Evidence map›Paper›PMID 37828552›Full record

ArticleBMC sports science, medicine & rehabilitation2023

Analyses of actions which cause anterior cruciate ligament injuries in the national basketball association players: YouTube-based video analyses.

Takanobu Saito, Natsuki Matsumura, Shinichi Kawamoto, Naoki Doi, Tomoki Aoyama, Momoko Nagai-Tanima

Abstract read
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In one paragraph

Article in BMC sports science, medicine & rehabilitation, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 2 pooled it
–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

5 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. 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

6 authors.

Takanobu SaitoHuman Health Sciences, Graduate School of Medicine, Kyoto University, 53 kawahara-cho, shogoin, Sakyo-ku, 606-8507, Kyoto, Japan.
Natsuki MatsumuraHuman Health Sciences, Graduate School of Medicine, Kyoto University, 53 kawahara-cho, shogoin, Sakyo-ku, 606-8507, Kyoto, Japan.
Shinichi KawamotoHuman Health Sciences, Graduate School of Medicine, Kyoto University, 53 kawahara-cho, shogoin, Sakyo-ku, 606-8507, Kyoto, Japan.
Naoki DoiHuman Health Sciences, Graduate School of Medicine, Kyoto University, 53 kawahara-cho, shogoin, Sakyo-ku, 606-8507, Kyoto, Japan.
Tomoki AoyamaHuman Health Sciences, Graduate School of Medicine, Kyoto University, 53 kawahara-cho, shogoin, Sakyo-ku, 606-8507, Kyoto, Japan.
Momoko Nagai-TanimaHuman Health Sciences, Graduate School of Medicine, Kyoto University, 53 kawahara-cho, shogoin, Sakyo-ku, 606-8507, Kyoto, Japan. tanima.momoko.8s@kyoto-u.ac.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnterior cruciate ligament (ACL) injuries are among the most common injuries in the National Basketball Association (NBA), and it is important to investigate the actual nature of the injury because it can impair a player's performance after returning to the game. Although the moment of injury has been investigated, the details of the movements and circumstances leading to injury in basketball games are unknown. This study aimed to clarify the actions leading to ACL injuries and to investigate their characteristics, based on YouTube video analyses of the NBA players.

methodsPlayers with ACL injuries in the NBA were identified through web-based research over 10 seasons (2011/2012-2021/2022, through October 2021), with 29 recorded videos of ACL injuries in the NBA. Actions were categorized based on basketball-specific gestures, and determined whether the player was in contact with an opponent or not and, if so, the location of the contact was analyzed focusing on two time points: at the injury frame (IF) and one step before the injury frame (IF-1). The "injury leg" timing was counted for each of the first and second steps after ball possession.

resultsThe majority (68.2%) of ACL injury occurred during the 2 steps phase (only two steps can proceed after ball retention in basketball, so we defined them as two steps) in the offense action, and most notably during the first step (80.0%). 73.3% of players who were injured during the 2 steps phase got contact to an area other than the knee (Indirect contact) at the IF-1, with 81.8% of contact being located in the upper body contralateral to the respective knee injury. The probability of players with ACL injuries during the 2 steps at the IF-1 who got Indirect contact was statistically significantly greater than those who got no contact with other players (p = 0.042).

conclusionsWe argue that including pre-injury play and contact falls into the novelty category. Through YouTube-based video analyses, this study revealed that ACL injuries tend to be characterized by specific types of actions, the timing of contact, and the location of contact in NBA players.

Indexed as

Anterior cruciate ligamentBasketballIndirect contactThe National Basketball AssociationVideo analysis

Identifiers

PMID37828552
PMCPMC10571282

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Registered trials

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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.