Design: retrospective single-centre cohort with 1:1 propensity score matching
Population: 282 matched patients (141 per group) undergoing single-port totally extraperitoneal inguinal hernia repair
Primary outcome: operative time and perioperative complications
Effect: median operative time 35 min (IQR 25-50) vs 40 min (IQR 30-55), P = 0.034; no difference in complications

A single tertiary centre performed 584 consecutive single-port totally extraperitoneal inguinal hernia repairs between March 2023 and September 2024, using conventional straight laparoscopic instruments in 443 and articulated instruments in 141. Propensity score matching produced 141 well-balanced pairs. A standardised 10 x 15 cm mesh was used in every case.

Median operative time was 35 minutes with articulated instruments against 40 with straight ones (interquartile ranges 25-50 and 30-55). Nothing else moved: length of stay, overall complications, urinary retention, seroma, skin bleeding, fever, chronic pain and early recurrence were comparable. There were no conversions to open or transabdominal preperitoneal repair, no Clavien-Dindo grade III or IV complications, no readmissions, no reoperations and no recurrences in either group over the study period.

A five-minute median difference on a 40-minute operation is real but modest, and this is a single high-volume centre where single-port totally extraperitoneal repair is already routine — the least likely setting to show a learning-curve benefit and the most likely to show a small efficiency gain. Cost was not assessed, and articulated instruments are substantially more expensive than straight ones.

So the finding to take is narrow and honest: the instruments did not make the operation less safe, and they made it slightly quicker in expert hands. Whether that justifies the consumable cost is a unit-level calculation this study does not attempt, and in a cost-constrained Indian setting the answer will usually be no outside complex cases.

Do not expect a safety difference from articulated instruments in single-port hernia repair; none appeared across 282 matched cases
Weigh a roughly five-minute median time saving against the consumable cost before adopting them routinely
Consider them for the technically awkward single-port case rather than the whole list
Zero recurrences in either arm reflects short follow-up, not durability — do not quote it to patients
Keep the mesh and technique standardised if you audit instrument change, as this centre did

Why it matters

New instrument platforms are usually adopted on the promise of safety; here the only measurable gain was five minutes.

The statistics, in plain English

Propensity score matching balances the characteristics the investigators recorded, but it cannot balance what they did not — including which cases a surgeon chose the newer instrument for, or where in a learning curve each case sat. The overlapping interquartile ranges, 25-50 against 30-55 minutes, show the two distributions largely coincide despite the significant difference in medians. The complete absence of recurrences in both groups means follow-up was too short to measure recurrence at all, so that comparison carries no information.