limb lengthening overview

The process of limb lengthening: internal vs external

Internal lengtheing

Limb lengthening is a gradual process commonly used to treat differences in bone length through new bone and soft tissue growth. Regeneration of bone and soft tissue occur as they are gently pulled apart at an approximate rate of one millimeter per day. The total amount of time required for the limb lengthening process is dependant on the length of growth needed in each individual case.

Limb lengthening consists of two phases:

• The distraction phase: during which the limb is lengthened to its desired measurement
• The consolidation phase: as the newly formed bone hardens and calcifies to its full strength

To protect the bone during these phases, the process of lengthening is performed using either internal or external fixation devices attached to the bony fragments. The treatment options depend on the individual deformity. Read below to learn more about these treatment methods.

External lengthening

What it is.