colorectal cancer surgery. The primary outcome is the time to first flatus. Secondary outcomes include time to first defecation, tolerance to oral intake, length of hospital stay, and patient-reported quality of life.

Inclusion Criteria:

Age 18-80 years Diagnosed with stage I-III colorectal cancer Scheduled for elective laparoscopic colorectal resection ASA Physical Status I-III Ability to provide informed consent

Exclusion Criteria:

History of prior major abdominal surgery Emergency or palliative surgery Combined organ resection or open conversion Severe postoperative complications (e.g., anastomotic leak, GI bleeding) Severe cardiac, hepatic, renal, or psychiatric comorbidities Refusal to undergo acupuncture

Participants were blinded to their group assignment. In the sham group, blunt needles were placed at the same acupoints using adhesive pads without skin penetration or electrical stimulation, simulating the appearance of real thread embedding. Outcome assessors and investigators responsible for data collection and analysis were also blinded to the group allocation. Care providers performing the procedure were not blinded due to the nature of the intervention.