Knees affected by ACL injury or reconstruction took longer to stabilize after landing
Pooled studies found slower stabilization during forward jump landings, without establishing readiness to return to sport.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
After a forward jump landing, knees affected by anterior cruciate ligament injury or reconstruction took longer than healthy knees to become stable. Differences appeared in both forward-backward and vertical measurements. This supports a task-specific difference in landing control, but the abstract does not show whether the measure predicts reinjury or recovery.
Directional results came from small study subsets. This abstract-based summary cannot assess precision or recovery stage fully because confidence intervals and time since injury or surgery were not reported.
What researchers found
Vertical time to stabilization
Affected versus healthy knees during forward jump landings; time since injury or surgery not reported. SMD measures the average difference in standard deviations (the spread of measurements within groups). Positive means longer stabilization; the value is not in seconds.
Measuring landing control
The review examined methods for measuring landing stability, including time to stabilization and a dynamic stability index. The reported pooled results focused on how long knees took to stabilize after forward jump landings.
What remains unanswered
These measurements describe landing control during a specific task. The abstract does not establish whether stabilization time predicts reinjury, tracks recovery or can determine readiness to return to sport.
The original publication
Assessment of Landing Stability in Patients After Anterior Cruciate Ligament Injury and Reconstruction: A Systematic Review and Meta-analysis.
Chen Y, Zheng S, Yu L et al.
Sports Health · 2026
- PubMed ID
- 41017646
- Record checked
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