Nachiappan Chockalingam, professionally known as Nachi Chockalingam is a British scientist, academic practitioner and expert in Clinical Biomechanics. He is a professor at Staffordshire University and a Fellow of the Institute of Physics and Engineering in Medicine and has been appointed to a panel of experts for the Research Excellence Framework. He was elected as a Fellow of the International Society of Biomechanics in 2023. Between 2016 and 2022, he has contributed to the NIHR Research for Patient Benefit Panel and serves in multiple other review panels of global grant awarding bodies including the EPSRC, MRC and the European Commission. He contributed to development of podiatric biomechanics in the UK and played a pivotal role in the establishment of the journals such as the Footwear Science [1] and is on the editorial panel for a number of scientific and clinical journals. [2]
Chockalingam holds a BEng in Electronics and Instrumentation Engineering from Annamalai University, India. In 1990, he obtained an MSc in Biomedical Engineering Science from Dundee University before proceeding to Staffordshire University where he completed a PhD in Clinical Biomechanics. His doctoral research investigated the biomechanics of scoliosis. [3]
Chockalingam has international recognition in work across science, technology, engineering and medicine [4] [5] and has contributed extensively to synthesising scientific and clinical evidence. [6] [7] [8] [9] [10] [11] [12] [13] [14] He has experience in the academic, industrial and clinical sectors through his collaboration with external partners in commercial consultancy, international policy and non-governmental organisations. Whilst playing a substantial role in establishing research and academic governance procedures including the establishment of research ethics policy at Staffordshire University, Chockalingam has set up the Centre for Biomechanics and Rehabilitation Technologies. He reached the position of the most senior professor at Staffordshire University and established the current version of the Staffordshire University Professoriate and led it between 2013 and 2020. [15] He has been involved with learned societies such as the International Society of Biomechanics, International Research Society for Spinal Deformities and the Footwear Biomechanics Group at various levels of leadership.
Chockalingam has made extensive academic contributions to understanding adolescent idiopathic scoliosis. [16] [17] [18] He is a founding member of the Diabetic Foot Research Group and a visiting professor at the University of Malta. [19] He also has visiting positions in other academic institutions in the United Kingdom, India and China. Chockalingam has contributed to the development of a culturally competent model of diabetic foot screening [20] at the primary healthcare level and has made important contributions to the identification of priority areas [21] for diabetic foot screening [22] and the provision of rehabilitation and assistive technology. [23] His current work focuses on policy areas related to Allied Health Professionals and telehealth. [24] [25] [26] [27] Recently, he was involved in the launching of a new policy brief to guide the creation of telehealth patient consultation guidelines and training for AHPs. [28] Chockalingam contributes to the developmental work on the provision of assistive technology in the ‘Global South’ [29] and continues to raise awareness on health inequalities and cultural competency in health screening.
At a national level, for REF2021, Chockalingam has been appointed to the Panel of Experts within Subpanel 24 - Sport and Exercise Sciences, Leisure and Tourism. [30] He is also listed as an expert to the European Parliament in policy areas relating to the assessment of new and emerging technologies, and foresight on long-term scientific and technological trends. He is a trustee for Age UK Staffordshire, [31] Bionic Charity and recently Human Study AV. [32] He was involved in the development of a Field Ventilator in response to the COVID-19 pandemic.
As a Freeman of the City of London, he is involved with the activities of the Worshipful Company of Engineers. [33] He was presented with a Lord Mayor’s COVID-19 Livery Award for his work on the innovative Field Ventilator project. [34] He was recognised with a Honorary Fellowship of the Royal College of Podiatry in 2023. Honorary fellowship is bestowed upon individuals who have made a substantive and significant contribution to the advancement of the podiatric profession in any of the fields of clinical practice, education, service management or research. [35]
Chockalingam has numerous scholarly outputs which include peer-reviewed papers, [36] published abstracts and book chapters, invited and keynote presentations at international conferences, [37] national and regional meetings. [38]
A shoe is an item of footwear intended to protect and comfort the human foot. Though the human foot can adapt to varied terrains and climate conditions, it is vulnerable, and shoes provide protection. Form was originally tied to function, but over time, shoes also became fashion items. Some shoes are worn as safety equipment, such as steel-toe boots, which are required footwear at industrial worksites.
Scoliosis is a condition in which a person's spine has an abnormal curve. The curve is usually S- or C-shaped over three dimensions. In some, the degree of curve is stable, while in others, it increases over time. Mild scoliosis does not typically cause problems, but more severe cases can affect breathing and movement. Pain is usually present in adults, and can worsen with age. As the condition progresses, it may impact a person's life, and hence can also be considered a disability.
A podiatrist is a medical professional devoted to the treatment of disorders of the foot, ankle, and related structures of the leg. The term originated in North America but has now become the accepted term in the English-speaking world for all practitioners of podiatric medicine. The word chiropodist was previously used in the United States, but it is now regarded as antiquated.
The ankle, the talocrural region or the jumping bone (informal) is the area where the foot and the leg meet. The ankle includes three joints: the ankle joint proper or talocrural joint, the subtalar joint, and the inferior tibiofibular joint. The movements produced at this joint are dorsiflexion and plantarflexion of the foot. In common usage, the term ankle refers exclusively to the ankle region. In medical terminology, "ankle" can refer broadly to the region or specifically to the talocrural joint.
A functional spinal unit (FSU) is the smallest physiological motion unit of the spine to exhibit biomechanical characteristics similar to those of the entire spine.
A removable shoe insert, otherwise known as a foot orthosis, insole or inner sole, accomplishes many purposes, including daily wear comfort, height enhancement, plantar fasciitis treatment, arch support, foot and joint pain relief from arthritis, overuse, injuries, leg length discrepancy, and other causes such as orthopedic correction and athletic performance.
Unequal leg length is where the legs are either different lengths or appear to be different lengths because of misalignment. Leg length inequality is very common; small inequalities in leg length may affect 40%-70% of the human population. It has been estimated that at least 0.1% of the population have a difference greater than 20 mm (0.79 in).
Pedobarography is the study of pressure fields acting between the plantar surface of the foot and a supporting surface. Used most often for biomechanical analysis of gait and posture, pedobarography is employed in a wide range of applications including sports biomechanics and gait biometrics. The term 'pedobarography' is derived from the Latin: pedes, referring to the foot, and the Greek: baros meaning 'weight' and also 'pressure'.
Diabetic shoes are specially designed shoes, or shoe inserts, intended to reduce the risk of skin breakdown in diabetics with existing foot disease and relieve pressure to prevent diabetic foot ulcers.
Pronation is a natural movement of the foot that occurs during foot landing while running or walking. Composed of three cardinal plane components: subtalar eversion, ankle dorsiflexion, and forefoot abduction, these three distinct motions of the foot occur simultaneously during the pronation phase. Pronation is a normal, desirable, and necessary component of the gait cycle. Pronation is the first half of the stance phase, whereas supination starts the propulsive phase as the heel begins to lift off the ground.
David G. Armstrong is an American podiatric surgeon and researcher most widely known for his work in amputation prevention, the diabetic foot, and wound healing. He and his frequent collaborators, Lawrence A. Lavery and Andrew J.M. Boulton, have together produced many key works in the taxonomy, classification and treatment of the diabetic foot. He is Professor of Surgery with Tenure and director of the Southwestern Academic Limb Salvage Alliance (SALSA) at the Keck School of Medicine of the University of Southern California and has produced more than 650 peer reviewed manuscripts and more than 110 book chapters.
Orthotics is a medical specialty that focuses on the design and application of orthoses, sometimes known as braces or calipers. An orthosis is "an externally applied device used to influence the structural and functional characteristics of the neuromuscular and skeletal systems." Orthotists are professionals who specialize in designing these braces.
Children's feet are smaller than those of adults, not reaching full size until the ages of 13 in girls and 15 in boys. There are correspondingly small sizes of shoes for them. In poor populations and tropical countries, children commonly go barefoot.
A diabetic foot disease is any condition that results directly from peripheral artery disease (PAD) or sensory neuropathy affecting the feet of people living with diabetes. Diabetic foot conditions can be acute or chronic complications of diabetes. Presence of several characteristic diabetic foot pathologies such as infection, diabetic foot ulcer and neuropathic osteoarthropathy is called diabetic foot syndrome. The resulting bone deformity is known as Charcot foot.
Minimalist or barefoot shoes are intended to closely approximate barefoot running or walking conditions in comparison to traditional shoes. Minimalist shoes are defined as providing "minimal interference with the natural movement of the foot, because of its high flexibility, low heel to toe drop, weight and stack height, and the absence of motion control and stability devices." Minimalist shoes provide more sensory contact for the foot on the ground while simultaneously providing the feet with some protection from ground hazards and conditions. Research shows that wearing a minimalist shoe can help improve running economy, foot strength and arch function.
Diabetic foot ulcer is a breakdown of the skin and sometimes deeper tissues of the foot that leads to sore formation. It may occur due to a variety of mechanisms. It is thought to occur due to abnormal pressure or mechanical stress chronically applied to the foot, usually with concomitant predisposing conditions such as peripheral sensory neuropathy, peripheral motor neuropathy, autonomic neuropathy or peripheral arterial disease. It is a major complication of diabetes mellitus, and it is a type of diabetic foot disease. Secondary complications to the ulcer, such as infection of the skin or subcutaneous tissue, bone infection, gangrene or sepsis are possible, often leading to amputation.
The management of scoliosis is complex and is determined primarily by the type of scoliosis encountered: syndromic, congenital, neuromuscular, or idiopathic. Treatment options for idiopathic scoliosis are determined in part by the severity of the curvature and skeletal maturity, which together help predict the likelihood of progression. Non-surgical treatment should be pro-active with intervention performed early as "Best results were obtained in 10-25 degrees scoliosis which is a good indication to start therapy before more structural changes within the spine establish." Treatment options have historically been categorized under the following types:
The Providence brace is a nighttime spinal orthosis for the treatment of adolescent idiopathic scoliosis (AIS). The brace is used to curb the natural progression of the disease and prevent further curvature of the AIS patient's spine. The Providence brace was developed by Charles d'Amato and Barry McCoy, and is manufactured by Spinal Technology, Inc.
Adolescent idiopathic scoliosis is a rather common disorder in which the spine starts abnormally curving sideways (scoliosis) at the age of 10–18 years old. This disorder generally occurs during the growth spurt that happens right before and during adolescence. In some teens, the curvature is progressive, meaning that it gets worse over time, however this is rare, since it is more common for this variant of scoliosis to show itself as a mild curvature.
Pierre Stagnara was a French spinal surgeon. He has been described as a "pioneer" in the study of spinal deformities, "one of the greatest figures of French spinal surgery." Stagnara was born in January 16, 1917 in Loriol-sur-Drôme, France. He studied medicine in the city of Lyon. During World War II he was drafted into the French army. After the war, he worked in a variety of hospitals throughout Lyon. In 1959 he became the Chief of the Centre des Massues and served in this position until his retirement in 1982. Whilst working at the institution he pioneered many orthopedic techniques. Including the non-surgical management of scoliosis.