What is LLRS?

Founded in 1989 as ASAMI—North America (The Association for the Study and Application of Methods of Ilizarov), the Limb Lengthening and Reconstruction Society is an organization devoted to stimulating scientific exchange and fostering research and clinical excellence in limb lengthening, limb reconstruction, extremity deformity correction, and complex fracture treatment.

The members of LLRS share an interest in the generation of bone and soft tissue by distraction, but do not limit their practices to the Ilizarov external fixation system. Members’ interests include external fixation of fractures, correction of limb deformities, lengthening of extremities, and treatment of chronic infections, nonunions and tumors.

LLRS activities include an annual scientific meeting, a Specialty Day program at AAOS’ annual meeting, an introduction to limb lengthening and reconstruction, and external fixation course, and research grants.


The Limb Lengthening and Reconstruction Society – ASAMI NA is devoted to the continuum, study and evolution of knowledge based on the understanding of bone biology, osteogenisis, regeneration and musculoskeletal applications.

Our purpose is to resolve acute and chronic musculoskeletal problems of pediatric and adult patients.

We strive to maintain the highest competency in the field of musculoskeletal deficiencies and reconstruction: limb length and extremity defects, long bone and going deformity, limb salvage, trauma and complex limb reconstruction.

An AAOS subspecialty society; we are committed to provide educational resources, research, clinical excellence and collegial cooperation.




Partner Organizations:

Pediatric Orthopaedic Society of North America
American Academy of Orthopaedic Surgeons


Objectives of The Limb Lengthening and Reconstruction Society: ASAMI North America:

  • To furnish leadership, foster advances, and enhance the study of distraction histogenesis and limb reconstruction as applied to diseases and disorders of the musculoskeletal system.
  • To function as an educational body responsible for the development of scientific programs, for the organization of current knowledge, for the standardization of nomenclature, and for the publication of scientific materials.
  • To act as a stimulant to research by providing a forum for presentation of new scientific advances and offering awards for special achievement.
  • To conduct meetings that will serve as a place where persons interested in this field of medicine can meet, discuss new ideas, and present scientific material.
  • To become a point of origin for individuals interested in obtaining post–graduate training in the clinical and scientific aspects of distraction histogenesis and limb reconstruction.
  • To recognize those who have contributed to the field of distraction histogenesis and limb reconstruction by extending to them membership in the Society.