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

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

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저자정보: Kim, Yong-Wook (Department of Physical Therapy, College of Medical Sciences, Jeonju University) Jo, Seung-Yeon (Department of Physical Therapy, College of Medical Sciences, Jeonju University) Byeon, Yeoung-In (Department of Physical Therapy, College of Medical Sciences, Jeonju University) Kwon, Ji-Ho (Department of Physical Therapy, College of Medical Sciences, Jeonju University) Im, Seok-Hee (Department of Physical Therapy, College of Medical Sciences, Jeonju University) Cheon, Su-Hyeon (Department of Physical Therapy, College of Medical Sciences, Jeonju University) Kim, Eun-Joo (Department of Occupational Therapy, College of Medical Sciences, Jeonju University)

저널정보: 대한물리의학회 대한물리의학회지 대한물리의학회지 제14권 제1호

발행연도: 2019.1

수록면: 53 - 61 (9page)

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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.

#Gait #Joint range of motion #Leg length discrepancy

참고문헌 (24)

참고문헌 신청

Azizan NA / 2018 / The Effects of Leg Length Discrepancy on Stability and Kinematics- Kinetics Deviations: A Systematic Review / Appl Bionics Biomech :5156348

Beattie P / 1990 / Validity of derived measurements of leg-length differences obtained by use of a tape measure / Phys Ther 70(3):150~157

Bennell K / 1999 / Risk factors for stress fractures / Sports Med 28(2):91~122

Blake RL / 1993 / Correlation between limb length discrepancy and asymmetrical rearfoot position / J Am Podiatr Med Assoc 83(11):625~633

Collins TD / 2009 / A six degrees-of-freedom marker set for gait analysis : repeatability and comparison with a modified Helen Hayes set / Gait Posture 30(2):173~180

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