Is Deceleration the Key Element in Vertical Jump Performance to Return to Sport After Anterior Cruciate Ligament Reconstruction With Hamstring Graft? A Preliminary Study.
Florian Forelli, Ayrton Moiroux-Sahraoui, Branis Nekhouf and 9 others
PMID 40904711WHAT IT FOUND
At six months after ACL reconstruction, deceleration symmetry did not show a clear group difference, but jump force and power symmetry were lower than controls.
The reconstructed limb also had lower force, power, and deceleration than the other limb.
Key findings
01In the group comparison, limb symmetry for vertical ground reaction force and maximal power was lower in the ACLR group than in controls, while deceleration symmetry did not show a clear difference.
02Within the ACLR group, the operated limb had lower vertical ground reaction force, maximal power, and deceleration rate of force development than the non-operated limb.
03In controls, no clear differences were seen between dominant and non-dominant limbs for vertical ground reaction force, maximal power, or deceleration rate of force development.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The control group was younger than the ACLR group, so age could have influenced the jump differences. The study did not account for how long participants had been allowed to jump after surgery, so recent return to jumping could lower performance. Rehabilitation programs were similar across centers, but individual variation in rehabilitation phases was not controlled. Fear of reinjury or apprehension was not measured, which could affect jump performance in the ACLR group. It was a preliminary, non-randomized cross-sectional study, so it cannot show that these jump differences predict return to sport or reinjury.
Declared interests
The authors declare no conflicts of interest.
The easy way to misread this
Do not read these jump asymmetries as proof that a patient is not ready to return to sport. The study was preliminary and cross-sectional, so it cannot show whether these jump differences predict return to sport or reinjury. The control group was younger.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →