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Incidence of Cut-out Using Intramedullary Nails With Double Cephalic Screw vs. Unique in Pertrochanteric Fractures

Comparison of the Incidence of Cut-out Between Intramedullary Nails With Double Cephalic Screw vs. Unique in Pertrochanteric Fractures: a Prospective Randomized Clinical Trial

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06293495
Enrollment
200
Registered
2024-03-05
Start date
2024-03-01
Completion date
2026-04-01
Last updated
2024-03-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Proximal Femoral Fractures

Keywords

Proximal femoral fracture, Hip fracture, Cut-out

Brief summary

The goal of this clinical trial is to compare outcomes in the treatment of proximal femur fractures. The main question it aims to answer is whether the use of a double cephalic screw prevents nail failure (cut-out). Participants will be treated using open reduction and internal fixation with a proximal femoral nail. Researchers will compare intramedullary nailing with a single cephalic screw (Gamma nail) and with a double cephalic screw (Chimaera nail) to see the cut-out rate.

Detailed description

Randomized, open and prospective clinical trial. Following the surgical indication for open reduction and internal fixation as treatment for proximal femoral fractures, patients will be randomly assigned (ratio 1:1) to one of the following treatments: Control group: a Gamma 3 nail (single cephalic screw system) will be used for osteosynthesis of the fracture. Experimental group: a Chimaera nail (system with double cephalic screw) will be used for osteosynthesis of the fracture. Patient (or their legal guardian) must provide/sign the informed consent prior to inclusion in the study. After the surgery, patients will be followed-up at 6 weeks, 3 and 6 months. At those times, data related to the radiological examination, the appearance of complications and the walking ability evaluation scale (FAC) will be collected.

Interventions

DEVICEGamma 3 Nail (Stryker)

Open reduction an internal fixation of proximal femoral fracture with a Gamma 3 nail (single cephalic screw system)

DEVICEChimaera Nail (Orthofix)

Open reduction an internal fixation of proximal femoral fracture with a Chimaera nail (system with double cephalic screw)

Sponsors

Puerta de Hierro University Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Randomized, prospective trial with a CE-marked medical devices

Eligibility

Sex/Gender
ALL
Age
70 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients with proximal femur fracture (OTA/AO 31-A1, A2 and A3) requiring surgical treatment. * Signing of written informed consent according to current legislation before collecting any information, either by the patient or by the legal representative or by people linked by family ties.

Exclusion criteria

* Presence of other fractures in the ipsilateral femur that condition the surgical treatment of the pertrochanteric femur fracture. * Subcapital fracture of the proximal femur. * Subtrochanteric fracture of the proximal femur. * Pathological fracture.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of cut-out.0-6 monthsCut-out is a mechanical complication consisting of varus collapse and migration of the cephalic screw through the femoral head.

Secondary

MeasureTime frameDescription
Tip-apex distance3-6 monthsDistance from the tip of the screw to the apex of the femoral head in the anteroposterior and axial views.
Parker index3-6 monthsIndicates the distance of the screw from the inferior edge of the femoral neck in anteroposterior view or from the posterior edge of the femoral neck in lateral view.
Functional Ambulatory Categories (FAC)0-6 monthsClassifies patients into 6 categories based on their ability and need for assistance with ambulation. Classifies patients into 6 categories based on their ability and need for help with ambulation, where 0 is equivalent to a patient with the impossibility of ambulation and 5 is a patient completely independent for ambulation.
Number of Surgical complications (Intraoperative)0-1 monthIntraoperative complications
Number of Surgical complications (post-operative)0-6 monthsPostoperative complications
Baumgaertner reduction quality criteria3-6 months3 groups are established according to the quality of reduction: good, acceptable and bad

Countries

Spain

Contacts

Primary ContactPedro Jose Torrijos Garrido, MD, PhD
pedrojose.torrijos@salud.madrid.org+34 91 191 74 85

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026