Related Experiment Videos
Joint space in radiologically normal knees
J E Dacre1, D L Scott, J A Da Silva
1Department of Rheumatology, St Bartholomew's Hospital, West Smithfield, London.
British Journal of Rheumatology
|December 1, 1991
Summary
Men have larger joint spaces than women, and joint space size decreases with age in normal individuals. This impacts osteoarthritis development, particularly in women and the elderly.
Area of Science:
- Orthopedics
- Radiology
- Rheumatology
Background:
- Joint space loss is a key indicator of rheumatoid arthritis and osteoarthritis.
- Accurate assessment requires understanding normal joint space variability.
- Digital image analysis offers a method for quantifying joint space size.
Purpose of the Study:
- To measure normal joint space size in a population without arthritis.
- To identify demographic factors influencing normal joint space size.
- To establish a baseline for evaluating joint space loss in degenerative joint diseases.
Main Methods:
- Anteroposterior knee radiographs from 685 asymptomatic patients were analyzed.
- Digital image analysis was used to measure joint space dimensions.
- Data were analyzed for differences based on sex, age, weight-bearing status, and BMI.
Main Results:
- Men exhibited larger joint spaces than women.
- A consistent decline in joint space size was observed with increasing age.
- No significant differences were found related to weight-bearing, pain vs. injury presentation, height, weight, or BMI.
Conclusions:
- Normal joint space size varies significantly with sex and age.
- Age-related joint space loss may contribute to reaching a 'pain threshold' for osteoarthritis.
- Smaller initial joint spaces, common in women and the elderly, may predispose to earlier osteoarthritis symptoms.