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In vivo CT study of carpal axial alignment
A Gupta1, N M Al Moosawi, R P Agarwal
1A-41, Pandara Road, New Delhi-110003, India. drajaygupta@hotmail.com
Surgical and Radiologic Anatomy : SRA
|September 19, 2003
Summary
This study measured carpal bone axial alignment using CT scans in healthy individuals. Findings establish a baseline for normal carpal alignment, crucial for diagnosing wrist conditions.
Area of Science:
- Orthopedics
- Radiology
- Anatomy
Background:
- Axial rotation is key to wrist movement, yet axial carpal alignment is understudied.
- Understanding normal axial alignment is vital for diagnosing wrist pathologies.
Purpose of the Study:
- To establish a reference database for normal axial alignment of carpal bones.
- To provide quantitative data on carpal bone axes and angles in asymptomatic individuals.
Main Methods:
- Computed tomography (CT) imaging of wrist joints in 53 asymptomatic volunteers.
- Measurement of axial axes for carpal bones and distal radius.
- Repetition of measurements in 10 volunteers to assess reliability.
Main Results:
- Scaphoid axis: 89% supinated (mean 16°).
- Lunate axis: 83% supinated (mean 13°).
- Defined mean values for radioscaphoid, radiolunate, scapholunate, lunotriquetral, and lunocapitate angles.
Conclusions:
- The study provides essential reference data for normal carpal axial alignment.
- This data can aid in identifying abnormal axial alignment in wrist pathologies.
- Enables quantification of normal and abnormal axial carpal bone motion.