Evidence map›Paper›PMID 28324151›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2018

Higher hamstring-to-quadriceps isokinetic strength ratio during the first post-operative months in patients with quadriceps tendon compared to hamstring tendon graft following ACL reconstruction.

Felix Fischer, Christian Fink, Elmar Herbst, Christian Hoser, Caroline Hepperger, Cornelia Blank, Peter Gföller

2 registry-linked trialsAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 62 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 7 pooled it
7.2field-weighted citation impact, top 2% 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.

NCT04956393 nacompletednot on this mapstarted 2021, after this paper: background citation

Proof-of-Concept of the SOAR (Stop OsteoARthritis) Program: A Randomized Delayed-Control Trial

TypeinterventionalSponsorUniversity of British ColumbiaRan2021 to 2023Enrolled58ConditionsArthritis, Osteoarthritis, Arthritis Knee, Osteo Arthritis KneeArmsImmediate 8-Week SOAR Program, Delayed 8-Week SOAR Program
NCT06196281 naunknown statusnot on this mapstarted 2023, after this paper: background citation

Effects of Multi Station Proprioceptive Training in Soccer Players With Hamstrings Strain

TypeinterventionalSponsorRiphah International UniversityRan2023 to 2024Enrolled24ConditionsSports Physical TherapyArmswooble board proprioceptive training, multi-station proprioceptive training
3 · Its place in the literature

Who cites it

62 citing papers in PubMed, 7 syntheses or guidelines pooled it, 105 citations in OpenAlex.

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  15. Comparison of double bundle semitendinosus technique and pedicled quadriceps technique in patellar instability.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
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2 more citing papers are in PubMed but not listed here.

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

7 authors at 4 institutions in 2 countries.

Felix FischerResearch Unit for Orthopedic Sports Medicine and Injury Prevention, ISAG/UMIT, Eduard-Wallnöfer-Zentrum 1, 6060, Hall in Tirol, Austria.
Christian FinkResearch Unit for Orthopedic Sports Medicine and Injury Prevention, ISAG/UMIT, Eduard-Wallnöfer-Zentrum 1, 6060, Hall in Tirol, Austria. c.fink@gelenkpunkt.com.
Elmar HerbstDepartment of Orthopaedic Sports Medicine, Klinikum rechts der Isar, TU Munich, Ismaninger Str. 22, 81675, Munich, Germany.
Christian HoserGelenkpunkt - Sports and Joint Surgery, Olympiastraße 39, 6020, Innsbruck, Austria.
Caroline HeppergerResearch Unit for Orthopedic Sports Medicine and Injury Prevention, ISAG/UMIT, Eduard-Wallnöfer-Zentrum 1, 6060, Hall in Tirol, Austria.
Cornelia BlankInstitute of Sports Medicine, Alpine Medicine and Health Tourism (ISAG), UMIT, Eduard-Wallnöfer-Zentrum 1, 6060, Hall in Tirol, Austria.
Peter GföllerGelenkpunkt - Sports and Joint Surgery, Olympiastraße 39, 6020, Innsbruck, Austria.
Gelenkpunkt · ATKlinikum rechts der Isar · DETirol Kliniken · ATUMIT - Private Universität für Gesundheitswissenschaften, Medizinische Informatik und Technik · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study was to compare isokinetic quadriceps and hamstring muscle strength in patients following anterior cruciate ligament (ACL) reconstruction who received either hamstring (HT) or quadriceps (QT) tendon autografts at two time intervals within the first year after surgery.

methodsOne hundred twenty-four patients, 81 males (age 22.0 ± 6.2 years) and 43 females (age 20.9 ± 8.7 years), participated in this study. ACL reconstruction was performed with either quadriceps tendon autografts (QT; n = 61) or hamstring tendon autografts (HT; n = 63). Two isokinetic muscle strength tests (t1: 5.5 ± 1.2 months; t2: 7.6 ± 1.6 months) were performed at an angular velocity of 60°/s in both the injured and contralateral knees. An independent t test as well as a two-factor analysis of variance with repeated measurements was used. The significance level was set at p < 0.05.

resultsA statistically significant lower knee extensor strength was observed in the QT group within one year after surgery (p < 0.001). Additionally, data showed a significant higher H/Q ratio in QT patients compared to the HT group at t1 (p < 0.001) and t2 (p = 0.001) as well as a significant effect over time (p < 0.001) and interaction effect of time and graft (p = 0.007). Side-to-side values for extensor muscle strength were significantly (p < 0.001) greater in HT graft patients, while QT patients showed significantly (p < 0.001) greater values for flexor muscle strength at both time points of isokinetic testing, respectively.

conclusionThe results of this study indicate that graft choice has an impact on extensor strength in the first months after ACL reconstruction; however, there is no impact on flexor strength. The finding of a higher H/Q ratio in patients with QT grafts within the first months following surgery is possibly of clinical relevance. This may potentially be associated with lower stress on the maturing ACL graft. Furthermore, normal thigh strength can be restored over time. LEVEL OF EVIDENCE: III.

Indexed as

AdolescentAdultAnterior Cruciate Ligament InjuriesAnterior Cruciate Ligament ReconstructionChildFemaleHamstring MusclesHamstring TendonsHumansMaleMiddle AgedMuscle StrengthQuadriceps MuscleRetrospective StudiesTendonsTransplantation, AutologousACLAutograftHamstringHamstring-to-quadriceps ratioIsokinetic testingKneeMuscle strengthQuadriceps

Identifiers

PMID28324151
OpenAlexW2599469534

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.