Morphological analysis of the proximal femur using quantitative computed tomography

Area of Science:

• Orthopedic Surgery
• Radiology
• Anatomy

Background:

• Understanding proximal femur anatomy is crucial for orthopedic procedures.
• Previous studies have not fully elucidated the primary load-bearing structures of the femoral head.

Purpose of the Study:

• To identify and characterize the primary supporting structure of the proximal femur.
• To compare findings from quantitative computed tomography (QCT) with traditional anatomical methods.

Main Methods:

• Quantitative computed tomography (QCT) was used to analyze 35 proximal femur specimens.
• Results were compared with anatomical sections examined via plane radiography and gross dissection.

Main Results:

• The primary compressive strut, a dense trabecular bone column, was identified as the main supporting structure of the femoral head.
• This strut connects the pressure buttress of the medial femoral neck to the epiphyseal scar and exhibits high bone density.
• Ward's triangle showed structural deficiencies in several specimens, questioning the load-bearing role of tensile trabeculae.

Conclusions:

• The primary compressive strut is the predominant load-bearing structure between the femoral head and neck.
• This anatomical knowledge can inform surgical techniques like fracture fixation, hip arthroplasty, and allograft transplantation.