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Research Article: Minimally invasive percutaneous cannulated screw fixation for pelvic fractures: a retrospective case cohort study of clinical and radiological outcomes

Date Published: 2026-06-19

Abstract:
To describe the clinical and radiological outcomes of minimally invasive percutaneous cannulated screw fixation (MIPCSF) in a consecutive series of patients with unstable Tile B/C pelvic fractures, and to explore associations between Tile classification, surgical timing, and outcomes. A single-center retrospective cohort study was conducted on 248 consecutive patients with unstable Tile B/C pelvic fractures who underwent MIPCSF. Fracture reduction and screw placement accuracy were assessed via Matta scoring and Gertzbein-Robbins classification. Functional outcomes were evaluated using Majeed score, SF-36 and VAS. Subgroup analyses were performed by Tile classification (B vs. C) and surgical timing (?72?h vs. >72?h). Of 248 patients, 63.0% were male (mean age 42.8?±?10.5?years) and 75.0% underwent early surgery. Mean intraoperative blood loss and operative time were 52.8?±?18.6?mL and 68.5?±?12.3?min. The excellent/good rate of Matta scoring was 92.3%, and clinically acceptable screw placement was 96.8%. Mean fracture healing time was 12.8?±?3.2?weeks (healing rate 98.4%), with 18.5% developing degenerative changes. At final follow-up, mean Majeed score was 86.4?±?10.2 (excellent/good rate 86.7%) and mean VAS was 1.8?±?0.9. Tile C patients had longer operative time, more screws per patient, longer healing time, higher SI joint degeneration rate, and inferior functional scores than Tile B (all P-sub?<?0.05 after Bonferroni correction). Early surgery was associated with shorter healing time (P-sub?<?0.001) and lower SI joint degeneration (P-sub?=?0.018) than delayed surgery. Matta excellent/good rate did not differ significantly between groups after correction for multiple comparisons. In this retrospective cohort, MIPCSF was associated with favorable clinical and radiological outcomes. Earlier surgical timing (?72?h) was associated with shorter healing time and lower rates of SI joint degeneration. Tile C fractures were associated with longer operative times, more screws per patient, longer healing time, higher SI joint degeneration rates, and lower functional scores compared with Tile B fractures.

Introduction:
Pelvic fractures account for 3–8% of all fractures, with an annual incidence of 20–37 per 100,000 population ( 1 ). High-energy mechanisms (traffic accidents, falls from height) predominate in younger adults, whereas fragility fractures now comprise up to 20% of cases in aging populations ( 2 , 3 ). The complex pelvic anatomy—adjacent to visceral organs, iliac vessels, and the lumbosacral plexus—predisposes to severe hemorrhage and neurological injury ( 4 ). Hemodynamically unstable pelvic fractures are associated…

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