Objective: The objective of this systematic review was to evaluate the association
between ankle dorsiflexion (DF) range of motion (ROM) and dynamic knee valgus
(DKV). Methods: Electronic searches were conducted in MEDLINE, EMBASE,
CINAHL and SPORTDiscus. A modified Downs and Black checklist was used for
quality assessment and meta-analysis was performed to compare standardised mean
differences (SMD) of DF ROM outcomes. Results: Seventeen studies met the inclusion
criteria. Meta-analysis showed that reduced DF ROM is associated with participants
presenting with DKV compared to controls (SMD -0.65, 95% CI -0.88 to –0.41).
Subgroup analysis showed consistent results regarding different forms of DF ROM
measurement; restriction in DF ROM measured in weight-bearing position (SMD -1.25,
95% CI -2.24 to -0.25), non-weight-bearing with knee flexed (SMD -0.56, 95% CI -
0.97 to -0.16) or non-weight-bearing with knee extended (SMD -0.54, 95% CI -0.80 to -
0.28) was significantly associated with DKV. Conclusion: The meta-analysis results
provide evidence that reduced DF ROM is correlated with DKV. The assessment of DF
ROM in the clinical setting is important, as it may be related to harmful movement
patterns of the lower limbs.