Does an Additional Antirotation U-Blade (RC) Lagscrew Improve Treatment of AO/OTA (Orthopaedic Trauma Association) 31 A1-3 Fractures With Gamma 3 Nail?

Does an Additional Antirotation U-Blade (RC) Lagscrew Improve Treatment of AO/OTA (Orthopaedic Trauma Association) 31 A1-3 Classified Fractures With Gamma 3 Nail?

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT02657902

Enrollment

135

Registered

2016-01-18

Start date

2009-01-31

Completion date

Unknown

Last updated

2016-01-18

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

Conditions

Hip Fractures

Brief summary

The purpose was to evaluate whether the additional use of the Gamma3 ® RC Lag Screw is associated with a reduced cutout rate in patients with OTA/AO 31A1-3 inter-trochanteric fractures.

Interventions

PROCEDUREFractures were treated with a Gamma 3 intramedullary nail

PROCEDUREFractures were treated with a Gamma 3 intramedullary nail + U-Blade

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* OTA/AO 31A1-3 fractures treated with Gamma 3® Nail (Stryker Trauma Germany) and either with standard lagscrews or with the Gamma3 ® RC Lag Screw (Stryker Trauma Germany)

Exclusion criteria

* Patients with pathological fractures * Patients treated with a long gamma nail were excluded

Design outcomes

Primary

Measure	Time frame	Description
Cutout rate	3 months after intervention	Differences in the Cutout rate of the femoral head screw with/without U-Blade antirational screw

Secondary

Measure	Time frame	Description
Mobility	3 months after intervention	Mobility of the patients 3 months after intervention measured with the Parker mobility score

Outcome results

None listed

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