Search Results for: biomechanics

November 2015

Barefoot running: Debate moves to developing feet

The most public battles about barefoot running and minimalist footwear have been fought over their use by adult athletes and the clinicians who treat them. There is, however, a separate discussion underway regarding barefoot and minimally shod running in children.

By Cary Groner Continue reading

November 2015

Biomechanical care for juvenile idiopathic arthritis

Juvenile idiopathic arthritis (JIA) affects nearly a quarter of a million US kids younger than 16 years. The hallmarks of the autoimmune disorder include joint inflammation, stiffening, and damage, as well as changes in joint growth, all of which can prove painful.

By Shalmali Pal
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November 2015

Equinus: Its surprising role in foot pathologies

Although milder than the spasticity-induced cases of equinus, limited ankle dorsiflexion in the non-neurological pop­ulation is increasingly recognized as a source of excessive strain throughout the foot and a factor in the pathogenesis of many foot conditions.

By Nicholas V. DiMassa and Jeffrey M. Whitaker DPM, FACFAS    Continue reading

November 2015

Quadriceps symmetry after ACL reconstruction

Using muscle function symmetry as an indicator of patient progress after anterior cruciate ligament (ACL) reconstruction can provide insight about potential targets for intervention to improve movement quality, functional performance, and patient outcomes.

By Christopher Kuenze, PhD, ATC; and Adam Kelly, MS, ATC      Continue reading

November 2015

Cartilage thickness study suggests role of kinetics changes with OA severity

Although knee adduction moment (KAM) plays a significant role in patients with severe knee osteoarthritis (OA), knee flexion moment (KFM) may be more important early in the disease process, according to research from Stanford University in California.

By Jordana Bieze Foster

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November 2015

Patient-reported function, kinematics predict response to hip strengthening

Patient-reported function and lower extremity kinematics can predict response to a hip strength­ening intervention in patients with knee osteoarthritis (OA), according to research from the University of Calgary in Alberta, Canada.

By Jordana Bieze Foster

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November 2015

OHI acquires custom orthotic lab Footbon

Ronkonkoma, NY-based Orthotic Holdings (OHI) in October acquired the custom foot orthotic laboratory Footbo ̄n. Paul Langer, who founded Huntington, NY-based Footbo ̄n in 2009, has joined OHI’s Langer Biomechanics as… Continue reading

October 2015

Seeking shoe closure: Laces vs alternatives

The footwear industry is teeming with alternatives to traditional shoelaces—including Velcro, no-tie elastic systems, and clutch reel technology—that may offer advantages for certain individuals. But for many people, experts say, laces will work just as well.

By Shalmali Pal Continue reading

October 2015

Bunion surgery: Evolution of postoperative protocols

Research is starting to reveal that early weightbearing, physical therapy, or both after hallux valgus surgery is not as risky as some practitioners once thought, and such new postoperative protocols appear to be associated with improved outcomes.

By Barbara Boughton Continue reading

October 2015

Shoes, orthoses improve muscle activation onset in unstable ankles

Custom insoles have greatest effect – A study of patients with chronic ankle instability (CAI) suggests the onset of knee and ankle muscle activity occurs significantly earlier when shoes and orthoses are worn than when the patients are barefoot.

By John C. Hayes Continue reading

October 2015

Out on a limb: Smoke signals

My grandmother smoked for decades, and although she did eventually succeed in quitting, she still spent the last few years of her life linked to an oxygen tank. And as a medical journalist, I’m very familiar with the long list of health-related disadvantages of smoking…

Jordana Bieze Foster, Editor Continue reading

October 2015

Running in an exerted state: mechanical effects

Kinematic and kinetic alterations in the lower extremities that researchers have observed during the course of a prolonged run may provide clinically relevant insights into patellofemoral pain and other conditions associated with a gradual onset of symptoms during exercise.

By Lauren Benson, MS; and Kristian O’Connor, PhD Continue reading

October 2015

Post-polio syndrome: It takes a team approach

Along with technical issues related to muscle weakness, fatigue, and pain, the challenges of managing this hetero­gen­eous population include patients’ emotional response to the idea of needing an orthotic device for a disability they thought they had overcome.

By Larry Hand Continue reading

October 2015

3D printing of orthotic devices: Evidence from the literature

In the past two decades, additive manufacturing—commonly known as 3D printing—has evolved from a bleeding-edge, high-priced prototype with limited compositional materials to moderately priced systems with a wealth of manufacturing possibilities.

By Shalmali Pal Continue reading

September 2015

ASU installs $500K virtual reality gait lab

Alabama State University’s (ASU) Biomechanics and Motor Control Laboratory in Montgomery in August installed an advanced gait analysis device that places patients in virtual reality simulations. Continue reading

September 2015

Tibial stress fractures: an evidence-based approach

Study findings suggest that increased loading rates and tibial acceleration are associated with an increased risk of sustaining a tibial stress fracture. Interventions directed at reducing these impact…

By CPT Jamie B. Morris, DPT, OCS, CSCS, and LTC Donald L. Goss, PT, PhD, OCS, ATC Continue reading

September 2015

Surface EMG: A how-to guide for practitioners

With evidence-based protocols in hand, practitioners can feel more comfortable clinically integrating surface electromyography (sEMG) assessment, creating more sophisticated sEMG treatment protocols, and demonstrating the effectiveness of interventions.

By Rachelle Bordlee, sDPT, and Christopher Kevin Wong, PT, PhD Continue reading

September 2015

Femoroacetabular impingement alters motion at both foot and hip during gait

Individuals with femoroacetabular impingement (FAI) demonstrate alterations in foot mechanics as well as hip mechanics, a finding that may have implications for orthotic management of this population, according to an Israeli study. Continue reading

September 2015

Risks of rigidus: Arthritis boosts hallux reamputation rates

Patients with diabetic neuropathy and hallux rigidus (HR) undergoing partial amputation of the hallux are 7.7 times more likely to need reamputation than their counterparts without HR, according to research from Georgetown University in Washington, DC. Continue reading

Special Sections

CONFERENCE COVERAGE: 2015 ISPO World Congress CONFERENCE COVERAGE: Ortho Technology Forum 2015 Orthotic management of CMT: Dynamic solutions for active lifestyles CONFERENCE COVERAGE: Orthotics Technology Forum 2014 ATHLETES AND INJURIES: The global question of prevention CONFERENCE COVERAGE: Orthotics Technology Forum … Continue reading

Good Shoe! London exhibit puts footwear in the spotlight

By Shalmali Pal It may seem a bit odd that Clarks would sponsor an exhibit called “Shoes: Pleasure and Pain” at the Victoria and Albert Museum in London, UK. After all, the company is known for producing very practical footwear, … Continue reading

August 2015

Muscle force changes vary after gait modification to reduce knee moment

A single gait modification to reduce knee adduction moment in patients with knee osteoarthritis (OA) is associated with muscle force pattern changes that vary from one patient to another, according to research from Shanghai, China.

By Jordana Bieze Foster Continue reading

September 2015

3D printing: An overview of lower extremity applications

The world of 3D printing has opened up new possibilities in every area of healthcare, including that of lower extremity medicine. 3D printing—sometimes called additive manufacturing—has already led to major changes in healthcare, but experts say…

By Shannon Lee Continue reading

August 2015

Sports compression garments: the expectations vs the evidence

Research suggests that compression garments can be effective for improving muscle recovery after fatiguing exercise, but has found little to indicate an athletic performance benefit.

By P.K. Daniel Continue reading

August 2015

Running modifications to alter PFJ contact force

Patellofemoral pain interventions have increasingly focused on running technique and training approaches—such as utilization of a forefoot strike pattern, a shortened step length, and manipulations to training pace—to reduce patellofemoral joint loading parameters.

By Collin D. Bowersock, BS, and John D. Willson, PT, PhD Continue reading