To measure the effectiveness and feasible of laparoscopic neurolysis for the treatment of pelvic fracture combined lumbosacral trunk injury.

From December 2019 to December 2020, 6 patients with pelvic fracture combined lumbosacral trunk injury were received laparoscopic neurolysis (Male 5, female 1, mean age: 36±15). Tile classification of pelvic fracture: C1.3 of 5 cases, C3 of 1 cases, one patient was presented nerve injury post sacral-illiac screw fixation. The time before operation were: 2 cases less than 3 weeks, between 3 weeks and 2 month was 1 case, over 2 months were 3 case. The muscle strength of patients before operation were recorded according to the level of Nerve Injuries Committee of the British Medical Research Council (BMRC). M0 of 4 cases, M1 of 2 cases. All cases were diagnosed with soft tissue entrapment of lumbosacral trunk by physical examination and enhanced CT and magnetic resonance neurography (MRN) fusion technique.

Four patients were underwent laparoscopic neurolysis successfully and 2 patients were underwent opening operation due to bony entrapment was observed intra-operatively. The mean operative time of laparoscopic neurolysis was (173±8) min and mean blood loss was (112±56) ml. The muscle strength at the endpoint of follow-up were M4 of 3 cases, M3 of 1 cases, no recover in 2 cases.

The laparoscopic neurolysisis a precise, minimally invasive method for the pelvic fracture combined soft tissue entrapment of lumbosacral trunk and the primary effectiveness is safe and sufficient.