Evidence map›Paper›PMID 21811855›Full record

Trial reportKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2012

The effect of knee position on blood loss and range of motion following total knee arthroplasty.

Bin Li, Yu Wen, Da Liu, Lijie Tian

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 8 pooled it
2.4field-weighted citation impact, top 12% of its field
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

23 citing papers in PubMed, 8 syntheses or guidelines pooled it, 45 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Guideline
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Post-operative limb position can influence blood loss and range of motion after total knee arthroplasty: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2015
    Pooled it
  8. Pooled it
  9. Trial
  10. Trial
  11. Trial
  12. Trial
  13. Trial
  14. Effect of different postoperative flexion regimes on the outcomes of total knee arthroplasty: randomized controlled trial.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017
    Trial
  15. The effects of tourniquet use in total knee arthroplasty: a randomized, controlled trial.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017
    Trial
  16. Trial
  17. Effect of surgical closing in total knee arthroplasty at flexion or extension: a prospective, randomized study.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014
    Trial
  18. Knee flexion after total knee arthroplasty reduces blood loss.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014
    Trial
  19. Article
  20. [The influence of knee flexion position on postoperative blood loss and knee range of motion after total knee arthroplasty].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2020
    Review
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 at 2 institutions in 1 country.

Bin LiDepartment of Orthopaedic Surgery, Shengjing Hospital, China Medical University, Shenyang, 110003, China. surgeon_li@126.com
Yu Wen
Da Liu
Lijie Tian
China Medical University · CNShenyang Medical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study prospectively assessed the effects of knee position on blood loss and range of motion after primary total knee arthroplasty (TKA).

methodsOne hundred and ten consecutive TKA patients were randomized into flexion group and extension group. Both groups had the leg elevated 30° at the hip over an inactive CPM for 72 h postoperatively. The flexion group had the knee flexed to 30° during this period. The extension group had the knee extended fully. Perioperative blood loss, hidden blood loss, knee swelling, ecchymosis, analgesia requirements, range of motion (ROM), fixed flexion deformity (FFD), straight-leg raising action, and postoperative complications within 6 weeks of surgery were measured for evaluation and comparison.

resultsThe postoperative hidden blood loss, knee swelling, and scope of ecchymosis were significantly lower in the flexion group than in the extension group, and ROM and straight-leg raising action were significantly higher during the early period after operation. No significant difference was observed in perioperative blood loss, the amount of morphine used, or FFD in the early postoperative period or in ROM and FFD at 6 weeks postoperatively.

conclusionsThe findings of this study indicate that flexion of the knee to 30° with the leg elevated 30° at the hip after total knee arthroplasty may mitigate knee swelling and provide other beneficial results during the early rehabilitation following TKA. LEVEL OF EVIDENCE: Prospective comparative study, Level I.

Indexed as

Arthroplasty, Replacement, KneeBlood Loss, SurgicalAgedFemaleHumansKnee JointMaleMiddle AgedPostoperative CarePostureProspective StudiesRange of Motion, Articular

Identifiers

PMID21811855
OpenAlexW1992881728

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.