Effects of Artificial Leg Length Discrepancies on the Dynamic Joint Angles of the Hip, Knee, and Ankle During Gait

Kim  Yong-wook (김용욱); Seung-Yeon Jo (조승연); Yeoung-In Byeon (변영인); Ji-Ho Kwon (권지호); Seok-Hee Im (임석희); Su-Hyeon Cheon (천수현); Kim Eun Joo (김은주)

doi:10.13066/kspm.2019.14.1.53

Effects of Artificial Leg Length Discrepancies on the Dynamic Joint Angles of the Hip, Knee, and Ankle During Gait

Journal of the Korean Society of Physical Medicine
Abbr : J Korean Soc Phys Med
2019, 14(1), pp.53-61
DOI : 10.13066/kspm.2019.14.1.53
Publisher : The Korean Society of Physical Medicine
Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
Received : December 4, 2018
Accepted : January 3, 2019
Published : February 28, 2019

Kim Yong-wook ¹, Seung-Yeon Jo ¹, Yeoung-In Byeon ¹, Ji-Ho Kwon ¹, Seok-Hee Im ¹, Su-Hyeon Cheon ¹, Kim Eun Joo ¹

¹전주대학교

Accredited

ABSTRACT

PURPOSE: This study examined the dynamic range of motion (ROM) of the hip, knee, and ankle joint when wearing different shoe sole lifts, as well as the limb asymmetry of the range according to the leg length discrepancy (LLD) during normal speed walking. METHODS: The participants were 40 healthy adults. A motion analysis system was used to collect kinematic ROM data. The participants had 40 markers attached to their lower extremities and were asked to walk on a 6 m walkway, under three different shoe lift conditions (without an insole, 1 cm insole, and 2 cm insole). Visual3D professional software was used to coordinate kinematic ROM data. RESULTS: Most of the ROM variables of the short limbs were similar under each insole lift condition (p>.05). In contrast, when wearing a shoe with a 2 cm insole lift, the long limbs showed significant increases in flexion and extension of the knee joint as well as; plantarflexion, dorsiflexion, pronation, eversion, and inversion of the ankle joint (p<.05). Of the shoes with the insole lifts, significant differences in all ROM variables were observed between the left and right knees, except for the knee internal rotation (p<.05). CONCLUSION: As the insole lift was increased, more ROM differences were observed between the left and right limbs, and the asymmetry of the bilateral lower limbs increased. Therefore, appropriate interventions for LLD are needed because an artificial mild LLD of less than 2.0 cm could lead to a range of musculoskeletal problems of the lower extremities, such as knee and ankle osteoarthritis.

KEYWORDS

Gait, Joint range of motion, Leg length discrepancy

Citation status

* References for papers published after 2023 are currently being built.

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This paper was written with support from the National Research Foundation of Korea.

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Journal of the Korean Society of Physical Medicine 2023 KCI Impact Factor : 0.45

Effects of Artificial Leg Length Discrepancies on the Dynamic Joint Angles of the Hip, Knee, and Ankle During Gait

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* References for papers published after 2023 are currently being built.

Journal of the Korean Society of Physical Medicine 2023 KCI Impact Factor : 0.45

Effects of Artificial Leg Length Discrepancies on the Dynamic Joint Angles of the Hip, Knee, and Ankle During Gait

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