Search Results for: biomechanics

July 2021

Now We Know: Virtual Is Real

Lower Extremity Review reminds us of Bob Dylan’s famous line, “the times they are a-changin’,” as we emerge from the COVID-19 pandemic lockdown. But one has to wonder a bit why it took the pandemic to induce 1 very large change we all experienced: the shift from centralized to decentralized workspaces, at least for those of us in academia.

By Paul DeVita, PhD Continue reading

July 2021

Making the “New Normal” a “Smarter Normal”

The times are definitely changing and will continue to change for the better. As the rest of the world pulls down their masks, we in the medical community will continue to stay masked, prepared, and ready for change.

By Philip Stotter, CEP Continue reading

June 2021

Pregnancy Part 1: Is Walking Adequate Fitness During Pregnancy?

There is no question that walking is generally a good form of exercise. However, it is not always appropriate during all phases of pregnancy, nor does it adequately prepare a woman for delivery or the fourth ‘Tornado’ Trimester. Long gone are the days of no lifting and putting your feet up during pregnancy. Pregnancy is the time to ‘train’ for a postnatal marathon that will last several years in a sleep-deprived state.

By Tracie Smith-Beyak Continue reading

June 2021

Can Proprioception Be Improved?

This 6th sense helps our body understand where it is in space and how to move in response to countless signals between the brain and millions of receptors throughout the body. To move safely in this world, our body needs to understand where it is in the environment. Key among the players accomplishing this complex task is the…

By Janice T. Radak Continue reading

May 2021

Is Standing on 2 Feet Such a Complex Task?

The answer is Yes and here is how to tune it. Standing upright: step-by-step instructions. Whenever I have the chance, I enjoy observing people’s standing posture while waiting for a bus at the NYC Port Authority Bus Terminal in New York City.

By Dalia Zwick, PT, PhD – Images created by the author Continue reading

April 2021

Gait and Balance Academy: How Do We Use Gait Analysis to Measure Walking Consistency?

Have you ever asked yourself this simple question: why do we measure and analyze gait? Overall, the answers will revolve around the same ideas: to gauge the functional status of a person; to follow-up the natural history of a disease; to determine immediate or long-term treatment requirement and effects.

By Arnaud Gouelle, PhD, and Patrick Roscher, MS Continue reading

April 2021

Perspective 360: Of Gait Analyses and Elephants

While researching the history of gait analysis to prepare for this issue, the parable of the blind men and the elephant kept coming to mind. The ancient story is of a group of blind men who have never seen an elephant. On encountering a live elephant, they each touch a different part of the large mammal and come away thinking they know what it is. Continue reading

March 2021

Expert Opinion: Functional Medicine Takes On Chronic Posterior Tibial Tendinitis

As a practicing podiatrist for 40 years, I have seen thousands of patients. About 33 years ago, I became frustrated with the fact that although many of my patients responded to conventional treatment, many did not, and I wanted to know why. To me, this was the missing link in improving my percentage of successful outcomes.

By Robert Kornfeld, D.P.M. Continue reading

November 2020

Editorial Appreciation: 2020: The Year That Was!

Some years it’s hard to say good-bye…and then there’s 2020. We’re sure we’re not the only ones happy to see it in the rearview mirror. But to just drive away is to ignore the words of Socrates, who rightfully said…

By Janice T. Radak, Editor, and Rich Dubin, Publisher Continue reading

November 2020

Letter to Editor: Transverse Arch Importance Overstated

I write in response to the September 2020 LER article, “Overlooked Arch in the Foot Is Key to its Evolution and Function,” by William Weir, which discusses the article, “Stiffness of the Human Foot and Evolution of the Transverse Arch,” by Venkadesan et al, published in Nature in early 2020.

By Kevin A. Kirby, DPM Continue reading

November 2020

3D Printed Insoles Offers New Hope for Patients with Diabetes

Scientists from Staffordshire University, England, claim that their new 3D-printed insoles can improve the foot health of people suffering with diabetes. Their study is said to present the first quantitative evidence in support of optimized cushioning in diabetic footwear as… Continue reading

November 2020

Clinical Applications of Custom 3D Printed Implants in Complex Lower Extremity Reconstruction

The authors present four cases of complex lower extremity reconstruction involving segmental bone loss and deformity – failed total ankle arthroplasty, talus avascular necrosis, ballistic trauma, and nonunion of a tibial osteotomy.

By Rishin J. Kadakia, MD, Colleen M. Wixted, Nicholas B. Allen, Andrew E. Hanselman, MD, and Samuel B. Adams, MD Continue reading

November 2020


NURVV is the pioneer of foot-based wearable technology using biomechanics. It’s on a mission to provide runners with the power to understand what their bodies are truly capable of and find their true potential. Continue reading

October 2020

Gait Speed as Risk Tool for Falls

Keeping older adults physically active is critical to health maintenance and walking is a key form of exercise for this population. However, foot pain represents a leading cause of mobility limitations and lower quality of life in older individuals. Nearly 25% of adults report foot pain, and those with frequent foot pain are at double the risk of falling. Continue reading

September 2020

The Dirty Truth About Being Biped

What bears don’t know didactically about forces, shock, and kinetic chain, they understand naturally, instinctually, and it is evidenced by the way they move. Bears can stand on two legs, play, pose, and walk as bipeds do, but when it comes to motion involving speed, safety, or…

By Jay Segel, DPM; Sally Crawford, MS; Grace Juriel; and Jason Kraus Continue reading

September 2020

Gait Biofeedback and Impairment-based Rehabilitation

In a study that debuted at the National Athletic Trainers Association virtual meeting and was subsequently published later, a multidisciplinary team of clinicians sought to analyze the effects of visual gait biofeedback along with impairment-based rehabilitation on gait biomechanics in a group of patients with chronic ankle instability (CAI). Continue reading

September 2020


The “enhanced paper grip test,” validated by researchers from the Centre for Biomechanics and Rehabilitation Technologies (CBRT) at Staffordshire University, England, involves pulling a small card from underneath the participant’s foot while asking them to grip with their big toe (hallux). Continue reading

August 2020

Bike Fitting as a Diagnostic Tool

Like a good medical exam, a medical bike fit starts before the patient ever gets on the bike. Talking with cycling patients before any assessments can facilitate the diagnostic process. Bike fitting is a service that has been offered in bike shops and studios for decades. Bike fitting is also a medical service offered by physicians, physical therapists, chiropractors, and other qualified health care providers.

By Andrea Myers, PT, DPT Continue reading

July 2020

DorsiFLEX: Physical Therapy Device for the Treatment and Prevention of Plantar Fasciitis, and More

Jim Cooper, a world-class runner during the 1980s and early 1990s, developed bilateral plantar fasciitis late in his running career. He sought help from a physical therapist, he says, and was given stretching exercises to do—wall leans, heel drops, and pulling on his toes with a towel—none of which seemed to help. Continue reading

June 2020

Peroneal Tendonitis: Workup and Nonsurgical Treatment

More than “just a sprain,” accurately diagnosing peroneal tendonitis in a timely manner helps patients recover faster and avoid long-term sequelae from this painful condition. Peroneal tendon disorders have traditionally been considered a rare source of ankle symptoms.

By Kevin Haag, DPM, PGY-3, and Marshall Solomon, DPM Continue reading

June 2020

What If the Ankle Is More Than a Class 2 Lever?

The realm of orthotics and prosthetics (O&P) is based on gaining leverage for patients and eking out power when strength is not plentiful. A physical therapist will work with a patient over time to gain power through strengthening exercises where the surgeon may be focused on securing a torn ligament or fracture in hours.

By Thomas J. Cutler, CPO, FAAOP Continue reading

June 2020


People with multiple sclerosis (MS) often have a greatly increased risk of falling and injuring themselves even when they feel they’re able to walk normally. Now a team led by scientists from The University of North Carolina (UNC) Chapel Hill School of Medicine has… Continue reading

June 2020


SubioMed, Bloomington, MN, the inventor/developer of Suspension Biomechanics technology addressing elements of gait and balance, announced that the company’s chief executive officer and co-founder, Patrick Kullman, has also been appointed chairman of its board. Continue reading

May 2020

CRITICAL ANALYSIS: Prefab or Custom: Which Foot Orthosis Is Better for Plantar Heel Pain?

Recent analysis of the podiatric literature concludes that custom foot orthoses aren’t superior to prefab inserts—an account one expert rejects. It’s a matter of who does the custom work, he says.

By Stanley Beekman, DPM Continue reading

May 2020

Starting with gait retraining: an analysis of changes in impact over time

The repetitive impact that is experienced upon collision with the ground may be related to running injuries but is modifiable. Lower-impact running can be achieved by receiving biofeedback in response to the peak tibial acceleration, but when are runners adapting to lower-impact running?

By the Biomechanics of Human Movement research group of Ghent University Continue reading