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Updated: Jan 22, 2026

External Cephalic Version: Is it an Effective and Safe Procedure?
Published on: June 6, 2020
Comparison between new modified external rotation method and external rotation method for reduction of ASD.
1Health Science University Antalya Training and Research Hospital, Department of Emergency Medicine, Antalya, Turkey.
The modified external rotation reduction method (MERM) offers a faster alternative for reducing acute anterior shoulder dislocations (ASD) compared to the external rotation reduction method (ERM). MERM demonstrated a significantly shorter application time without increasing patient pain during the procedure.
Area of Science:
- Orthopedic surgery
- Traumatology
- Sports medicine
Background:
- Anterior shoulder dislocation (ASD) is a common injury requiring prompt reduction.
- Existing reduction methods, including the external rotation reduction method (ERM), have varying degrees of success and patient comfort.
- Novel techniques are sought to improve the efficiency and reduce the pain associated with shoulder dislocation reduction.
Purpose of the Study:
- To compare the efficacy and patient experience of a newly developed modified external rotation reduction method (MERM) against the established ERM for acute anterior shoulder dislocations.
- To evaluate differences in reduction time, pain scores, and success rates between MERM and ERM.
Main Methods:
- A randomized controlled study involving 62 patients diagnosed with acute anterior shoulder dislocations.
- Patients were randomly assigned to undergo reduction using either MERM or ERM.
- Data collected included pain scores (VAS), reduction time, success rates, and demographic/injury-related factors.
Main Results:
- The MERM group (n=32) showed a statistically significant reduction in mean application time compared to the ERM group (n=30) (1.34 ± 1.41 min vs. 3.05 ± 1.93 min; p < 0.001).
- No significant difference in intra-reduction Visual Analog Scale (VAS) pain scores was observed between the MERM and ERM groups (85.31 ± 10.39 vs. 78.33 ± 16.54; p = 0.122).
- The study included a cohort of 62 patients (52 males, 10 females; mean age 35 years).
Conclusions:
- The modified external rotation reduction method (MERM) is a viable and faster alternative for the reduction of acute anterior shoulder dislocations.
- MERM provides a comparable pain experience to ERM while significantly reducing the time required for the procedure.
- Further research may explore long-term outcomes and broader clinical application of MERM.
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