Evidence map›Paper›PMID 41089162›Full record

ArticleCureus2025

Benefits of Image-Free Robotic-Assisted Total Knee Arthroplasty in Early Postoperative Recovery and Tibial Alignment Accuracy.

Kazu Matsumoto, Daichi Ishimaru, Kazuki Sohmiya, Nobuo Terabayashi

Abstract read
In one paragraph

Article in Cureus, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Review
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Kazu MatsumotoDepartment of Orthopedics, Gifu Seiryu Hospital, Gifu, JPN.
Daichi IshimaruDepartment of Orthopedics, Gifu Seiryu Hospital, Gifu, JPN.
Kazuki SohmiyaDepartment of Orthopedics, Gifu Seiryu Hospital, Gifu, JPN.
Nobuo TerabayashiDepartment of Orthopedics, Gifu Seiryu Hospital, Gifu, JPN.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background Robotic-assisted total knee arthroplasty (RA-TKA) has been introduced to improve implant alignment and soft tissue balance, potentially enhancing early functional recovery and patient satisfaction. The Navio system (Smith & Nephew, Inc., Memphis, TN, USA) is an imageless, handheld, semi-active robotic platform, but evidence regarding its short-term outcomes remains limited. This study aimed to compare early postoperative recovery, pain, rescue analgesic use, and implant alignment between Navio RA-TKA and conventional TKA. Methods We retrospectively reviewed 113 knees in 100 patients undergoing primary bi-cruciate stabilized TKA for varus osteoarthritis between April 2019 and July 2022. Conventional TKA (55 knees) was performed using extramedullary guides, and Navio RA-TKA (58 knees) utilized haptic-guided burr resection. Postoperative quadriceps muscle strength (MS), knee range of motion (ROM), visual analogue scale (VAS) pain scores, femoral circumference, rescue analgesic doses, and coronal component alignment were assessed up to postoperative day (POD) 14. Results Quadriceps MS recovery was significantly faster in the RA-TKA group at POD three, seven, 10, and 14 (all p<0.05). ROM recovery was greater on POD 10 (p=0.0231). Rescue analgesic use was lower with RA-TKA (4.12±7.26 vs. 7.98±12.1 doses, p=0.0399). No significant differences were found in VAS scores or the femoral circumference. Tibial component alignment within 2° of the mechanical axis was achieved more frequently in the RA-TKA group (96.4% vs. 72.2%, p=0.0004). Conclusion Navio RA-TKA resulted in faster early functional recovery, reduced analgesic requirements, and improved tibial alignment accuracy compared with conventional TKA. These benefits may enhance early patient satisfaction and support the broader adoption of imageless, handheld robotic systems. Prospective randomized studies with long-term follow-up are warranted.

Indexed as

conventionalmuscle strengthpatient recoveryrange of motionrobotrobotic-assisted total knee arthroplastytotal knee arthroplasty

Identifiers

PMID41089162
PMCPMC12515557

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.