Safety and Efficacy of Connecting the Residual Ear to the Cartilage Scaffold in First- vs. Second-Stage Surgery

Summary

Eligible patients will be admitted from the outpatient clinic to complete the relevant examinations after admission（Preoperative routine examination and chest CT）. The baseline parameters will be registered when admitted to hospital, including case number, diagnosis, sex, age, height, weight, and underlying medical conditions. Patients have at least 12 hours to consider participation in the study and will be given the opportunity to ask questions about the study. Written informed consent will be obtained by the surgical resident or the surgeon after admission to the hospital.

Randomization will be done by relevant member . After inclusion, patients will be allocated to one of the two study groups (First-stage Connection or Second-stage Connection) using an online randomization program. The perioperative care will be the same for all included patients.Surgery will be performed by experienced surgeons, with non-expanded ear reconstruction using autologous rib cartilage. The surgery normally comprises two stages. After each surgery, details and duration of the surgery will be documented. For each stage of surgery, patients are scheduled for visits about 3-6 months. In addition, after the total surgery, patients are to fill out 'Glasgow Benefit Inventory' and 'Patient and Observer Scar Assessment Scale'.

Conditions

• Microtia
• Outcome Assessment
• RCT
• Surgery Related Complications Rate
• Treatment Outcome
• Reconstruction

Interventions

PROCEDURE

Two-stage connection

Two-stage connection refers to a procedure that connecting and incorporating the cartilage framework with the residual ear during the second stage surgery of ear reconstruction. An intact cartilage framework is embedded in skin pocket in the first stage, hence, in the second stage of surgery, parts of the cartilage framework that has already survived will be shaved off to ensure the firm combination between the residual era cartilage and grafted costal cartilage.

PROCEDURE

One-stage connection

One-stage connection refers to a procedure that connecting and incorporating the cartilage framework with the residual ear in the first stage surgery of ear reconstruction. In one-stage surgery, the cartilage framework is connected with the residual ear (non-deformed, unexcluded part) to form a smooth and complete ear subunit structure. In this way, it is necessary to trim the excess postauricular skin, which may pose a greater risk of blood supply. After the first stage of surgery, the overall appearance of surgical ear is already roughly similar to that of a normal ear.

Sponsors & Collaborators

• Sichuan Provincial People's Hospital

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

6 Years

Max Age

30 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2025-06-01

Primary Completion

2027-02-20

Completion

2027-02-20

Countries

• China

Study Locations