Combined Nail and Plate Fixation in Proximal Femoral Fractures With Lateral Wall Deficiency

Assiut University

Status: Not yet enrolling

Conditions: Femoral Fractures

Treatments: Procedure: Proximal femoral nail with lateral plate augmentation

Study type: Interventional

Funder types: Other

Identifiers

NCT07277569

AUN-Ortho-NailPlate-2025

Details and patient eligibility

About

Proximal femoral fractures are a major cause of hospitalization and disability worldwide (1). They are commonly seen among elderly patients after low-energy trauma and in younger adults after high-energy injuries and represent a major challenge in orthopaedic management (2) (3).

These fractures pose unique biomechanical challenges because of axial compression, bending forces and the strong muscle pull that leads to flexion, abduction and external rotation of the proximal fragment (4). Operative management aims to restore anatomical alignment and length to allow early mobilization and weight bearing (5).

Intramedullary devices are widely considered the preferred option for fixation of intertrochanteric fractures, including both stable and unstable types. Their biomechanical advantages include a shorter lever arm, load sharing properties, reduced bending forces, prevention of proximal fragment lateral migration, nearing to the weight-bearing axis, supporting the medial calcar, and allowance for controlled impaction. Clinically, intramedullary nails are also associated with shorter operative time, less soft tissue dissection, reduced blood loss, and earlier mobilization, leading to improved functional outcomes (6-10).

The integrity of the lateral trochanteric wall plays a crucial role in construct stability by serving as a lateral buttress. Loss of this support results in uncontrolled collapse, medialization of the femoral shaft, excessive varus deformity, and limb shortening (11-12). In a cadaveric investigation, Nie et al. (13) reported that the proximal femoral nail provides adequate support to the medial wall but fails to sufficiently stabilize the lateral wall. Furthermore, clinical evidence has shown that approximately 22% of patients with lateral wall disruption required re-operation due to unsatisfactory initial fixation (14).

To address these challenges, recent studies have proposed combined fixation using an intramedullary nail augmented with a lateral plate, aiming to enhance stability, prevent varus collapse, and improve clinical outcomes in complex proximal femoral fractures (15).

However, evidence supporting this combined approach remains limited, with most available studies being small in scale and heterogeneous. Therefore, reporting outcomes from a case series may provide valuable insights into the feasibility, safety, and effectiveness of combined nail-plate fixation, and may serve as a foundation for future comparative studies.

Enrollment: 17 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Skeletally mature patients
• AO trochanteric fractures 31A2 or 31A3 with lateral wall thickness > 20.5 mm on pre-operative radiographs
• Injury Severity Score (ISS) ≤ 17

Exclusion criteria

• Open fractures (Gustilo-Anderson type III)
• Delayed presentation > 3 weeks
• Uncontrolled comorbidities (e.g., uncontrolled diabetes or hypertension; cardiac, renal, hepatic, or respiratory failure)

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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17 participants in 1 patient group

Nail plate construct

Active Comparator group

Description:

Combined intramedullary nail and lateral plate fixation for proximal femoral fractures with lateral wall deficiency. The construct includes a proximal femoral nail (PFN) augmented by a dynamic compression plate (DCP) to enhance stability and maintain reduction.

Treatment:

Procedure: Proximal femoral nail with lateral plate augmentation