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Updated: Feb 18, 2026
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Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
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Comparing daily shoulder motion and frequency after anatomic and reverse shoulder arthroplasty
G Daniel G Langohr1, John P Haverstock1, James A Johnson1
1Investigations performed at the Roth|McFarlane Hand and Upper Limb Center, London, ON, Canada.
Journal of Shoulder and Elbow Surgery
|November 15, 2017
Summary
Shoulder arthroplasty patients showed similar daily motion to their non-operated side. Both anatomic (TSA) and reverse total shoulder arthroplasty (RTSA) had comparable motion patterns, aiding implant design.
Area of Science:
- Orthopedic surgery
- Biomechanical engineering
- Wear analysis
Background:
- Anatomic (TSA) and reverse total shoulder arthroplasty (RTSA) are common for glenohumeral arthrosis.
- Understanding shoulder motion is key for effectiveness evaluation and predicting implant wear.
Purpose of the Study:
- To measure and compare the total daily shoulder motion in patients post-TSA and post-RTSA.
Main Methods:
- 36 subjects wore instrumented garments to track upper extremity motion for one day.
- Calculated 3D joint motion and frequency, comparing TSA to RTSA.
- Extrapolated yearly shoulder motion from daily measurements.
Main Results:
- Most shoulder motion occurred below 80° elevation, with high hourly frequencies for both TSA and RTSA.
- Elevations above 80° were significantly less frequent for both groups.
- No significant differences in motion were found between TSA, RTSA, or contralateral asymptomatic shoulders.
Conclusions:
- Shoulder motion after TSA or RTSA is comparable to the contralateral asymptomatic side.
- No significant differences in motion or frequency exist between TSA and RTSA.
