LEGION Hinge Safety and Efficacy Study


The purpose of the current investigation is to assess the safety and efficacy of a new hinged revision knee device. This device is designed to provide efficient, reproducible reconstructions with optimal limb and implant alignment, durable implant fixation, and functional outcomes that increasingly approach those of primary Total Knee Arthroplasty (TKA).

Study Start Date

August 2015

Estimated Completion Date

August 2021


  • Device: LEGION Hinge Knee System


  • Nursing: Ortho/Rheum
  • Family Medicine: Orthopedic/Physical Med
  • Orthopedics: Knee,Surgical Technique
  • Physician Assistant: Orthopedics

MeSH Terms

  • Knee Arthroplasty

Study ID

Smith & Nephew, Inc. -- 13-4042-01



Trial ID


Study Type


Trial Phase


Enrollment Quota



Smith & Nephew, Inc.

Inclusion Criteria

  • Subject has gross knee instability resulting from loss of collateral ligament function, gross bone loss, comminuted fractures of the proximal tibia or distal femur, rheumatoid arthritis, post-traumatic arthritis, osteoarthritis, degenerative arthritis, failed osteotomies, unicompartmental replacement or total knee replacement, or absent or incompetent posterior cruciate ligament and one or both of the collateral ligaments
  • Subject has a failed primary or revision knee replacement
  • Subject is 18-80 years of age
  • Subject is skeletally mature in Investigator's judgment i.e., subject is not actively growing or does not have immature bones for any reason
  • Subject has met an acceptable preoperative medical clearance and is free of or treated for cardiac, pulmonary, hematological, infection or other conditions that would pose excessive operative risk
  • Subject is willing to sign and date an IRB/EC-approved consent form
  • Subject plans to be available through the five (5) year postoperative follow-up
  • If of child bearing potential, Subject reports she is not pregnant nor plans to become pregnant during the study
  • Subject agrees to follow the study protocol

Exclusion Criteria

  • Subject is receiving the study device as a primary knee replacement
  • Subject has presence of malignant tumor, metastatic, or neoplastic disease
  • Subject is not expected to return to normal ambulatory function (i.e., morbid obesity or other limiting co-morbidities)
  • Subject is pregnant or plans to become pregnant during the course of the study
  • Subject has conditions that may interfere with the revision arthroplasty survival or outcome (i.e., Paget's or Charcot-Marie-Tooth disease, vascular insufficiency, muscular atrophy, uncontrolled diabetes, moderate to severe renal insufficiency or neuromuscular disease)
  • Subject has known (Subject reported) metal hypersensitivity
  • Subject has an emotional or neurological condition that would pre-empt their ability or willingness to participate in this study
  • Subject has BMI>45
  • Subject is participating in any other pharmaceutical, biologic, or medical device clinical investigation or has been treated with an investigational product in the past 30 days
  • Subject is facing current or impending incarceration
  • Subject is not a good candidate for the study based on Investigator opinion




18 Years to 80 Years

Accepts Healthy Volunteers


Study Locations and Contact Information (2)

Study Location Distance Name Phone Email
Hospital for Special Surgery - New York, New York 48.5 miles Kaitlin Carroll 212-714-6084 carrollk@hss.edu
Baylor Research Institute at Baylor Regional Medical Center Plano - Plano, Texas 1,413.1 miles Jasmeet Gill 469-814-4812 Jasmeet.Gill@BSWHealth.org

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