Spinal Fusion in The US: 1998 - 2008

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Spinal Fusion in the United States
Analysis of Trends From 1998 to 2008

Sean S. Rajaee, MS; Hyun W. Bae, MD; Linda E.A. Kanim, MA; Rick B. Delamarter, MD
Posted: 01/20/2012; Spine. 2012;37(1):67-76. © 2012 Lippincott Williams & Wilkins
Abstract and Introduction

Abstract

Study Design. Epidemiological study using national administrative data.
Objective. To provide a complete analysis of national trends in spinal fusion from 1998 to 2008 and compare with trends in laminectomy, hip replacement, knee arthroplasty, percutaneous transluminal coronary angioplasty, and coronary artery bypass graft.

Summary of Background Data. Previous studies have reported a rapid increase in volume of spinal fusions in the United States prior to 2001, but limited reports exist beyond this point, analyzing all spinal fusion procedures collectively.
Methods. Data were obtained from the Healthcare Cost and Utilization Project Nationwide Inpatient Sample for the years 1998 to 2008. Discharges were identified using Inter national Classification of Diseases, Ninth Revision, Clinical Modification procedure codes for the following procedures: spinal fusion, laminectomy, hip replacement, knee arthroplasty, percutaneous transluminal coronary angioplasty, and coronary artery bypass graft. Population-based utilization rates were calculated from the US census data.

Results. Between 1998 and 2008, the annual number of spinal fusion discharges increased 2.4-fold (137%) from 174,223 to 413,171 (P < 0.001). In contrast, during the same time period, laminectomy, hip replacement, knee arthroplasty, and percutaneous coronary angioplasty yielded relative increases of only 11.3%, 49.1%, 126.8%, and 38.8% in discharges, while coronary artery bypass graft experienced a decrease of 40.1%. Between 1998 and 2008, mean age for spinal fusion increased from 48.8 to 54.2 years (P < 0.001), in-hospital mortality rate decreased from 0.29% to 0.25% (P < 0.01), and mean total hospital charges associated with spinal fusion increased 3.3-fold (P < 0.001). The national bill for spinal fusion increased 7.9-fold (P < 0.001).

Conclusion. Frequency, utilization, and hospital charges of spinal fusion have increased at a higher rate than other notable inpatient procedures, as seen in this study from 1998 to 2008. In addition, patient demographics and hospital characteristics changed significantly; in particular, whereas the average age for spinal fusion increased, the inhospital mortality rate decreased.

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And some other good data to have, given the stats from the previous abstract in the original post:

Long-term Outcomes of Lumbar Fusion Among Workers’ Compensation Subjects: A Historical Cohort Study

Nguyen, Trang H. MD, PhD*; Randolph, David C. MD, MPH*; Talmage, James MD†; Succop, Paul PhD*; Travis, Russell MD‡






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Abstract



Study Design. Historical cohort study.


Objective. To determine objective outcomes of return to work (RTW), permanent disability, postsurgical compli*cations, opiate utilization, and reoperation status for chronic low back pain subjects with lumbar fusion. Sim*ilarly, RTW status, permanent disability, and opiate utili*zation were also measured for nonsurgical controls.


Summary of Background Data. A historical cohort study of workers’ compensation (WC) subjects with lum*bar arthrodesis and randomly selected controls to evalu*ate multiple objective outcomes has not been previously published.


Methods. A total of 725 lumbar fusion cases were compared to 725 controls who were randomly selected from a pool of WC subjects with chronic low back pain diagnoses with dates of injury between January 1, 1999 and December 31, 2001. The study ended on January 31, 2006. Main outcomes were reported as RTW status 2 years after the date of injury (for controls) or 2 years after date of surgery (for cases). Disability, reoperations, complications, opioid usage, and deaths were also deter*mined.


Results. Two years after fusion surgery, 26% (n = 188) of fusion cases had RTW, while 67% (n = 483) of nonsur*gical controls had RTW (P &#8804; 0.001) within 2 years from the date of injury. The reoperation rate was 27% (n = 194) for surgical patients. Of the lumbar fusion subjects, 36% (n = 264) had complications. Permanent disability rates were 11% (n = 82) for cases and 2% (n = 11) for nonoperative controls (P &#8804; 0.001). Seventeen surgical patients and 11 controls died by the end of the study (P = 0.26). For lumbar fusion subjects, daily opioid use increased 41% after surgery, with 76% (n = 550) of cases continuing opioid use after surgery. Total number of days off work was more prolonged for cases compared to controls, 1140 and 316 days, respectively (P < 0.001). Final multi*variate, logistic regression analysis indicated the number of days off before surgery odds ratio [OR], 0.94 (95% confidence interval [CI], 0.92–0.97); legal representation OR, 3.43 (95% CI, 1.58–7.41); daily morphine usage OR, 0.83 (95% CI, 0.71–0.98); reoperation OR, 0.42 (95% CI, 0.26–0.69); and complications OR, 0.25 (95% CI, 0.07–0.90), are significant predictors of RTW for lumbar fusion patients.


Conclusion. This Lumbar fusion for the diagnoses of disc degeneration, disc herniation, and/or radiculopathy in a WC setting is associated with significant increase in disabil*ity, opiate use, prolonged work loss, and poor RTW status.
 
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what about lumbar fusion for lumbar scoliosis?? is there any data on that? i'm mainly interested because many of my patients do have a lumbar scoliosis, female, aged between 20-40yrs and curvatures starting from 30 degrees.......would be interested to see the data on that group.
 
Found this letter to Editor by a orthopod in JBJS. Posting here in hope that his message will resonate to people in our field too.

TO THE EDITOR:
I had an opportunity to meet Dr. Sarmiento during some of the SICOT meetings. I have read practically every article that he has written because I have always found wisdom in his statements, which is so important when one is managing a large number of patients in a developing country that has limited material resources and specialized centers. In general, Dr. Sarmiento's thoughts correspond with the philosophy that I have been preaching, practicing, and promoting to my students and to society at large. I have often wondered how the thoughts and philosophies of two orthopaedists working in totally different environments could be so similar. While reading "Commentary. Responding to Change" (80-A: 601-603, April 1998), by Sarmiento, I got the impression that, if the primary goal is to promote the welfare of the patient by employing the clinical art of orthopaedics, with minimum or only essential operative procedures being performed in the interest of cost-effectiveness, the basic treatment philosophies that emerge would be almost the same. Most of my students, if they were to read Dr. Sarmiento's Commentary, would be happy and satisfied to know that I am not alone in my philosophy of teaching and training in orthopaedics.
Orthopaedic surgeons are best trained to develop the philosophy of treatment of all ailments or injuries of the locomotor system. It should be the surgeon's decision or prerogative to seek the help of other specialists for conditions that may require microvascular techniques or the transfer of free vascularized tissues. Unfortunately, sometimes the patient or his or her guardians are taught to ask the attending orthopaedic surgeon who is treating a fracture of an extremity to call a plastic surgeon to stitch an uncomplicated facial wound or a neurosurgeon to repair a damaged peripheral nerve. Having treated all varieties of spinal diseases over the last forty years (until 1995, when I began private professional work), I am now aware that the attendant or the patient often suggests or demands that a neurosurgeon be involved during the operative treatment of paraplegia due to tuberculosis or during the operative treatment of a disc herniation. One wonders who educates such patients; is it weekend subspecialists or the orthopaedic surgeons themselves? I have seen orthopaedic surgeons refer patients who have a fracture of the spine to a neurosurgeon!
The current generation of orthopaedic surgeons frequently relies on instrumentation and technology for the treatment of even simple orthopaedic problems. One possible reason for this tendency is the societal recognition or financial rewards, or both, that are available when an orthopaedic surgeon chooses an operative technique. Nonoperative techniques that rely on biological processes for the healing of many simple orthopaedic problems, such as tendinitis, fibrositis, sprained joints, low-back pain, and closed fractures of the limbs, are often neglected because they are nonexhibitionistic and do not convey as much financial reward as interventional methods do. Many of the newer generation of orthopaedists consider treatment with plaster outmoded and beneath their dignity. I have seen nameplates at some clinics that say "Dr. XYZ, International Orthopaedic Surgeon, Fractures Here Are Treated without Plaster." Have the teachers, senior peers, or articles in orthopaedic journals failed? I have always wondered how a large number of rare procedures can be performed for the treatment of rare clinical entities and how sufficient data on such procedures can be collected, analyzed, and published in the international literature. I understand, from Dr. Sarmiento's Commentary, that a surgeon must perform a certain number of related procedures in order to be entitled to membership in a prestigious subspecialty society, such as those related to the hand or to orthopaedic oncology.
I am in no position to comment on the wisdom of the rules imposed by these prestigious societies; however, the emphasis on such rare procedures, which are of questionable benefit when compared with simpler, time-tested methods, conveys an imbalanced message to the younger generations. I believe that the best procedures are those that can be performed by an average orthopaedic surgeon in a modest setting in any part of the world, with consistent results.
Nonoperative or semi-invasive treatment of fractures is an art that has been practiced and improved on by generations of orthopaedists. Where newer technologies are available, we should improve on this art of closed treatment (because there is no upper limit on art) rather than discard it.
All universities, teaching departments, and educators should ensure balanced teaching, training, and practice in order to produce general orthopaedic surgeons who can diagnose, treat, and guide the treatment of all injuries, defects, and diseases of the musculoskeletal system. Only after five years of active professional work after postgraduate training in orthopaedics should the general orthopaedic surgeon be encouraged or induced to choose an area of subspecialization depending on his or her work environment. Such a practice would ensure the cohesive nature of orthopaedic disciplines. Present students do not learn from sermons, which are hollow and in abundance all over the world. Trainers and peers have to set practical personal examples to induce the current generation to offer the best to the patients in a particular setting.
S. M. Tuli, M.S., Ph.D
 
And here is the article that above said letter is referring to:

The orthopaedic community is deeply concerned about the changes brought about by health-care reform. The primary concerns seem to be centered around the increasing loss of autonomy, the reduction in reimbursement for services provided, the overwhelming number of regulations that border on the irrational, and the perception that there are too many orthopaedists. The entire scenario almost seems to be designed to break the spirit of the medical profession in the hope that physicians, in frustration, eventually will accept a system of controlled National Health Insurance in which they are salaried employees.
While I do not question the legitimacy of those concerns, I believe that efforts to offset the real or perceived trends will be futile unless we acknowledge that we are, to some extent, willingly or unwillingly responsible for many of the problems that we now confront. I suspect that, unless we make a major effort to modify a number of deeply rooted attitudes and practices, we will lose the battle and, in the not-too-distant future, the discipline of orthopaedics will cease to exist.
Economic considerations prompted the government to initiate health-care reform. Organized medicine responded not by officially agreeing that the escalating cost of medical care was a problem that needed to be addressed, but by bemoaning the possible personal financial implications of the proposed plans. We assumed that our fortress was impenetrable and that the discipline was too well entrenched for anything of a draconian nature to happen to us. We refused to acknowledge that we may have played a role in the creation of the escalating cost of medical care, and we continued to indulge in practices that any observer could readily identify as contributing to the problem.
In clear and loud terms, we were told that specialty medicine was too expensive, that specialists relied too heavily on technology, and that too many operations were being performed. Rather than initiating a process to determine whether the charges were valid, we proceeded to indulge in an orgy of technology, to create more subspecialties within our profession, and to treat a greater number of conditions with more expensive operative means. All of these actions contributed to the problems that others were trying to address.
Our actions did not go unnoticed. When the fees for services were reduced, we responded by complaining about it and increasing the volume of our services. Many conditions that previously had been treated successfully with simple non-operative means began to be treated operatively instead. This pattern reached the educational institutions, and, within a very short time, new graduates from orthopaedic residency programs were completing their training with only a modicum of understanding and respect for non-operative approaches to diseases and injuries of the musculoskeletal system. Today, the diagnosis and treatment of musculoskeletal conditions nearly always involve the use of expensive technology. For example, tendinitis and bursitis demand not just a physical examination but magnetic resonance imaging as well. A sprained joint is thought to require, in addition to magnetic resonance imaging, an arthroscopic procedure followed by expensive and prolonged physical therapy. Low-back pain, even in the absence of a neurological deficit, is approached with a battery of costly tests followed, once again, by prolonged physical therapy. Although many graduates finish their residency seeming to know little about how to reduce a fracture and immobilize it in a cast, they do know how to insert an intramedullary nail, secure a plate, and apply an external fixator. In fact, I believe that many orthopaedic residents are being trained to be skeletal cosmetologists rather than physicians. An unjustified and unreasonable obsession with perfect anatomical restoration recently has dominated the minds of many, particularly in the field of fracture care. Inconsequential abnormalities are considered to be indications for operative treatment because of the fear of undocumented undesirable sequelae.
Some individuals in academic medicine suggest that orthopaedists should treat only fractures that necessitate an operation and leave the closed treatment of fractures to others. This, I believe, would be professional suicide. Once others become responsible for the non-operative care of fractures, they will instruct the orthopaedist as to which fractures are to be treated with operative means, rather than the other way around.
The emphasis on cost containment has given those outside our profession an opportunity to extend the scope of their disciplines. Today, the neurosurgeon not only performs stabilization procedures on the spine but is often the one who is identified by the medical profession and the public at large as the expert in that area. Similarly, the plastic surgeon is considered by many to be the true hand surgeon, and his or her presence in the orthopaedic operating room is thought to be essential for the care of patients who have a fracture associated with soft-tissue damage. Pediatricians and family physicians treat so-called simple fractures with increasing frequency. Podiatrists now consider the operative treatment of tibial fractures to be part of their armamentarium. Third-party payers welcome the involvement of non-orthopaedists because of the perception that it generally reduces the cost of care.
Thus, the field of orthopaedics has become an attractive prey; it has been easy for others to move in and capture a large portion of our territory. I suspect that other practitioners no longer view orthopaedics as a comprehensive body of knowledge that requires long and rigorous training but rather consider it simply as a series of operative procedures that anyone with surgical skills can readily master. Having reasoned in that manner, these other practitioners only needed to request instructions on how to use the instrumentation from the orthopaedic manufacturing companies. Industry saw a new market opportunity and readily accommodated their desires.
To complicate matters, orthopaedists became infatuated with subspecialization and the prestige that subspecialty societies offered. New and often superfluous societies were established for many specific bones and joints as well as for several operative techniques and diseases. I believe that the large number of operations required for membership in some societies can be an inducement to perform unnecessary procedures. Many of these societies publish their own journals and hold educational meetings in isolation from the rest of the profession. They also established lobbying offices in Washington in the hope of gaining a direct and more effective voice in the halls of Congress. In doing so, they have weakened the cohesiveness of our profession.
Some twenty-five years ago, academicians began, with the best of intentions, to structure orthopaedic departments to fit the subspecialty trend. Educational institutions recruited faculty who limited their practices to smaller and smaller areas of the body. As the faculty had to be accommodated with residents, rotations through the various sections became shorter and shorter.
Soon thereafter, fellowships began to receive greater emphasis, and it did not take long for them to become status symbols. Most residents completed a fellowship, regardless of whether or not they needed additional education. However, in the current health-care environment, many physicians never have the opportunity to practice in the area in which they have received additional training. Managed care and government regulations now discourage rather than encourage referrals to specialists.
To identify problems without offering answers is unwise. Therefore, I will present some possible solutions. I recognize that most will be difficult to implement because of existing practices and long-held beliefs, inherent conflicts of interest, and the natural inclination to accept the status quo.
I suggest that the current system of resident rotations through every subspecialty be replaced with a system that encourages greater exposure to general orthopaedics throughout the entire training program. In that manner, the resident would feel comfortable managing the operative and non-operative aspects of orthopaedics on the completion of training. The frustration and insecurity that short rotations generate would be assuaged. Rotations that are limited to one specific area, such as pediatric orthopaedics, could be preserved, whereas those that focus on more esoteric and highly specialized areas, such as scoliosis and oncology, could be deemphasized.
One could argue that a structured exposure to subspecialties is imperative because of the explosion of knowledge and technology during the last few decades. My answer to this argument is that, to a large extent, the body of knowledge in orthopaedics is not necessarily greater. Instead, new knowledge has replaced old knowledge. Other professions and trades have clearly demonstrated that point.
I also suggest that orthopaedic postgraduate fellowships be deemphasized. Such fellowships should be offered only to those who truly need additional education, either because of deficiencies in the program that they completed or because they have a clear interest, and hope to carry out future research, in one particular subdiscipline. Additional criteria could be established as well. In my opinion, there is little doubt that five years of training in a well balanced program provides the orthopaedic resident with sufficient education to practice good orthopaedics in the operative and non-operative arenas.
The Council of Musculoskeletal Specialty Societies (COMSS) could help to accomplish these goals by restructuring itself in a manner that would preserve the existence of groups that focus on specific areas of orthopaedics while eliminating the perceived elitist nature of the system as it is today. The existing barriers to membership in subspecialty societies should be lowered, and unreasonably restrictive criteria should be eliminated. It is not necessary to issue certificates of membership or certificates of additional competency. The field of orthopaedics has a well structured mechanism to ensure that its members are competent to practice in all areas of the discipline. The rigorous and extensive period of education along with board certification and recertification should suffice. There is no evidence that the addition of new, artificial barriers has enhanced the quality of care.
The composition of the Board of Directors of The American Academy of Orthopaedic Surgeons also should reflect the proposed new philosophy. This goal can be achieved by having all Board members elected by the fellowship. At this time, there are a number of appointed representatives on the Board. Such preferential treatment sends a message to the orthopaedic community that there are some individuals who, for reasons of subspecialization or positions held in certain societies, belong to a higher level in the hierarchy of the profession. This unhealthy perception should be dispelled.
The American Academy of Orthopaedic Surgeons could set a good example by changing its name to The American Academy of Orthopaedics. Such a move would deemphasize the operative aspect of the discipline and would indicate to the public that members of The Academy have been educated to provide the best non-operative as well as the best operative treatment of conditions of the musculoskeletal system. To my knowledge, no one has ever questioned the competence of urologists, ophthalmologists, and others regarding their operative and non-operative expertise. The names of their Academies do not include the word surgeons. Ours should not either.
A major step in paving the way to success would be for the body of orthopaedists to carefully assess its relationship with industry. Our organizations must make it clear that the postgraduate education of orthopaedists should be determined and controlled by the profession itself. This can and should be done without belittling the important role that industry has played, and should continue to play, in the development of the specialty.
We must agree that the cost of orthopaedic care is high and reject the argument that, because this country is very wealthy, it does not matter whether the health-care component of the national budget is 8, 10, or 20 per cent. The medical profession is an important component of society, and it is obligated to use its privileges and to discharge its responsibilities in the most prudent manner. To claim that we should be free to spend as much as we want is not a good argument. We should be allowed to spend as much as is necessary, provided that the approach is unselfish, reasonable, and objective. Society cannot, and should not, tolerate abuse simply because there is money to pay for it.
I sincerely believe that these issues should greatly concern us and suspect that, unless current trends are tempered or modified, our specialty will be in serious danger of ceasing to exist.
I will accept criticism for this commentary if criticism is to come. My ideas on these issues are the product of the careful observation and study of my profession during my long tenure in the practice of orthopaedics, in education as well as in research and medical administration.
Augusto Sarmiento, M.D.
 
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