Brief summary, from the abstract
In this cohort of 78 people one year after ACL reconstruction, those who performed poorly on a battery of hop and one-leg-rise tests had a higher risk of worsening patellofemoral knee changes on MRI over the next four years, though self-reported symptoms and function were largely unaffected.
- Only 14 of 78 participants (18%) passed all four functional tests at a limb symmetry index of 90% or more, one year after surgery.
- Poor performance on all four tests was linked to 3.66 times greater risk of worsening patellofemoral bone marrow lesions (95% CI 1.12 to 12.01).
- A triple-crossover hop below 90% symmetry was linked to 2.09 times greater risk of worsening patellofemoral cartilage (95% CI 1.15 to 3.81).
- Functional performance was generally not associated with tibiofemoral MRI changes or with KOOS and IKDC self-reported scores; this is a single observational cohort of 78 people, so findings show association, not cause.
Clinically assessing this area? See the knee special tests.