Methods to quantify gait rehabilitation following lower limb fractures

Area of Science:

• Orthopedics
• Biomechanics
• Rehabilitation Medicine

Background:

• Lower limb fragility fractures necessitate extensive rehabilitation and incur significant treatment costs.
• Early weight-bearing and walking stability are crucial indicators of successful fracture recovery.
• Objective quantification methods are needed to assess functional restoration after fractures.

Purpose of the Study:

• To introduce and validate numerical methods for quantifying weight-bearing and walking stability post-fracture.
• To assess functional recovery across various ankle and knee joint fractures.
• To establish reference thresholds for fracture restoration indices compared to healthy limbs.

Main Methods:

• Collected experimental data using force plates from 367 subjects across seven groups: ankle fracture (AF), lower leg ankle fracture (AL), calcaneus foot fracture (CF), knee tibia fracture (KF), knee patella fracture (KP), kneecap rupture (KR), and normal limb (NL).
• Analyzed intralimb and interlimb weight-bearing and walking stability for all fracture conditions.
• Statistically compared fracture group data against normal limb (NL) thresholds.

Main Results:

• Developed methods to numerically quantify weight-bearing, walking stability, and gait symmetry.
• Provided detailed analysis of fractured limb functionality during gait subphases.
• Established statistically significant differences between fracture groups and normal limbs.

Conclusions:

• The proposed methods offer a low-setup approach to quantify fracture restoration and gait symmetry.
• These tools provide comprehensive insights into fractured limb function, aiding in managing complications.
• The assessments serve as valuable references for evaluating existing and new rehabilitative interventions in clinical research.