Long-term Outcome After Removal of Rib Stabilization Hardware in Patients With Blunt Chest Trauma

Study Overview
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Brief Summary
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The main study objective is to evaluate the long-term outcome in a prospective follow-up visit of patients who underwent hardware removal after surgical stabilization of rib fractures (SSRF) after a blunt chest trauma .

Detailed Description
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Potential of surgical stabilization of rib fractures (SSRF) to improve clinical outcomes in patients has been demonstrated with increasing interest of surgeons in this procedure and indications for SSRF expanding. Some reports found signals for hardware removal after SSRF such as hardware failure, infections and persisting pain. There is currently lack of studies collecting systematically long-term outcomes after SSRF hardware removal. For that reason, this project presents the retrospective case series of patients with removal of osteosynthetic material after rib stabilisation treated at Department of Thoracic Surgery of the University Hospital Basel (USB). The recovery of these patients will be reviewed and a prospective evaluation of long-term outcomes will be done. The aim is to provide an insight and implications for treatment strategies of future patients. Most of the collected patient data are retrospective data. One prospective follow-up visit inclusive a health survey per patient will be performed.

Official Title
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Long-term Outcome After Removal of Rib Stabilization Hardware in Patients With Blunt Chest Trauma

Conditions
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Rib Fractures

Intervention / Treatment
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* Other: Data collection on patient reported long-term outcome of SSRF hardware removal


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient treated at the Department of Thoracic Surgery, USB for implantation and removal of rib fixation hardware Blunt chest trauma/injuries to the thorax: Patient with blunt chest trauma (with or without polytrauma) before SSRF implantation and subsequent hardware removal Rib fracture: At least one rib fracture (unilateral and/or bilateral incl. flail chest) on radiography chest imaging on time of SSRF implantation. Patients with rib fracture/non-union due to pseudoarthrosis are included. Rib fixation material implantation and removal: Patient underwent surgery for rib fracture and implantation of at least one (partially or complete) rib fixation material (at any time point) with later hardware removal (partially or complete) (at any time point between 01.09.2017 and 30.09.2023) Patient of all gender Patient ≥18 years at time point of rib stabilization Signed written informed consent prior to initiation of any protocol-specific activities/procedure Patient will be included if a signed USB general research consent approval is available but patient cannot be reached or disagreed to come to the follow-up visit Patient who died will be included if a signed USB general research consent approval is available Exclusion Criteria: Patients who received re-osteosynthesis on the same day as hardware removal Patients received conservative therapy or surgery with absorbable plates On hardware implantation: Penetrating chest trauma Only random findings of rib fractures Solitary sternocostal joint fracture and/or solitary sternum fracture and/or solitary fractures of rib connecting parts and/or solitary thoracic spine/vertebra fracture In-hospital: Patient suffered only iatrogenic rib facture during a surgery, cardiac surgery Rib fractures/non-unions caused by malignancy or rib surgery due to malignancy, radiation therapy, COPD, coughing Inability to follow procedures or insufficient knowledge of language (German/French) or impaired communication or inability to give consent Patients who have clearly stated that they would not agree in providing their clinical data for scientific purposes

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Surgical stabilization of rib fractures (SSRF) and subsequent hardware removal<br>Patients treated at the Department of Thoracic Surgery at the University Hospital Basel between 01.09.2017 and start date Remove Study with a diagnosis of rib fracture and with surgical stabilization of rib fracture and subsequent hardware removal will be identified. | Other: Data collection on patient reported long-term outcome of SSRF hardware removal<br>* One prospective follow-up visit will be performed. On this visit the patient reported long-term outcome will be documented through a health survey.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Health survey of long-term outcome after hardware removal (Quality of life assessment) | The questions are formulated as an adapted question set of the EQ-5D-5L Dimension (EQ-5D-5L) questionnaire followed by additional study specific questions. A numerical rating scale (NRS) will be used for evaluation from 0 - 10. In addition, the patient will be asked to rate the condition now compared to before hardware removal in four categories (less good, no change, slightly better, much better). The analysis of the project data will be done descriptive. | One time assessment at baseline (prospective Follow up-visit) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of removed hardware | Number of removed hardware and affected ribs (retrospective analyses) | Up to 3 years until prospective Follow up-visit | 
| Number of broken and fixed ribs | Number of broken and fixed ribs with used hardware (retrospective analyses) | Up to 3 years until prospective Follow up-visit | 
| Interval between SSRF and hardware removal | Interval between SSRF and hardware removal (retrospective analyses) | Up to 3 years until prospective Follow up-visit | 
| Interval between SSRF and follow-up visit | Interval between SSRF and follow-up visit (retrospective analyses) | Up to 3 years until prospective Follow up-visit | 
| Occurrence of significant complications during and 30 days after SSRF hardware removal | Occurrence of significant complications during and 30 days after SSRF hardware removal (retrospective analyses) | Up to 3 years until prospective Follow up-visit | 
| Surgical indication for hardware removal | Surgical indication for hardware removal | Up to 3 years until prospective Follow up-visit | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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surgical stabilization of rib fractures (SSRF), hardware failure, hardware-related complications, hardware removal, blunt chest trauma, rib osteosynthesis