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Related Experiment Videos

An evaluation device for quantifying joint stiffness in the burned hand.

S H Luster1, P E Patterson, W G Cioffi

  • 1U.S. Army Institute of Surgical Research, Fort Sam Houston, TX 78234-5102.

The Journal of Burn Care & Rehabilitation
|July 1, 1990
PubMed
Summary

A new electronic device quantifies finger joint stiffness, showing dynamic flexion splinting significantly improves motion in burned hands. Initial stiffness may predict treatment success, with longer durations not necessarily improving outcomes.

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Medicine
  • Orthopedics

Background:

  • Burn injuries frequently result in finger joint stiffness, limiting hand function.
  • Quantifying joint stiffness is crucial for assessing treatment efficacy in hand rehabilitation.

Purpose of the Study:

  • To develop and validate an electronic device for measuring finger joint stiffness.
  • To evaluate the impact of dynamic flexion splinting on joint motion in patients with burned hands.

Main Methods:

  • An electronic device was developed to measure the angle of primary resistance and reactive torque in finger joints.
  • Four patients with stiff hands underwent dynamic splinting treatment over three days.
  • Measurements of joint stiffness were taken before and after treatment.

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Main Results:

  • The device successfully quantified finger joint stiffness using reactive torque and joint excursion.
  • Statistically significant improvements were observed in the angle of primary resistance (p < 0.0001) and reactive torque (p < 0.001) after splinting.
  • Dynamic flexion splinting demonstrated a positive effect on joint condition and range of motion.

Conclusions:

  • Finger joint stiffness can be objectively quantified by reactive torque and joint excursion.
  • Dynamic rubber-band flexion splinting effectively improves joint motion in patients with burned hands.
  • Initial joint stiffness may serve as a prognostic indicator for treatment outcomes, and extended treatment duration may not yield additional benefits.