Orchidopexy Randomized Clinical Assessment (ORCA)

February 8, 2024 updated by: Caleb Nelson, Boston Children's Hospital

Randomized Trial of One Stage vs Two Stage Orchidopexy for Abdominal Undescended Testis

This is a randomized trial designed to evaluate testicular outcomes after a single stage versus a two-stage surgical procedure to fix an undescended, one-sided testicle located in the abdomen. Also to determine and compare the costs, surgical complications and the health related quality of life for the two procedures. Testicular outcomes will be measured using a scrotal ultrasound 6-12 months after the procedure (after the second stage procedure for those randomized to a 2 stage surgery).

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

66

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • United States
    • Massachusetts
      • Boston, Massachusetts, United States, 02115
        • Recruiting
        • Boston Children's Hospital
        • Contact:
        • Principal Investigator:
          • Caleb P Nelson, MD, MPH

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

1 year to 1 year (Child)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Boys age 4 months to 36 months
  • Undergoing diagnostic laparoscopy for unilateral non-palpable testis, who are found at laparoscopy to have an abdominal undescended testis, in whom a Fowler-Stephens Orchiopexy would be appropriate.

Exclusion Criteria:

  • Age > 36 months
  • Age < 4 months
  • Bilateral cryptorchidism
  • Solitary testis
  • Findings at laparoscopy for which Fowler-Stephens Orchiopexy would not be indicated
  • Intra-operative mobility of the intra-abdominal testis such that, with no (or minimal) mobilization, the testis is able to reach the contralateral internal ring, without dividing the spermatic vessels.
  • Assessment of whether a single stage primary orchidopexy will be performed, is entirely at the discretion of the attending surgeon.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Stage 1- Single-stage Fowler-Stephens orchidopexy (FSO)
Stage 1 single surgery to clip the vessels to the testis, divide the spermatic vessels and bring the testis into the scrotum.
Procedure: Single-stage Fowler-Stephens orchidopexy (FSO)
Other: Stage 2- Two-stage Fowler-Stephens orchidopexy (FSO)
Stage 2 2 surgeries: 1st surgery-Clip vessels to testis. 2nd surgery done 6-12 months later, divide the spermatic vessels and bring the testis into the scrotum.
Procedure: Two-stage Fowler-Stephens orchidopexy (FSO)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
To evaluate the volume of the operated testis via ultrasound measurements.
Time Frame: 6-12 months after final FSO surgery
To evaluate the volume of the operated testis at 6-12 months after single-stage Fowler-Stephens orchidopexy (FSO) (6-12 months after two- stage FSO), as determined by ultrasound measurements. This will be compared to the intra-operative testicular measurements done during the laparoscopy.
6-12 months after final FSO surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Boston Children's Hospital

Investigators

  • Principal Investigator: Caleb P Nelson, MD, MPH, Boston Children's Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2014

Primary Completion (Estimated)

December 31, 2024

Study Completion (Estimated)

December 31, 2024

Study Registration Dates

First Submitted

September 2, 2014

First Submitted That Met QC Criteria

September 8, 2014

First Posted (Estimated)

September 10, 2014

Study Record Updates

Last Update Posted (Actual)

February 9, 2024

Last Update Submitted That Met QC Criteria

February 8, 2024

Last Verified

February 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • P00008033

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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