Atypical Versus Typical Subtrochanteric Femoral Fractures: Disparate Patient Profiles, Similar Outcomes

Area of Science:

• Orthopedic surgery
• Traumatology
• Bone healing research

Background:

• Subtrochanteric femur fractures present as typical or atypical.
• Understanding differences in patient demographics and clinical outcomes is crucial for effective treatment.

Purpose of the Study:

• To evaluate demographic variations and clinical outcomes between typical and atypical subtrochanteric femur fractures.
• Compare patient characteristics, injury mechanisms, and treatment results.

Main Methods:

• Retrospective review of 220 patients with operative subtrochanteric femur fractures.
• Fracture classification based on American Society for Bone and Mineral Research (ASBMR) criteria.
• Comparative analysis of demographic data, injury characteristics, surgical parameters, complications, and radiographic healing time.

Main Results:

• Atypical fractures were more common in females and associated with bisphosphonate use and lower-energy mechanisms.
• Anatomic reduction was more frequent in typical fractures, though overall complication and nonunion rates were similar.
• No significant differences were observed in radiographic healing time between typical (260.3 days) and atypical (246.4 days) fractures.

Conclusions:

• Despite distinct demographic and injury profiles, typical and atypical subtrochanteric femur fractures exhibit comparable clinical outcomes.
• Treatment strategies yield similar results regarding complications and healing regardless of fracture classification.