Biomechanical effects of lateral wedged insoles and ankle foot orthosis on medial compartment knee osteoarthritis by in-shoe pressure analysis and lower limb posture scanning
Refereed conference paper presented and published in conference proceedings
CUHK Authors
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AbstractOsteoarthritis knee (OA knee) is usually affected by increased medial contact forces and knee adduction moment (KAM). Lateral wedged insoles (LWI) were found to reduce the medial joint loading and pain. However, there is a contradiction in the biomechanical effects of LWI which may be due to the compensatory ankle motions and gait patterns. Limited research investigates its relations with weight-bear loading of lower limbs and in-shoe pressure. This study aims to examine the combined biomechanical impact of LWI and ankle foot orthosis (AFO) and knee pain improvement. 16 subjects were categorised into LWI group and LWI with AFO group. In-shoe pressure analysis and weight-bearing line scanning were taken in the first attendance. Results of Knee Injury and Osteoarthritis Outcome Score (KOOS), pain intensity and OA knee functional tests were compared at 0 weeks and 8 weeks. Maximum force in medial heel was significantly reduced in LWI with AFO group by providing additional inversion and eversion control, arch support and stability. Shifting of lower limb weight-bearing lines showed no significant results in two groups. In KOOS and VAS, knee pain and symptoms were significantly reduced in LWI with AFO group. In OA knee tests, walking speed in Timed Up-and-Go test was significantly reduced in LWI with AFO group. This study provided a comprehensive review for enhancing the prescription of LWI and/or AFO depending on different foot type. The measurement method of this study could be a cost-effective and objective method for investigation of the effect of load-modifying footwear.
All Author(s) ListEmily Wai-yin Chung, Michael Tim-yun Ong, Denis Shu-ming Wong, Patrick Shu-hang Yung
Name of ConferenceThe HKOA 43rd Annual Congress of The Hong Kong Orthopaedic Association
Start Date of Conference04/11/2023
End Date of Conference05/11/2023
Place of ConferenceHong Kong
Country/Region of ConferenceHong Kong
Year2023
Month11
PublisherHong Kong Academy of Medicine Press
Place of PublicationHong Kong
Pages108 - 108
LanguagesEnglish-United States
