Value-based Healthcare: The Challenge of Identifying and Addressing Low-value Interventions
Limiting the use of low-value interventions is one substantial contributor to value that is directly within the control of clinicians. These interventions, and the additional downstream unnecessary care they can generate, represent approximately 20% to 30% of the healthcare costs wasted on unnecessary care . But what constitutes a low-value intervention ? Should such interventions be defined by when the potential for harm exceeds the benefits ? When the intervention is not clinically effective and/or are not supported by current evidence ? Or when avoiding the procedure results in increased efficiency of care .
In her essay in the New England Journal of Medicine, Carrie Colla PhD  suggests that the identification of low-value interventions can be informed by a framework that includes net benefit, uncertainty of expected benefit, and cost. These characteristics should be considered in the context of available alternatives, including no treatment. Through this process, it is important to recognize that the principles of value-based healthcare require that benefits be assessed from the patient's perspective . Given these factors, the assessment of what constitutes a low-value intervention must be made using a collaborative and inclusive approach among physicians, while taking into account outcomes that are important to patients, variation in preferences between patients, alternative options for addressing patients’ health needs, and costs not only from a per capita basis, but also overall health system perspective. Ultimately, while some interventions may be of universally low-value, others may have a markedly different value profile across different patient groups or care delivery environments.
Several low-value interventions have been identified that are of particular relevance to orthopaedic surgeons. As part of the American Board of Internal Medicine's Choosing Wisely® campaign, the American Academy of Orthopaedic Surgeons recommended avoiding the following five low-value interventions: (1) splinting after carpal tunnel release, (2) lateral wedge insoles for medial knee osteoarthritis, (3) glucosamine and chondroitin for osteoarthritis of the knee, (4) needle lavage for knee osteoarthritis, and (5) routine deep vein ultrasonography following hip and knee replacement .
We could identify other consistently low-value interventions performed by orthopaedic surgeons including intra-articular viscosupplementation [4, 17, 22] and arthroscopic knee surgery in older patients with degenerative meniscal tears . Additional orthopaedic interventions such as lumbar decompression and fusion are potentially high-value for selected indications, but are also being used in an attempt to treat conditions where they provide low-value, such as low back pain . While less-commonly recommended by surgeons themselves, further low-value interventions such as imaging  for acute uncomplicated back pain and MRI of large joints with known degenerative disease , are frequently provided to patients who ultimately seek orthopaedic care.