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Mapping the columns of the acetabulum--implications for percutaneous fixation
Abdulsalam Shahulhameed1, Craig S Roberts, Christopher L Pomeroy
1Department of Orthopaedic Surgery, University of Louisville, 210 East Gray Street, Suite 1003, Louisville, KY 40202, USA.
Injury
|September 8, 2009
Summary
This study measured acetabular column thickness in cadavers to guide safe percutaneous screw fixation for acetabular fractures. Results show anterior and posterior columns can safely accommodate 7.3mm screws.
Area of Science:
- Orthopedic Surgery
- Anatomy
- Biomechanics
Background:
- Percutaneous fixation of acetabular fractures requires precise knowledge of bony dimensions.
- Understanding the acetabular columns' thickness is crucial for safe screw placement.
Purpose of the Study:
- To determine the anatomical dimensions of the acetabular columns.
- To provide a clinical map for safe percutaneous screw fixation of acetabular fractures.
Main Methods:
- A cadaveric study was conducted on 22 hemipelves (11 pairs) from 6 males and 5 females.
- Measurements of bony thickness in the anterior and posterior columns were statistically analyzed.
Main Results:
- The anterior column's psoas groove measured 15.1mm (range, 12.1-18.2mm) and the obturator canal 15.9mm (range, 12.2-20.6mm).
- The posterior column wall averaged 21.3mm (range, 16.5-30.3mm) along the screw path.
- Anatomic data indicates 7.3mm cannulated screws can be safely used.
Conclusions:
- This study provides essential anatomical data for safe antegrade and retrograde percutaneous screw passage.
- The findings support the safe use of 7.3mm cannulated screws in acetabular fracture fixation.
