September 2006   Volume XXXV No. 9
  2005 Annual Indexes
 
 
GUEST EDITORIAL

Artificial Disc Replacement: Progress or Hype?
Howard S. An, MD

Dr. An discusses the merits of disc replacement in relation to those of fusion.

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spine update

Advances in Osteobiologics in Spine Surgery
S. Tim Yoon, MD, PhD

The majority of these biologics are aimed at enhancing spinal fusion. Dr. Yoon delineates the principles that can be used to evaluate current and future generations of such osteobiologic products and discusses the most pertinent examples.

Motion Preservation Technologies: Alternatives to Spinal Fusion
Kern Singh, MD, and Howard S. An, MD

Three major categories of nonfusion technologies—total disc replacement, prosthetic nuclear implants, and posterior stabilization devices—are reviewed. Singh and An note that the emerging nonfusion implants, which can relieve pain, restore motion, and endure repetitive loads, may become attractive alternatives to arthrodesis but that judicious use is warranted until further clinical studies can validate their safety and efficacy.

 


 


> practice management


Reimbursement Essentials for the Orthopedic Practice
Sarah Wiskerchen, MBA, CPC

Billing and collections success comes from combining basic “blocking and tackling” reimbursement principles with technology advances that are accessible to even small practices.

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> original studies

Hyaluronans: Is Clinical Effectiveness Dependent on Molecular Weight?
Peter C. Vitanzo, Jr., MD, and Brian J. Sennett, MD

Vitanzo and Sennett review the literature in order to answer this question. They note that it is likely that the hyaluronans’ mechanism of action is based on several probable biological activities mediated through pharmacologic mechanisms that go beyond the physical, mechanical, and elastoviscous properties of these products.



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  > ASPECTS OF SPORT MEDICINE
 
Autologous Hamstring Anterior Cruciate Ligament Reconstruction in Patients Older Than 40
Matthew A. Javernick, MD, Benjamin K. Potter, MD, Andrew Mack, BS, Kenneth B. Dekay, BS, Kevin P. Murphy, MD

Is the use of the autologous hamstring technique a viable option for older patients—can results similar to those seen with bone-patellar tendon-bone technique be achieved? Should age alone be a limiting factor in deciding whether to perform ACL reconstruction?



  SUPPLEMENTS
 


Minimally Invasive Approaches to Total Knee Arthroplasty

  



Supported by an educational grant from Zimmer, Inc.