SynthesisSports medicine (Auckland, N.Z.)2025
Hop to It! A Systematic Review and Longitudinal Meta-analysis of Hop Performance After ACL Reconstruction.
Synthesis in Sports medicine (Auckland, N.Z.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 3 of them syntheses that pooled 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.
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.
Who cites it
13 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Return to sport after ACL reconstruction in female athletes: a meta-analysis of return rates and time to return.Journal of orthopaedic surgery and research · 2026Pooled it
- Effectiveness of strength-oriented rehabilitation interventions as a non-pharmacologic rehabilitation strategy for knee function after anterior cruciate ligament reconstruction: a three-level meta-analysis.Frontiers in medicine · 2026Pooled it
- Gait differences after ACL reconstruction versus healthy controls: a three-level meta-analysis of kinematics, kinetics, and spatiotemporal parameters.Annals of medicine · 2025Pooled it
- Augmenting rehabilitation of male volleyball players after anterior cruciate ligament reconstruction with Thera-band based neuromuscular training to improve balance and functional performance: a pilot randomized clinical trial.Frontiers in public health · 2026Trial
- Establishing the Reliability of a Functional Performance Test Battery That Incorporates the QASLS Tool in Pre-Elite Female Field Hockey Players.Sports (Basel, Switzerland) · 2026Article
- Current concepts and future perspective of muscle function tests to inform return to sport decision-making after ACLR: A narrative review.Journal of experimental orthopaedics · 2026Review
- Inter-limb sensorimotor and functional performance asymmetries in elite wrestlers with unilateral knee injury.Frontiers in sports and active living · 2026Article
- Effects of Visual Perturbation on Single-Leg Drop Jump Biomechanics in Patients Post-Anterior Cruciate Ligament Reconstruction.Journal of clinical medicine · 2025Article
- Interpretable Machine Learning on Simulation-Derived Biomechanical Features for Hamstrings-Quadriceps Imbalance Detection in Running.Sports (Basel, Switzerland) · 2025Article
- Optimizing return to sports after anterior cruciate ligament reconstruction: A multi-factorial umbrella review on rehabilitation strategies.Journal of clinical orthopaedics and trauma · 2025Review
- Impact of Biomechanical, Anthropometric, and Temporal Factors on the Return-to-Sport Rate in Recreational Athletes with ACL Reconstruction: A Cross-Sectional Observational Study.Healthcare (Basel, Switzerland) · 2025Article
- Sport-specific training and return to sport after ACL reconstruction in elite athletes: a narrative review.Annals of joint · 2025Review
- Lower limb muscle activation and biomechanics during single-leg hopping in different directions.Frontiers in sports and active living · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
Abstract
backgroundHop testing is widely used by clinicians to monitor rehabilitation and decide when to return to sport following anterior cruciate ligament reconstruction (ACLR); however, the trajectory of long-term hop performance has not been summarised.
objectiveTo investigate hop performance change over time after ACLR.
designSystematic review with longitudinal meta-analysis. DATA SOURCES: MEDLINE, EMBASE, CINAHL, Scopus, Cochrane CENTRAL and SPORTDiscus to 28 February 2023. ELIGIBILITY CRITERIA: Studies with ≥ 50 participants following primary ACLR, with mean participant age of 18-40 years, reporting a quantitative measure of hop performance (e.g. single forward hop distance). Results had to be reported for the ACLR limb and compared with (1) the contralateral limb (within person) and/or (2) an uninjured control limb (between person).
resultsWe included 136 studies of 23,360 participants. Performance was similar across different hop tests, with steep initial improvements in within-person symmetry, tailing off after 18-24 months. ACLR limb hop performance was 5-10% lower compared with the contralateral limb at 1 year post-surgery, with largest deficits observed for vertical hop [87.0% contralateral limb (95% CI 85.3-88.8) compared with single forward hop 93.8% (95% CI 92.8-94.9)]. By 3-5 years, results were similar between ACLR and contralateral limbs. There were limited data for between-person comparisons (n = 17 studies). Exploratory analyses showed deficits in all forward hopping tests to be very strongly correlated with each other [e.g. single forward and triple hop rho = 0.96 (95% CI 0.90-0.99)], though there was discordance in the relationship between single forward hop and vertical hop performance [rho = 0.27 (95% CI - 0.53 to 0.79)].
conclusionsHop performance is comparable to the uninjured limb by 3-5 years post-ACLR, with the greatest deficits in within-person symmetry present in vertical and side hop tests. Assessment of hopping in multiple planes and comparison with uninjured controls, may provide the most complete evaluation of functional performance.
Indexed as
Identifiers
What OpenQuestion holds
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.