Effects of restriction of forefoot rocker functions by immobilisation of metatarsophalangeal joints on kinematics and kinetics during walking |
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| Affiliation: | 1. Department of Physical Therapy, Yamagata Prefectural University of Health Sciences, 260 Kamiyanagi, Yamagata-city, Yamagata 990-2212, Japan;2. Graduate School of Systems Design, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachioji-city, Tokyo 192-0397, Japan;3. Department of Rehabilitation, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan;4. Department of Physical Therapy, Faculty of Health Science, Juntendo University, 2-1-1 Hongo Bunkyoku, Tokyo 113-0033, Japan;5. Preparing Section for New Faculty of Medical Science, Fukushima Medical University, 1 Hikarigaoka, Fukushima City 960-1295, Japan;1. University of Tunis El Manar Faculty of Medicine of Tunis, Tunis, Tunisia;2. Mohammed Kassab National Institute of Orthopaedics, Rheumatology Department, La Mannouba, Tunisia;3. Research Unit UR17SP04, 2010 Ksar Said, Tunis, Tunisia;1. Department of Orthopaedics, All India Institute of Medical Sciences, Bathinda, Punjab, India;2. Department of Orthopaedics, Pt B.D. Sharma, Post Graduate Institute of Medical Sciences, Rohtak, Haryana, India;3. Department of Orthopaedics, Lady Harding Medical College, New Delhi, India;1. Keele Medical School, University of Keele, Staffordshire, ST5 5BG, UK;2. RJAH Orthopaedic Hospital NHS Foundation Trust, Oswestry, Shropshire SY10 7AG, UK;3. Foot and Ankle Surgical Team, RJAH Orthopaedic Hospital NHS Foundation Trust, Oswestry, Shropshire SY10 7AG, UK;1. Department of orthopaedics, North Tees and Hartlepool NHS Trust, Hardwick road, Stockton on Tees, TS18 9PE, UK;2. North Tees and Hartlepool NHS Trust;3. Manchester University NHS Foundation Trust;1. Department of Kinesiology, University of Virginia, 210 Emmet Street South, Charlottesville, VA 22904-4407, USA;2. Warfighter Performance Department, Naval Health Research Center, San Diego, CA;1. Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran;2. Department of Human Performance and Health, University of South Carolina Upstate, Spartanburg, SC, United States;3. Neuromusculoskeletal Research Center, Department of Physical Medicine and Rehabilitation, Firozgar Hospital, Iran University of Medical Sciences, Tehran, Iran;4. Department of Orthotics & Prosthetics, Iran University of Medical Sciences, Tehran, Iran |
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| Abstract: | ObjectiveThis study was conducted to investigate the effects of restriction of forefoot rocker (FFR) functions by immobilisation of unilateral metatarsophalangeal joints (MPJs) on kinematic and kinetic factors during walking.MethodsEighteen healthy young adults participated in this study. To immobilise the MPJs of the right leg, an aluminium sole plate (AS) was fixed on the sole of the foot. Kinematic and kinetic data were collected while each subject walked at a comfortable speed with the AS and without.ResultsIn the AS condition, the walking speed and contralateral step length were significantly decreased, and an asymmetrical centre of mass (COM) movement was observed. The range of plantarflexion motion and positive work by the ankle joint were decreased markedly during the late stance of the AS limb. In contrast, maximum hip and knee flexion angles in the swing phase of the AS limb and positive work by the bilateral hip joints over the gait cycle were increased.ConclusionsThe results suggested that MPJ immobilisation may result in marked motion limitation of ankle plantarflexion and inhibition of push-off by the ankle joint despite no restrictions on the ankle joint. These changes may interfere with gait speed and a smooth and symmetrical COM shift during walking. |
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| Keywords: | Gait analysis Forefoot rocker Metatarsophalangeal joint Kinematics Kinetics Centre of mass |
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