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Transtibial Osseointegration
NCT06636136 · View on ClinicalTrials.gov ↗
Study Summary
Purpose: Aim 1: Quantify soft tissue complications and infections of service members with transtibial amputations treated with OPRA OI and compare them to transfemoral OI service members. Aim 2: Compare the validated domains, such as functional, quality of life and pain scores, from the preoperative baseline to follow-up visits to determine if persons with transtibial amputations treated with OPRA osseointegrated prostheses demonstrate statistically significant and clinically relevant improvements. Aim 3: Compare physical performance measures preoperatively to follow-up visits for persons with transtibial amputations treated with OPRA osseointegrated prostheses to quantify statistically significant and clinically relevant improvements. Aim 4: Quantify the biomechanical loading and bone quality changes that are directly associated with patient reported outcomes for persons with transtibial amputations treated with OPRA osseointegration. Aim 5: Compare outcome measures between persons with traditional socket prostheses (patients as self-controls) and OPRA OI devices as well as a comparison between persons with transtibial OI and transfemoral OI. Subject Population: Male and female military health care beneficiaries age 22 to 65 years old presenting with a Transtibial limb loss. Study Design: This is a 4-year, prospective cohort FDA pivotal study involving off-label use of the OPRA OI implant in persons with transtibial amputation. Procedures: SURGICAL PROCEDURES: Surgery Stage I: The distal part of the tibia is exposed, preferably using existing incisions, to produce an appropriate fasciocutaneous flap. By the use of fluoroscopy and guiding devices the correct position of the fixture in the medullary canal is found. The canal is reamed step by step to a proper diameter to facilitate insertion of the implant. If the bone quality is poor, as determined by the operating surgeon, autologous bone graft from the iliac crest and/or the medullary canal is used. T
Conditions Studied
Interventions
- DEVICE OPRA
Study Locations (2)
Maryland
- Orhopaedic Surgery Service, Walter Reed National Military Medical Center — Bethesda
Pennsylvania
- Department of Orthopaedic Surgery and Department of Anesthesiology & Critical Care Penn Medicine University City — Philadelphia
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 30 participants |
| Start Date | 2025-05-20 |
| Est. Completion | 2030-04-30 |
| Phase | NA |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT06636136
The ClinicalTrials.gov registry entry for NCT06636136 describes a study currently listed as recruiting. It is categorized as NA, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 30 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Walter Reed National Military Medical Center, which has 73 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Amputation; Traumatic, Leg, Lower appearing as the primary indexed condition, and to 1 intervention — of which OPRA is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT06636136 reports 2 study locations spanning 2 distinct geographic areas — top geographies include Maryland, Pennsylvania. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT06636136 about?
NCT06636136 is a clinical study titled "Transtibial Osseointegration". Purpose: Aim 1: Quantify soft tissue complications and infections of service members with transtibial amputations treated with OPRA OI and compare them to transfemoral OI service members. Aim 2: Compare the validated domains, such as functional, quality of life and pain scores, from the preoperati...
What is the current status of trial NCT06636136?
This trial is currently recruiting. It is a NA study. The enrollment target is 30 participants. The study started on 2025-05-20. Estimated completion is 2030-04-30.
What conditions does trial NCT06636136 study?
This clinical trial studies the following conditions: Amputation; Traumatic, Leg, Lower. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT06636136?
The interventions under investigation include: OPRA (DEVICE). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT06636136?
This trial is sponsored by Walter Reed National Military Medical Center, which has 73 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT06636136 being conducted?
This trial has 2 study locations across Maryland, Pennsylvania. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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