Center for Excellence in Limb Lengthening and Reconstruction

Texas Scottish Rite Hospital for Children began researching limb lengthening more than two decades ago. Initial research was based on the Ilizarov treatment method developed by Dr. Gavril Ilizarov in Russia. Two of TSRHC's physicians trained under Dr. Ilizarov for more than 10 years.

With the goal in mind to make the entire lengthening process easier for the patient, TSRHC researchers have modified Ilizarov's technique to develop the TRUE/LOK External Fixation System. In 2003, the hospital formed the Center for Excellence in Limb Lengthening and Reconstruction (CELLR), directed by Dr. John Birch and Dr. Mikhail Samchukov. The center focuses on improving current external circular fixation systems and distraction osteogenesis techniques.


The center's 51 successfully completed or ongoing research projects place the hospital in a leadership position in the field of limb reconstruction research and development in the United States and worldwide. Results of the center's accomplishments have been presented at hundreds of national and international meetings and published in 62 peer-reviewed journal articles and book chapters and more than 220 abstracts.

TRUE/LOK External Fixation System

Intensive research and design work at TSRHC led to the development of most advanced circular external fixator in the world, the TRUE/LOK External Fixation System. Since 1993, the system underwent subsequent transformation and has been used to treat patients at TSRHC and other clinics in the United States and abroad. The most recent developments lead to the design of a new generation of the device called True/Lok-Hex that is predicted to surpass all other renowned systems of its kind. The hospital holds 9  U.S. and international patents on the TRUE/LOK™ system, while another 13 patents are pending.

For More Information

Please call the Research department at (214) 559-7877 or (800) 421-1121, ext. 7877.