Evaluation of Cervical Posture, Cervical Function, and Neck Pain After Laparoscopic Sleeve Gastrectomy: A Prospective Study
Sponsor study identifier
observational
25
1 country
1
Study Start
September 24, 2026
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
July 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
January 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Obesity may contribute to neck pain, altered cervical posture, and impaired cervical function through increased mechanical loading, changes in body alignment, and reduced muscle performance. Although laparoscopic sleeve gastrectomy can produce substantial weight loss, its effects on cervical posture and neck-related function have not been studied comprehensively. This prospective, single-center study will include approximately 25 adults who are already scheduled to undergo laparoscopic sleeve gastrectomy as part of their routine clinical care. The decision to perform surgery and the surgical procedure itself will not be assigned or modified by the study. Participants will be evaluated before surgery and at 3, 6, and 12 months after surgery. Study assessments will include neck-related disability, neck pain intensity, quality of life, cervical range of motion, cervical muscle strength and endurance, and cervical joint position sense. Existing preoperative lateral cervical radiographs will be reviewed, and a lateral cervical radiograph will be obtained at the 12-month follow-up to assess cervical spinal alignment. The primary outcome will be the change in Neck Disability Index scores across the scheduled study assessments. The study aims to determine whether weight loss following laparoscopic sleeve gastrectomy is associated with changes in cervical posture, neck pain, and cervical function.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
January 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
September 4, 2026
Actual (reported)September 10, 2026
Actual (reported)September 24, 2026
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
July 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
January 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Change in Neck Disability Index (NDI) Score
The Neck Disability Index is a 10-item self-reported questionnaire used to assess neck-related disability. Each item is scored from 0 to 5, resulting in a total score ranging from 0 to 50, with higher scores indicating greater disability. Neck Disability Index scores will be recorded at the preoperative baseline assessment and at the scheduled postoperative follow-up visits. Changes in scores across the study assessments will be analyzed.
Preoperative baseline and 3, 6, and 12 months after laparoscopic sleeve gastrectomy
Change in Neck Pain Intensity at Rest and During Activity
Preoperative baseline and 3, 6, and 12 months after laparoscopic sleeve gastrectomy
Adults with obesity who are scheduled to undergo laparoscopic sleeve gastrectomy based on routine clinical indications. Participants will be evaluated before surgery and at 3, 6, and 12 months after surgery to assess changes in cervical posture, neck pain, and cervical function. The decision to perform surgery and the surgical procedure will not be assigned or modified by the research protocol.
Laparoscopic sleeve gastrectomy will be performed by the bariatric surgery team according to routine clinical indications and standard institutional practice. The decision to perform surgery, the surgical technique, and perioperative management will not be assigned or modified by the study protocol. The study will prospectively assess changes in cervical posture, neck pain, cervical disability, and cervical function following the procedure.
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The study population will consist of adults with obesity who have been scheduled to undergo laparoscopic sleeve gastrectomy based on routine clinical indications at the Bariatric Surgery Unit of Haydarpasa Numune Training and Research Hospital. Eligible patients must have a previously obtained lateral cervical radiograph available in the hospital information system or national electronic health record.
University of Health Sciences, Haydarpasa Numune Training and Research Hospital
Istanbul, Istanbul, 34668, Turkey (Türkiye)
Marques C, Granstrom E, MacDowall A, Moreira NC, Skeppholm M, Olerud C. Accuracy and Reliability of X-ray Measurements in the Cervical Spine. Asian Spine J. 2020 Apr;14(2):169-176. doi: 10.31616/asj.2019.0069. Epub 2019 Nov 1.
Ergin A, Ergin E, Atasever A, Ciyiltepe H, Fersahoglu MM, Esen Bulut N, Tasdelen I, Gunes Y, Teke E, Yilmaz C, Illeez O, Usta B, Sancak S. Investigation of the effect of weight loss after laparoscopic sleeve gastrectomy on cobb angle, waist and back pain: a prospective study. Surg Obes Relat Dis. 2023 Dec;19(12):1357-1365. doi: 10.1016/j.soard.2023.07.010. Epub 2023 Aug 4.
First Submitted
September 4, 2026
First Posted
September 10, 2026
Study Start
September 24, 2026
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
July 2027
Outcomes Of Laparoscopic Sleeve Gastrectomy In Patients With Hypothyroidism And Depression
Change in Cervical Range of Motion
Preoperative baseline and 3, 6, and 12 months after laparoscopic sleeve gastrectomy
Change in Cervical Muscle Strength
Preoperative baseline and 3, 6, and 12 months after laparoscopic sleeve gastrectomy
Change in Cervical Muscle Endurance
Preoperative baseline and 3, 6, and 12 months after laparoscopic sleeve gastrectomy
Change in Cervical Proprioception
Preoperative baseline and 3, 6, and 12 months after laparoscopic sleeve gastrectomy
Contact the study team to confirm eligibility.
Cakir T, Oruc MT, Aslaner A, Duygun F, Yardimci EC, Mayir B, Bulbuller N. The effects of laparoscopic sleeve gastrectomy on head, neck, shoulder, low back and knee pain of female patients. Int J Clin Exp Med. 2015 Feb 15;8(2):2668-73. eCollection 2015.
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
January 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
September 28, 2026
Record last verified: 2026-09
Individual participant data will not be publicly shared because of participant confidentiality and institutional data-protection requirements.
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Source: ClinicalTrials.gov.
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