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08/05/2021 Kevin A. Kirby, DPM
Why are Podiatry School Graduates Not Grasping Biomechanics
Dr. Jarrod Shapiro’s recent article, “Why Are Podiatry School Graduates Not Grasping Biomechanics?”, hits the nail squarely on the head. In the 36 years that I have been in private practice and teaching foot and lower extremity biomechanics both nationally and internationally, 28 of those years involved training podiatric surgical residents on the principles of foot and lower extremity biomechanics, foot and ankle surgical biomechanics, sports medicine, and foot orthosis therapy. As Dr. Shapiro also observed, I have noted a gradual decline in the biomechanics knowledge that these third-year podiatric surgical residents possessed when rotating through my office over the past 10-15 years. As such, I believe a few comments are in order about “biomechanics”, what it means, and what we, as a profession,should do about teaching “biomechanics” to our podiatry students, podiatric surgical residents and podiatrists.
First of all, we must all understand that the term “biomechanics” does not simply mean evaluating, casting/scanning, prescribing and adjusting orthotics. Rather, to any non-podiatric scientist, the term “biomechanics” refers to the examination of the forces acting upon and within any biological structure and the effects produced by these forces. In other words, “biomechanics” does not just mean “orthotics”.
Therefore, when a podiatrist surgically repairs the plantar plate of the second metatarsophalangeal joint to reestablish better digital purchase and reduce the pain within the plantar metatarsophalangeal joint, that podiatrist is “doing biomechanics”. When a podiatric surgeon performs a Lapidus bunionectomy, that podiatrist is “doing biomechanics”. When a podiatric surgeon performs a posterior calcaneal medial displacement osteotomy for adult acquired flatfoot deformity to reposition the posterior calcaneus more medially so that ground reaction force and Achilles’ tendon tension forces produce more supination moment across the subtalar joint axis, then, by definition, that surgeon is also “doing biomechanics”.
In fact, “doing biomechanics” is something that each and every one of us, as podiatrists, do every day of our clinical practice, even if we don’t cast or scan a patient for custom foot orthoses, and don’t grind or modify an orthosis. Why? Because the human foot is the most mechanically important and complex structure in order for us to be able to properly perform our daily activities – a structure that Leonardo DaVinci called, over five centuries ago, “a masterpiece of engineering and a work of art”.
The foot is the structure that is subjected to, by far, the largest magnitudes of external forces of any structure of the human body. Therefore, when we treat the foot in any way, the science that examines the force acting upon and within the foot and the effects produced by such forces on the foot (i.e. biomechanics), is involved. Every time a podiatrist places a pad inside a shoe, trims an offending toenail, shaves down a corn, debride and offload a diabetic ulcer, applies a low-Dye strapping, does an osteotomy, transects a ligament, lengthens or transfers a tendon, and/or do an arthrodesis, they are affecting the biomechanics of the foot.
That being said, with the scientific realization that the foot is an extremely important and inherently mechanical organ that we all rely on to function properly during our daily weightbearing activities, why is it that more hours are not devoted during podiatric medical school, podiatric surgical residencies to teaching the intricacies of foot and lower extremity biomechanics? Why are “podiatric surgical seminars” practically devoid of any discussion of foot and lower extremity function when the structure they are advocating performing surgery on is such an important and complex mechanical structure?
Put in other words, if one wanted to be trained as a professional who repairs and restores the function of any mechanical object, whether that machine was an automobile transmission, an electric motor, an air conditioner, or a foot, one would expect that a large part of the time spent in that professional training would be devoted to teaching how that machine worked. In that way, successful troubleshooting and repair of that machine could be maximized and temporary or permanent repair failures of that machine could be minimized. Unfortunately, over the past 10-15 years, we, as a profession, have been increasingly training technicians that are educated to perform many different types of surgeries on a mechanically complex part of the human machine but are not completely trained on the intricate biomechanical function of that machine that we know as the human foot.
What makes me say these things? Let’s look at a few examples. Why are podiatry students still being taught half-century-old notions in foot biomechanics, based on faulty research and speculation, that have been disproven by scientific research from decades ago? Why do lecturers at podiatric surgical seminars spend so much time showing pre- and post-operative static bone shadows (i.e. x-rays) and not show pre- and post-operative gait kinematic and kinetic studies to discover how their foot surgeries may have altered the dynamics of gait, rather than change the apparent static structure of the foot? Why do we continue to overemphasize all different types and colors of shiny surgical hardware and technologies for surgically repairing foot and ankle “deformities” in podiatry seminars and spend so little time emphasizing and researching how these surgical procedures affect the weightbearing function of the foot and lower extremity?
My belief is that for podiatry, as a profession, to truly achieve the goal of remaining as the premier surgical specialists of the foot, we first need to spend more time training our podiatry students, podiatric surgical residents and podiatrists in the biomechanical function of the foot and lower extremity. Whether we, as podiatrists, are “doing biomechanics” by performing foot and/or ankle surgery, are “doing biomechanics” by debriding and offloading diabetic foot ulcers, are “doing biomechanics” by performing a partial nail avulsion, or are “doing biomechanics” by making custom foot orthoses for our patients, we first need to understand, as a profession, that better biomechanical knowledge of the foot and lower extremity is not only important, but essential. In this way, we will better be able to achieve optimal conservative and/or surgical therapeutic results for our patients, while minimizing unwanted pain and disability within our patients as a result of our lack of better comprehension of foot and lower extremity biomechanics.
Kevin A. Kirby, DPM, Sacramento, CA
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08/17/2021 Robert D. Phillips, DPM
Why are Podiatry School Graduates Not Grasping Biomechanics
I am grateful and encouraged by the many so far who have responded to Dr. Shapiro's essay on the lack of biomechanics understanding by resident interviewees. While I agree with most of the points of the various responders, I would also like to consider a few additional points that may have contributed to the current hand-wringing..
1. When I entered podiatry school in 1976, prospective podiatry students were required to take an aptitude test to predict their success in podiatry school. Part of this test was a 3D visualization section. This part of the exam alerted students that part of the curriculum would involve being able to visualize geometric shapes and what happened when they were rotated. I'm not sure how many prospective students it might have scared away from going into podiatry, however, it did make a point of the aptitude needed to be a good podiatrist.
Somewhere along the way, podiatry schools decided that they needed to attract more of the medical school applicant pool. To make it easier to do so, they started accepting the MCAT, which had no section that pointed to the need to be able to visualize 3D objects rotating in space. As such, a number entered the profession with the idea that no mechanical and little mathematical knowledge was needed to practice podiatry. I have to say that there are a great many in the profession today who openly profess extreme math phobia. The idea that they might have to know what a sine or cosine is, or what an integral or differential is sends them into a state of high anxiety.
Yet basic mathematical skills are needed to read any of the dozen or so journals in biomechanics, where a majrity of the research is being published. So when we see that students and residents are not able to read the biomechanics journals, can we expect them to understand the nomenclature, lingo and keep up to date? One is hard pressed to find an American podiatrist participating in conferences of organizations such as the American Society of Biomechanics and the international Foot and Ankle Biomechanics organization is most appalling.
It is important to realize that biomechanics is not a clinical science, but actually a basic science that governs all animal movements, from microbes to blue whales. It governs principles of cardiac output and blood pressure. It governs the stability of being able to stand and to walk. It should be part of the basic science, not part of the clinical science part of the curriculum. While it impractical to go back to discontinue using the MCAT in favor of a podiatry college aptitude test, it is possible to improve the prerequisites for admittance to a podiatry college. My recommendation is that an undergraduate course in biomechanics should be a prerequisite for entrance into any college of podiatry today.
We also need to strengthen the prerequisites in mathematical skills, with at least 1 semester of calculus being the minimum, with preference to at least 2 semesters and one additional semester in another mathematical course at the 200 level. With better skills our abilities to read the research being published increase and we can better communicate interprofessionally and participate in interprofessional research and symposiums.
2. A great many of practitioners today attended traditional podiatry schools which were divided into 3 basic departments, medicine, surgery and biomechanics. While this may have been a way of trying to better teach students and administer the college, the end result has been disastrous in that it has created and fostered the idea that one either practices biomechanics or one practices surgery. Even in the discussions of this thread I see uses of phrases that indicate people still believe that biomechanics is a nonsurgical way of treating orthopedic deformities.
In the traditional school model, the people in surgery departments basically didn't do biomechanical examinations and people in biomechanics departments didn't do surgery. To the best of my knowledge, Dr. Leonard Levy pioneered at Des Moines University the move away from making surgery and biomechanics different departments. With no departments, professors there were asked to teach something in any course that affected clinical practice of podiatry. This model seems to have been furthered as other podiatry schools have become just part of larger medical schools. Unfortunately, some may interpret the lack of an actual "biomechanics" department at a school as a statement that students don't need to know biomechanics rather than a statement that biomechanics is part of almost everything a podiatrist does. Hopefully in a de-departmentalized podiatry college, biomechanics will be taught by all the podiatric faculty, including those who specialize in surgical approaches and by those who specialize in conservative approaches.
3. There continues a continued push to decrease biomechanics teaching at the residency level. When ABPM and ABFAS agreed that there should be a single podiatry residency training model, ABPM dropped its MAV for biomechanical exams from 150 to 75 over the 3 years of training. Now, a recent proposal in the rewrite for the new CPME 320 document shows that MAVs for biomechanical exams would be decreased from 75 minimum to 50 minimum. When I pushed the head of the ad hoc rewrite committee on this decision, the only answer was that it came from the opinions of the "community of interest." It was argued that many programs were having problems meeting the 75 number. This points to a problem that we continue to avoid addressing -- we continue to push residency as a way of turning out highly competent surgical technicians instead of physicians who know how to follow a patient from entering the system until there is resolution of the problem. Part of the evaluation of the patient includes an assessment of function and causes of abnormal function. Dr. Jeff Robbins has recently suggested that such an assessment should be renamed "the pathomechanical exam." I agree totally with this suggested change in terminology. I have found that in only a few select programs is biomechanical examination pushed as the path to good surgical decision making. How is it that we can say that it takes a minimum of 80 digital surgical procedures to make one competent to perform the needed procedures, but only 50 biomechanical exams are needed? One program that I am aware of pushing more biomechanical evaluations than the minimum of 75 is that headed by Dr. Shapiro, who requires his residents to perform a minimum of 150 examinations as part of their training. If biomechanics is the foundation upon which all musculoskeletal procedures are based, how can one justify asking a resident to perform a surgical procedure without doing the examination before? I noted recently one program where residents were being required to do all the pre-op H&Ps, yet few of these included a good biomechanical exam. Maybe it was because the H&Ps were being done in the last few minutes before the patient was rolled into the OR. Good biomechanical examinations require time and also they require thought about how findings answer the question of why surgery is needed and what the result will be after surgery. The director of medical education at our local VA hospital recently told me that ACGME approved programs are de- emphasizing the work load and instead are more emphasizing the evaluation and thought process that leads to making diagnosis and treatment decisions. Is that also a goal of the new CPME 320 document?
4. I can point in each school to specific instructors who are committed to biomechanics teaching, however their time is so taken up between preparing and giving lectures, remediation, writing and grading tests, clinical work and committee assignments that few have a moment to spend in doing the research and writing the articles that are needed to improve biomechanics knowledge and applications. A few of the schools do have a biomechanics laboratory, some of them better equipped than others for doing research. One school has an extremely well developed lab that has received a significant number of grants to do research, however it is the exception and not the rule. Overall, how much importance does each school put on biomechanical research and publishing in the podiatry journals? I do know that a majority of the biomechanics research papers submitted to JAPMA come from outside the United States, and a majority of the reviewers of biomechanics papers are also outside the United States. If students are coming out of the schools, knowing more about the technique of repairing an ankle fracture than about how to evaluate a patient for flatfoot surgery or unable to decide whether a Richie brace or a shoe modification is the best for the patient, then it is not the fault of those charged at the schools with teaching biomechanics, but instead is a measure of the goals of the institutional heads themselves? How can biomechanics research and publishing be rewarded? Why has the number of new biomechanics texts produced by podiatrists since Root's 1977 book be counted on just a few fingers? One of the very big biomechanics labs in the country is at the Hospital for Special Surgery, an institution famous for its orthopedic surgery. Which of the podiatry schools can compare itself to that biomechanics lab? The board members at the schools need to readdress their missions in fostering biomechanics knowledge and research.
4. In the 1970s, almost all podiatrists made their own orthotics for their patients. If one wants to learn a lot of biomechanical principles, make a device to put on the patient and have them wear it and report back on whether or not it is working -- then, it if it's not working, fix it. Today almost no podiatric graduate has any idea about the process of making an orthotic or brace or what goes into the design of it. We have turned almost all the design and fabrication over to "professional orthotic companies" with trained pedorthists and prosthetists. So many podiatrists, then, act as only the middleman in the conservative biomechanics chain of custody.
For many years, many taught that there was only one biomechanics rule, "Take a neutral cast." Now, many clinicians don't even take the cast. I remember Dr. John Weed explaining that he felt that taking a good neutral cast was more difficult to do than good hammertoe surgery. So many physicians today write a two or three work prescription to their orthotists to just make orthotics for their patients with no instructions on how to take the cast nor any instructions on how to make the orthotic. Many clinicians find that if the first pair of orthotics don't work, they don't fix the problem, they just send the orthotic back to the lab or send that patient back to the orthotist, or they just say that orthotics didn't work and recommend that the patient needs surgery. How many podiatrists keep track of whether their orthotics and braces that they prescribed are still being worn by their patients 1 year later?
How many patients have come to see me with a whole bag of orthotics that didn't work, with no one trying to find out why the previous doctor's prescription didn't work? How many of these people have been amazed to have me lie them on their stomach and pull a measuring instrument out of my drawer? If we are going to prescribe orthotics, we've got to do more measuring and actual prescribing.
5. The prejudices against podiatry continues to dwindle, yet many are still institutionally there. The fact that the AMA owns the CPT codes that every insurance company uses and every government agency uses continues to amaze me. While additional HCPCs codes have been added by the government, the coding system used by the government are still a myriad of confusion to understand and bill correctly. The fact that people have had difficulty being paid for the time doing a good pathomechanical exam of the lower extremity has been frustrating for many well- meaning practitioners. Let's hope that new guidelines for billing time spent into the E&M coding system will help many practitioners spend the time needed to better understand why their patients are suffering injury and deformity.
Many of the prejudices were very early broken down by those who did do surgery -- by putting on surgical scrubs, they were better identified by the public as being real doctors. Because many podiatrists had their own office surgical suites, hospital administrators saw podiatrists doing surgery in their own facilities as major cash lost, and so they made sure that that cash was redirected into their hospital system. On the other hand, arch supports are being sold in every marketing corner possible, from TV advertisements to pharmacies to department stores that will 3D print your orthotics while your shop, to mall kiosks, etc. -- all of them claiming to be biomechanically sound, and few using little to any technology and none using hands on examination. So if a podiatrist isn't doing surgery, can he/she be considered a real doctor? Only the mature podiatrist can feel secure in his/her self-image as a physician if he/she isn't in the operating room. While some of the big CME programs do feature some very good biomechanics lectures and speakers, many of these lectures are poorly attended, especially by the young practitioners. Currently, there is only one American podiatric conference that is devoted purely to biomechanics thoughts.
As I noted, there are many reasons, some of them deeply rooted in tradition and history, that have brought us to the concern that today's graduates may not understand biomechanics. I welcome this invigorating discussion as everyone concerned puts their energies into solving the problem to see podiatry take the lead again in foot and lower extremity biomechanics.
Robert D. Phillips, DPM, Orlando, FL
08/11/2021 Dennis Shavelson, DPM, CPed
Why are Podiatry School Graduates Not Grasping Biomechanics (Richard A. Simmons, DPM)
Over the past 15-20 years, DPMs have focused on foot surgery focusing on improving the bio- architecture of our patients. Our surgeries alter pedal structure more optimally allowing the patient to then be engineered more optimally. Our interventions do not fix gait, sports performance, or living our lives more optimally and efficiently, they only make us, on a case to case basis, more fixable.
Improving the stability, support, strength, symmetry and balance of our feet via podiatric foot surgery allows Wolff’s and Davis’ laws to seamlessly adapt to the many changing influences we encounter on a daily basis. That is a great and valuable contribution to society.
When it comes to human stance and movement, there are three platforms that need to be controlled and maintained. These are the structural, functional, and performance platforms of human movement. Each has a longitudinal history of research, evidence and clinical applications. Rarely and at great sacrifice can one clinician or researcher study and practice all three.
This means that the combination of a human movement oriented diagnostician and clinician, a human movement-oriented foot and ankle surgeon and a human movement therapist, coach and/or trainer combining professionally are necessary when approaching human stance and movement.
In my opinion, the well-trained and practiced podiatric foot surgeon sits atop of the pyramid of those performing, rehabilitating and monitoring human movement foot and ankle surgery utilizing bio-architectural and biomechanical principles and methodology. We are appropriately marching together to fill the void that exists in Medicine when it comes to human movement. We are not trying to be engineers or therapists to the extent that our DPM ancestors and pioneers. We are leaving that to others and them.
Unfortunately, there are those who fail to realize that in order to fill our brains, skills, practice and experience as great human movement foot surgeons, we have reduced the energy we put into our expertise, practice and experience as great human movement diagnosticians, clinicians and therapists and in order to eventually deserve the title of MD/DPMs in Medicine. https://www.researchgate.net/publication/325812221_ A_Biomechanical_Paradigm_Shift_Part_I_Transforming_ Lower_Extremity_Biomechanics_Terminology_Nomenclatu re_and_Science_as_an_Upgrade_to_STJ_Neutral_and_Nor mal_Biomechanics
Dennis Shavelson, DPM, CPed, Tampa, FL
08/10/2021 Paul Kesselman, DPM
Why are Podiatry School Graduates Not Grasping Biomechanics (Kevin A. Kirby, DPM)
Two years ago at the APMA 2019 National, Karen Langone, Jeffery Ross and I provided a morning session on 21st Century Biomechanics. Not more than 75 DPMs attended that session with most being over the age of 45. Few young podiatrists attended this while other surgical courses were being offered. During the intervening two years, I have posted a similar LTE as Drs. Ritchie and Kirby, and have met with Dr. Shapiro, whose recent article has spurred this most recent conversation. Two years ago, rather than receiving letters of support on actions by which to resolve the issue, I received several letters from academia, defending the courses they taught at their various podiatric institutions, rather than acknowledgement that there was an issue. Several orthotic laboratories did however acknowledge the "problem".
Dr. Kirby's recent LTE is spot on and is identical to what I was taught over 40 years ago while a student at ICPM.
Unfortunately, the current students today lose much of what they are taught from the biomechanical perspective because it is lost by the time they graduate or after their first year of residency. My initial experience as an attending in residency programs, required that the resident complete a biomechanical exam on every elective surgical patient. That (and correct me if I am wrong) is most often no longer the rule.
Dr. Kirby's LTE along with others, screams of the need for a multi-faceted approach in order to fix this problem. The time on this is ticking as other professions in the past five years have presented far more research papers than I have seen either in the podiatry literature space or at meetings. Research along with evidence-based medicine either proving or disproving podiatric theories will either support or bury us. Owning this research and having the academic capable students and residents is more needed now than ever.
Dr. Shapiro and I have met several times either in person or via Zoom over the past two years and have begun our own "think tank" on how to right the ship and fix this problem. At this point we both know it will require lots of logistics and financial resources from a myriad of sources.
What is needed now is a focus on the future and not a defensive posture on what you or your institution has done. Obviously whatever has been done has been insufficient. We need visionaries, fellowships, research centers and those who have ideas on how to move this discussion in the correct direction.
I applaud all who have written in who have acknowledged the problem and are willing to address it in a positive direction.
Paul Kesselman, DPM, Woodside, NY
08/06/2021 Gregory T. Amarantos, DPM
Why are Podiatry School Graduates Not Grasping Biomechanics (Richard A. Simmons, DPM)
I understand Dr. Simmons' position and embrace biomechanics in my practice. I too and 65 years old and remember the "good old days' of more favorable reimbursement. There is no doubt medicine is a business and primary care physician provides a complete physical while I am in a hospital gown and minimally clothed. He also utilizes each CPT for counseling to his advantage and I do not begrudge him. I value the comprehensive care he provides.
Regarding the biomechanics vs. surgery discussion, I prefer to look at it through a different lens. I enjoy doing surgery and am satisfied when I achieve the desired outcomes. Oh, yes and doing surgery has a certain cache to it. Let’s look at 2 patients and the medical economics of the care provided. Patient A has a painful bunion and pronates, while patient B has fasciitis. Both get the initial visit code (99203) and radiographs (CPT 73630).
The bunion patient is scheduled for surgery and let us assume the CPT is 28296. The fee schedule is about $800 which includes the 90 day global period and let us assume 3 post op visits with x-rays (3x73630). For this, you will have to be at the hospital by 7:00 in the morning and if all goes well, be out by 8:30.
For my fasciitis patient, I can get to the office 5 minutes before the appointment, do the exam and I strap and pad the foot (29540). I will leave out night splint and injection fees for this discussion. I see the patient 1-2 weeks later (99213) and if there is improvement, I may advise orthotics. I believe because I taped the foot, the patient had tangible evidence they will get relief from orthotics, instead of "you need orthotics", because I know so. I do not have to sell the patient on the efficacy of orthotics for they perceived the value of the strapping. I do a biomechanical exam on the foot and I take the impression while utilizing the principles I was taught as a student. Let us assume the orthotic fee is $475 (self pay or insurance). The patient returns in 3 weeks to dispense the orthotics (99212-99213) and in one month for a follow up (99213).
As we digest the medical economics, please decide for yourself. Patient A: $125+ $65 x-ray+$65 x-ray with 3 additional charges of $65 for x-rays= $450+ $800=$1250. Patient B presents with $125+$65+$65+ 3 follow up visits 99213 $70+ orthotics $475=$940 minus the cost of the orthotics.
There is a $350 differential in the patient care and I opine that although surgery is glamorous, in a down economy elective surgery with the high deductibles is the first to take a back seat, while comprehensive, value based care can and continues to withstand the forces of medical economics.
According to the annual survey of podiatrists published by PM the past 30 years, my revenue has placed me in the upper echelon of the profession while my surgical income as a part of my entire revenue is approximately 10%. All the while having an excellent quality of life.
In my opinion there is a place for both in our profession, but it is not medical economics that have changed the dialogue. The educators have moved the cheese. Instead of focusing on surgery, they should provide a quality biomechanics course along with practice management lectures given buy successful practitioners. I am convinced if students saw the data, the emphasis on biomechanics would return. Gregory T. Amarantos, DPM, Chicago, IL.
08/06/2021 Richard A. Simmons, DPM
Why are Podiatry School Graduates Not Grasping Biomechanics (Doug Richie, DPM)
Dr. Richie, with all due respect, rather than change the topic of the question, please offer your opinion. I am simply offering my opinion. I believe medical economics and billable CPT codes are driving all aspects of medicine right now. I am 65 years old, and for the last ten years my annual physical exam with 5 different PCPs have all occurred with me fully clothed. I’m sure the reason why is that the medical group had to crunch numbers and interpret the CPT codes then determined that reviewing my clinical lab results and reading some snippet off of WebMD was “an annual physical exam.”
I am old enough to remember reimbursements of $300 for matrixectomies; now, it is less than half and barely more than a simple nail avulsion. I performed vascular exams for more than $200 each and simply stopped doing them because the money is not there.
There really is not a CPT for a biomechanical exam of the foot and ankle and we can only stretch the current codes so far. If you’re fortunate enough to live in a wealthy area like Long Beach, CA (Long Beach is estimated to be 146.6% of the national average making it one of the more expensive cities in the US), you may be fortunate to have a patient base who is willing to pay for services out of pocket(my city is 98.6%). Most young podiatrists are scrambling to get on insurance panels that dictate pretty much everything they can do, while at the same time are trying to figure out how to pay back tremendous student loans.
Do “I personally” think biomechanics is important, yes; but I also am a realist who sees that all of medicine is being driven by money and the least common denominator.
Richard A. Simmons, DPM, Rockledge, FL
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