Research Article

Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study

Volume: 13 Number: 1 May 1, 2026
TR EN

Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study

Abstract

Objective: This study aimed to quantify the pre- and postoperative changes in spinal alignment in patients treated with unilateral mastectomy for breast cancer using the Cobb angle, and to evaluate the long-term postural effects of surgery.

Materials and Methods: This retrospective, single-center study included 29 patients who underwent unilateral simple mastectomy or modified radical mastectomy for histopathologically confirmed breast cancer between January 2, 2020, and September 30, 2024, with a minimum postoperative follow-up of 12 months. Cobb angles were measured from coronal vertebral sections on positron emission tomography-computed tomography scans obtained before and after surgery. Vertebral curvature direction and slope side (ipsilateral, contralateral, or neutral relative to the mastectomy side) were determined. The magnitude of postural change was calculated as the absolute difference between postoperative and preoperative Cobb angles.

Results: The mean age was 53.55 ± 13.32 years, and the mean BMI was 29.33 ± 5.84 kg/m². The mean preoperative Cobb angle was 7.16 ± 7.05°, increasing to 9.03 ± 6.23° postoperatively (z = 3.353, p = 0.001). Contralateral postural tilt developed in 62.1% of patients. Ten patients (34.5%) exceeded the ≥10° scoliosis threshold postoperatively, compared with seven (24.1%) preoperatively. BMI differed significantly according to slope side (p = 0.016).

Conclusion: Measurable postural changes in spinal alignment develop following unilateral mastectomy, predominantly in the contralateral direction. These findings suggest that postural assessment should be integrated into long-term postoperative follow-up, and early rehabilitation strategies should be considered when indicated.

Keywords

Supporting Institution

No financial support was received for this study.

Ethical Statement

Ethical approval for this study was obtained from the Clinical Research Ethics Committee of Ordu University Faculty of Medicine (decision number: 135, dated: October 11, 2024).

Thanks

This study was derived from the medical specialty thesis of Yasemin Dönmez Yurtsever, entitled "Evaluation of Body Posture After Unilateral Mastectomy in Patients with Breast Cancer: A Retrospective Single-Center Study."

References

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Details

Primary Language

English

Subjects

Clinical Sciences (Other)

Journal Section

Research Article

Publication Date

May 1, 2026

Submission Date

February 5, 2026

Acceptance Date

April 29, 2026

Published in Issue

Year 2026 Volume: 13 Number: 1

APA
Dönmez Yurtsever, Y., Akalın, C., Şahin, A. A., & Demir, M. (2026). Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study. ODÜ Tıp Dergisi, 13(1), 10-19. https://doi.org/10.56941/odutip.1882907
AMA
1.Dönmez Yurtsever Y, Akalın C, Şahin AA, Demir M. Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study. ODU Med J. 2026;13(1):10-19. doi:10.56941/odutip.1882907
Chicago
Dönmez Yurtsever, Yasemin, Cağrı Akalın, Abdullah Alper Şahin, and Mümin Demir. 2026. “Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study”. ODÜ Tıp Dergisi 13 (1): 10-19. https://doi.org/10.56941/odutip.1882907.
EndNote
Dönmez Yurtsever Y, Akalın C, Şahin AA, Demir M (May 1, 2026) Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study. ODÜ Tıp Dergisi 13 1 10–19.
IEEE
[1]Y. Dönmez Yurtsever, C. Akalın, A. A. Şahin, and M. Demir, “Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study”, ODU Med J, vol. 13, no. 1, pp. 10–19, May 2026, doi: 10.56941/odutip.1882907.
ISNAD
Dönmez Yurtsever, Yasemin - Akalın, Cağrı - Şahin, Abdullah Alper - Demir, Mümin. “Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study”. ODÜ Tıp Dergisi 13/1 (May 1, 2026): 10-19. https://doi.org/10.56941/odutip.1882907.
JAMA
1.Dönmez Yurtsever Y, Akalın C, Şahin AA, Demir M. Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study. ODU Med J. 2026;13:10–19.
MLA
Dönmez Yurtsever, Yasemin, et al. “Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study”. ODÜ Tıp Dergisi, vol. 13, no. 1, May 2026, pp. 10-19, doi:10.56941/odutip.1882907.
Vancouver
1.Yasemin Dönmez Yurtsever, Cağrı Akalın, Abdullah Alper Şahin, Mümin Demir. Evaluation of Body Posture After Unilateral Mastectomy in Breast Cancer Patients: A Retrospective Single-Center Study. ODU Med J. 2026 May 1;13(1):10-9. doi:10.56941/odutip.1882907

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