Evidence map›Paper›PMID 34283648›Full record

ArticleThe American journal of sports medicine2021

Change of Direction Biomechanics in a 180-Degree Pivot Turn and the Risk for Noncontact Knee Injuries in Youth Basketball and Floorball Players.

Mari Leppänen, Jari Parkkari, Tommi Vasankari, Sami Äyrämö, Juha-Pekka Kulmala, Tron Krosshaug, Pekka Kannus, Kati Pasanen

Open access · hybridAbstract read
In one paragraph

Article in The American journal of sports medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

7 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
  2. Article
  3. Competitive floorball over the last decade: a scoping review.Frontiers in sports and active living · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. 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

8 authors at 7 institutions in 3 countries.

Mari LeppänenTampere Research Center of Sports Medicine, UKK Institute, Tampere, Finland.
Jari ParkkariTampere Research Center of Sports Medicine, UKK Institute, Tampere, Finland.
Tommi VasankariTampere Research Center of Sports Medicine, UKK Institute, Tampere, Finland.
Sami ÄyrämöFaculty of Information Technology, University of Jyväskylä, Jyväskylä, Finland.
Juha-Pekka KulmalaMotion Analysis Laboratory, Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
Tron KrosshaugOslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Science, Oslo, Norway.
Pekka KannusTampere Research Center of Sports Medicine, UKK Institute, Tampere, Finland.
Kati PasanenTampere Research Center of Sports Medicine, UKK Institute, Tampere, Finland.
Tampere University Hospital · FIOslo Sports Trauma Research Center · NOTampere University · FIUniversity of Calgary · CAUniversity of Helsinki · FIUniversity of Jyväskylä · FIUrho Kaleva Kekkonen Institute · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies investigating biomechanical risk factors for knee injuries in sport-specific tasks are needed. PURPOSE: To investigate the association between change of direction (COD) biomechanics in a 180-degree pivot turn and knee injury risk among youth team sport players. STUDY

designCohort study; Level of evidence, 2.

methodsA total of 258 female and male basketball and floorball players (age range, 12-21 years) participated in the baseline COD test and follow-up. Complete data were obtained from 489 player-legs. Injuries, practice, and game exposure were registered for 12 months. The COD test consisted of a quick ball pass before and after a high-speed 180-degree pivot turn on the force plates. The following variables were analyzed: peak vertical ground-reaction force (N/kg); peak trunk lateral flexion angle (degree); peak knee flexion angle (degree); peak knee valgus angle (degree); peak knee flexion moment (N·m/kg); peak knee abduction moment (N·m/kg); and peak knee internal and external rotation moments (N·m/kg). Legs were analyzed separately and the mean of 3 trials was used in the analysis. Main outcome measure was a new acute noncontact knee injury.

resultsA total of 18 new noncontact knee injuries were registered (0.3 injuries/1000 hours of exposure). Female players sustained 14 knee injuries and male players 4. A higher rate of knee injuries was observed in female players compared with male players (incidence rate ratio, 6.2; 95% CI, 2.1-21.7). Of all knee injuries, 8 were anterior cruciate ligament (ACL) injuries, all in female players. Female players displayed significantly larger peak knee valgus angles compared with male players (mean for female and male players, respectively: 13.9°± 9.4° and 2.0°± 8.5°). No significant associations between biomechanical variables and knee injury risk were found.

conclusionFemale players were at increased risk of knee and ACL injury compared with male players. Female players performed the 180-degree pivot turn with significantly larger knee valgus compared with male players. However, none of the investigated variables was associated with knee injury risk in youth basketball and floorball players.

Indexed as

Anterior Cruciate Ligament InjuriesBasketballKnee InjuriesAdolescentAdultBiomechanical PhenomenaChildCohort StudiesFemaleHumansKnee JointMaleYoung AdultACL injuriesbiomechanicsknee injuriesrisk factorsscreeningteam sports

Identifiers

PMID34283648
PMCPMC8355634
OpenAlexW3186328017

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.