Related Experiment Video
Updated: Apr 29, 2026

Quantifying Learning in Young Infants: Tracking Leg Actions During a Discovery-learning Task
Published on: June 1, 2015
Abstract:
Of 73 limb lengthening patients, 35 were treated with distraction of the growth epiphysis, and 38 under diaphyseal-metaphyseal corticotomy. In all cases the lineal fixator and T-shaped fixator with spadai triplanar system invented by the author were used, achieving lengthenings up to 18 cm, the average being 6 cm. The anatomic and functional results show the efficiency of the method as well as the advantages of this external fixator, which can be used as neutralize^ distractor, compressor or bone carrier.
Related Concept Videos
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Development of the Limb Synovial Joints
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
Nature and Nurture
Bones of the Lower Limb: Tibia and Fibula
Signs of Puberty

