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Updated: Jan 20, 2026

Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
Shoulder Dystocia during Delivery and Long-Term Neurological Morbidity of the Offspring
Ziv Harari1, Omri Zamstein2, Eyal Sheiner1
1Goldman School of Medicine, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
Insights
Shoulder dystocia (SD) risk factors include fetal macrosomia, maternal diabetes, male gender, and advanced maternal age. Importantly, SD does not appear to increase long-term neurological risks for offspring.
Area of Science:
- Obstetrics and Gynecology
- Neonatal Neurology
- Perinatal Epidemiology
Background:
- Shoulder dystocia (SD) is a rare but significant obstetric complication.
- Understanding risk factors and long-term implications for offspring neurological outcomes is crucial for clinical practice.
Purpose of the Study:
- To identify risk factors associated with shoulder dystocia.
- To evaluate the impact of shoulder dystocia on the neurological outcomes of live-born infants up to 18 years of age.
Main Methods:
- A large cohort analysis of 207,571 deliveries was conducted.
- General estimation equation multivariable analyses identified risk factors for SD.
- Kaplan-Meier curves and Cox proportional hazards models assessed cumulative neurological hospitalization incidence and controlled for confounders.
Main Results:
- Shoulder dystocia occurred in 0.2% of deliveries.
- Identified risk factors for SD included fetal macrosomia, maternal diabetes mellitus, male infant gender, and advanced maternal age (p < 0.05).
- Despite higher perinatal mortality in SD cases, no significant differences in neurological conditions or cumulative neurological-related hospitalizations were observed between SD and non-SD groups (adjusted HR = 0.73; p = 0.381).
Conclusions:
- Fetal macrosomia, maternal diabetes, male gender, and advanced maternal age are significant risk factors for shoulder dystocia.
- Shoulder dystocia is not associated with increased long-term neurological morbidity in offspring.
Objective:
The study aimed to evaluate risk factors and implications of shoulder dystocia (SD) on the neurological outcome of successfully delivered offspring.
Study Design:
This is a cohort analysis including 207,571 deliveries. Risk factors for SD were evaluated using general estimation equation multivariable analyses. Offspring hospitalization incidence up to age 18 years due to neurological conditions was compared between both groups. Kaplan-Meyer curve was used to assess the cumulative hospitalization incidence. Cox proportional hazards model was used to control for confounders.
Results:
SD complicated 0.2% (n = 353) of deliveries included in the study (n = 207,571). Risk factors for SD were fetal macrosomia, maternal diabetes mellitus, male gender, and advanced maternal age (p < 0.05 for all). Higher perinatal mortality was observed among SD cases (2.8 vs. 0.4%, p < 0.001). In most of the investigated neurological conditions no significant differences were found between the groups. Comparable rates of cumulative neurological-related hospitalization were observed (log rank p-value = 0.342) as well as lack of association between SD and neurological hospitalization (adjusted HR = 0.73; 95% CI 0.36-1.47; p = 0.381) when controlled for gestational age.
Conclusion:
Risk factors for SD are macrosomia, diabetes mellitus, male gender, and advanced maternal age. SD is not associated with long-term neurological morbidity of the offspring.
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