3D gait analysis
AI (artificial intelligence) muscle strength testing
Pressure and forces measured with instrumented treadmill
Diagnostic musculoskeletal ultrasonography
Running readiness assessment


In addition to 3D running analysis, we perform:

  • Pressure and force analysis on the Zebris instrumented treadmill
  • Injury screening with diagnostic musculoskeletal ultrasonography
  • A running readiness assessment
  • 17 page report and recommendations

Your personal data is collected by our computerized running ecosystem software, which lets us monitor your runs, provide warmups and cool-downs, and give you exercises to improve your running form.

This type of complete running analysis is not available anywhere else in NYC!

Our Rewards

Running Diagnosis Gait Laboratory

Gait Laboratory

NYDNRehab is the only outpatient clinic in NYC to feature 3D gait analysis technology to detect biomechanical and neuromuscular deficits invisible to the naked eye. Unlike 2D analysis, 3D lets us analyze gait in the transverse plane where most running injuries occur. This data helps us identify compensation patterns and imbalances to get to the underlying source of pain injury and treat it.



Identify biomechanical deficits
Detect asymmetrical strike patterns
Match individual anatomy to optimal motor patterns
Identify individual running style
Gather data for retraining strategies
Assess running economy and efficiency
Provide a baseline for retraining
Reduce the risk of injury



Any runner, from novice to competitive athlete, can benefit from 3D gait analysis. The Amazing Benefits of 3D Gait Analysis. For the novice, gait analysis and retraining can help establish optimal muscle recruitment and biomechanical patterns, to optimize enjoyment of running and reduce your risk of injury. Seasoned runners can benefit from a tune-up to eliminate bad habits and compensation patterns, to enhance performance and avoid injury.


High measurement accuracy
High measurement accuracy

Data gathered from 3D gait analysis quantifies and measures functional limitations, faulty mechanics, imbalances and compensation patterns that are invisible to the naked eye.

Flexible retraining programs
Flexible retraining programs

Our 3D system allows us to customize running retraining programs in ways that could not be achieved with 2D analysis. 2D vs 3D Walking and Running Gait Analysis

Accurate pain detection
Accurate pain detection

Pain often surfaces at the site of compensation, where force loads are redistributed to make up for injuries or imbalances.

Accurate identification of underlying causes
Accurate identification of underlying causes

Gait analysis data helps us distinguish compensation patterns from their underlying cause, so we can correct the deficit at its source.

High level technology
High level technology

NYDN Rehab features the most advanced running and motion analysis technology in NYC. Our sports medicine specialists combine experience and expertise with sophisticated technology and software, to test, analyze and retrain running gait.


Follow-up appointment with an exercise physiologist to fine-tune retraining exercises and real-time running cues
Reevaluation to gauge progress and receive recommendations for further improvement
Dr. Lev Kalika
Dr. Lev Kalika

Clinical director & DC RMSK

Dr. Kalika’s experience comes from working with Prof. Pavel Kolar the renowned Czech School of Rehabilitation as well as Prof. Christopher Powers who is one of the worlds leader in treatment and prevention of running injuries.

Another unique approach that Dr.Kalika is certified in is ISM (integrated system model) therapy.This approach is now used by most elite EPL soccer teams (Manchester city and Chelsea) to keep their players away from injuries as well as for in season rehabilitation. Dr. Kalika has knowledge not only in several different types of therapy he also has expertise with diagnostic ultrasound, gait and running analysis, orthopedics, and sports medicine.

The combination of all these different experiences helps him correctly diagnose and rehabilitate athletes better than most clinics in NYC.

Dr. Kalika has also studied under top leading running authorities like Brian Hidershide and Irene Davis. These experiences and extra training has given Dr. Kalika the unique expertise in running performance.

Dr. Lev Kalika

Despite 10 years of experience with instrumented gait analysis, attending multiple running medicine conferences, certification in clinical biomechanics, and personal experience with Chris Powers, I decided to undertake this additional certification to ensure that no single detail concerning the assessment and treatment of running injuries escapes me.


Our achievements

NYDNRehab has the most technologically advanced motion analysis lab in NYC.
Runners Magazine has marked NYDNRehab as a leader in the field on East Coast.

Range of Available Unique Physical Therapy Treatments at Nydnrehab




The test is used in to zoom in on stability of the knee, and ankle beyond the capabilities of gait analysis technology in the orthopedic and sports medicine disorders such as ACL and meniscus tear, ankle instability, running disorders and other sports related trauma.


Ibra Morales thirty time nyc marathon participant
Ibra Morales thirty time nyc marathon participant

Dr. Kalika, I just want to thank you and your incredible team for helping me recover and run the NYC marathon for the 30th time this coming Nov. 7th. As you can see in the attached poster, the NYRRC had selected me as one of the runners in this year’s marketing campaign. When I got injured in June and visited various Dr. with no improvement , I was referred to you. When I came in, I could hardly walk, never mind running. Now I’m ready to tackle the NYC marathon for the 30th time! Thanks to Nick, Gregg, Sunny and Anna!! Your team is great and thanks to “your incredible personal attention” to my injuries! I’m ready!!

Professional associations and memberships

Dr. Kalika is currently a certified member of:


American Institute of Ultrasound Medicine


Active member of ISMST

International Society of Extra Corporeal Shockwave Therapy


Active member of GCMAS

Gait and Clinical Movement Analysis Society


Active member of NASS

North American Spine Society


Active member of IADMS

International Association of Dance Medicine and Science


Active member of Virtual Rehabilitation Society


Active member of ASRA

American Society of Regional Anesthesia and Pain Medicine


American Academy

Association of Orthopedic Medicine

Lev Kalika Clinical Director and DC, RMSK

Dr.Kalika has revolutionized running injury care and treatment by using high resolution diagnostic ultrasonography for structural diagnosis, combined with gait and motion analysis technology. The NYDNRehab motion and gait analysis lab is the only private lab in the US to feature research-grade technologies found only in the world’s top research labs, and made available to patients in our private clinic. Dr.Kalika’s modern approach to athletic and running injuries has put him on the radar of some of the world’s top distance runners, pro athletes and professional ballet dancers.

Our Specialists

Dr. Mikhail Bernshteyn MD (Internist)
Dr. Michael Goynatsky DPT
Dr. Daniela Escudero DPT
Dr. Michelle Agyakwah DC
Dr. Tatyana Kapustina L. Ac.

In this instance, an athlete was originally diagnosed with minor quadriceps muscle strain and was treated for four weeks, with unsatisfactory results. When he came to our clinic, the muscle was not healing, and the patients’ muscle tissue had already begun to atrophy.

Upon examination using MSUS, we discovered that he had a full muscle thickness tear that had been overlooked by his previous provider. To mitigate damage and promote healing, surgery should have been performed immediately after the injury occurred. Because of misdiagnosis and inappropriate treatment, the patient now has permanent damage that cannot be corrected.

The most important advantage of Ultrasound over MRI imaging is its ability to zero in on the symptomatic region and obtain imaging, with active participation and feedback from the patient. Using dynamic MSUS, we can see what happens when patients contract their muscles, something that cannot be done with MRI. From a diagnostic perspective, this interaction is invaluable.

Dynamic ultrasonography examination demonstrating
the full thickness tear and already occurring muscle atrophy
due to misdiagnosis and not referring the patient
to proper diagnostic workup

Demonstration of how very small muscle defect is made and revealed
to be a complete tear with muscle contraction
under diagnostic sonography (not possible with MRI)


Complete tear of rectus femoris
with large hematoma (blood)


Separation of muscle ends due to tear elicited
on dynamic sonography examination

Buy now 3D Gait
Payment Success
Request TelehealthRequest Telehealth Request in office visit Book now