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A Nanoscopic Second Look Into the Knee Joint

11 de julio de 2026 actualizado por: Angelina Vera MD

A Nanoscopic Second Look Into the Knee Joint, What Have We Learned?

The goal of this clinical trial is to look at how well different surgeries heal over time in patients that have previously undergone arthroscopic knee interventions. These procedures may include cartilage repair or grafting, meniscus repair or trimming, ligament reconstruction, cartilage smoothing, and treatments such as amniotic tissue or platelet rich plasma (PRP).

Using a very small camera called a nanoarthroscope, doctors will take a "second look" inside the knee after surgery to see how it has healed. These findings will be compared to patient-reported outcomes, such as pain and function scores, as well as images taken during the original surgery.

The goal is to determine whether this second look provides useful information that can help guide recovery and future care.

Descripción general del estudio

Estado

Reclutamiento

Condiciones

Descripción detallada

The purpose of this study is to examine the healing potential and mid to long term outcomes of various orthopaedic surgical interventions within the knee joint through a novel modality, bedside nanoarthroscopy. These interventions include but are not limited to: autocartilage grafting, biocartilage grafting, meniscus repair, partial meniscectomy, ligament reconstruction, chondroplasty, as well as amnion placement and platelet rich plasma injection. The "second look" nanoscopic outcomes will be compared to the gold standard patient reported outcome measures as well as time of surgery arthroscopic images.

The individuals recruited for the study will participate in one single clinic visit which will entail a nanoscopic evaluation of their knee. Patients will be asked to fill out a standardized battery of validated patient reported outcome measure surveys and will be consented to undergo a "nanoscopic second look" into their knee joint using a nanoscope in the clinic setting. This procedure involves inserting a nanoscopic camera into the knee joint for diagnostic purposes. The nanoscope is no larger than an 18-gauge needle which is routinely used in clinic and hospital settings to deliver injections and perform arthrocentesis.

For the patients who agree to participate, the following information will be collected from them and from chart review. Injury, procedure performed, date of procedure, and time since procedure. Key images from preoperative MRI will also be accessed along with arthroscopic images from the time of surgery. Nanoscopic images and patient reported outcome measures as described above will also be collected and secured.

Using a comparison of key slices of preoperative MRI, time of surgery arthroscopic images, and nanoscopic second look images, a percentage of healing will be estimated and recorded. This number will then be compared against scores on the patient reported outcome surveys. This will be repeated for all patients enrolled in the study and statistical analysis will be performed to determine if there is a correlation between patient reported outcome scores and percentage of healing at nanoscopic second look.

Secondary outcomes will also be analyzed including success/failure of any biologic augmentation type procedures such as cartilage allograft or autograft and/or amniotic membrane use by comparing time of surgery images to nanoscopic second look images

It will take approximately 2 years to enroll all study subjects and approximately 3 years to complete this study.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

15

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Copia de seguridad de contactos de estudio

Ubicaciones de estudio

    • Nevada
      • Las Vegas, Nevada, Estados Unidos, 89102
        • Reclutamiento
        • University Medical Center of Southern Nevada
        • Contacto:
        • Contacto:
        • Investigador principal:
          • Angelina Vera, MD, FAAOS, FAANA
        • Sub-Investigador:
          • Christopher J Yergensen, MD

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

  • Adulto
  • Adulto Mayor

Acepta Voluntarios Saludables

No

Descripción

Inclusion Criteria:

  • Adults aged 18 years and older who have undergone or are scheduled to undergo arthroscopic knee intervention.
  • Eligible procedures include meniscus repair, biocartilage procedures, and other arthroscopic biologic interventions of the knee
  • Ability to understand and provide informed consent
  • Agreement to undergo postoperative in-clinic second-look nanoscopic arthroscopy of the knee.

Exclusion Criteria:

  • Refusal to undergo postoperative in-clinic second-look nanoscopic arthroscopy of the knee.
  • Inability to provide informed consent.
  • Individuals who are not yet adults (infants, children, teenagers).
  • Pregnant women
  • Prisoners

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Diagnóstico
  • Asignación: N / A
  • Modelo Intervencionista: Asignación de un solo grupo
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Postoperative Nanoscopic Knee Evaluation
Participants who consent will undergo an in-clinic postoperative nanoscopic arthroscopy of the knee at a routine follow-up visit. Images obtained during nanoscopic evaluation will be compared with preoperative MRI and intraoperative arthroscopic images to estimate healing and findings will be correlated with patient-reported outcome measures.
Participants who agree to participate will undergo a postoperative in-clinic nanoscopic arthroscopy of the knee at a routine follow-up visit. A small nanoscope will be inserted into the knee joint in a clinic setting to obtain images that will be used for comparison to the arthroscopic images taken from their surgery and preoperative MRI images. The estimated healing will then be recorded and compared with patient reported outcome survey scores.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Correlation between Estimated Percentage Meniscal Healing at Second Look Nanoscopic Arthroscopy and PROMIS Score.
Periodo de tiempo: From baseline (preoperative assessment) to the postoperative second-look nanoscopic arthroscopy visit (3 to 24 months after the index meniscal repair procedure).
The primary outcome measure is the correlation between estimated meniscal repair healing and change from baseline in PROMIS Physical Function T-Score. Meniscal healing will be assessed using postoperative second-look nanoscopic arthroscopy images obtained 3 to 24 months after the index procedure. The Principal Investigator or delegated trained investigator will visually estimate healing of the original repair site from 0% to 100%, where 0% indicates no observable healing and 100% indicates complete healing with continuous, stable tissue bridging. PROMIS Physical Function will be assessed using the PROMIS Bank v2.0 Physical Function CAT at baseline and at the postoperative nanoscopic visit. The relationship between estimated healing percentage and PROMIS Physical Function T-Score change will be assessed using Spearman's rank correlation coefficient.
From baseline (preoperative assessment) to the postoperative second-look nanoscopic arthroscopy visit (3 to 24 months after the index meniscal repair procedure).

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Estimated Percentage Healing Based on Comparison of Preoperative MRI Intraoperative Arthroscopic Images and Postoperative Nanoscopic Images.
Periodo de tiempo: From the index procedure to postoperative second-look nanoscopic arthroscopy visit (3 to 24 months after the index procedure).
The secondary outcome measure is the estimated percentage of meniscal repair healing based on side-by-side review of intraoperative arthroscopic images and postoperative second-look nanoscopic arthroscopy images. Images will be reviewed by the Principal Investigator or delegated trained investigator using protocol-defined healing criteria. Healing will be visually estimated as the proportion of the original meniscal repair site demonstrating healing and recorded as a percentage from 0% to 100%, where 0% indicates no observable healing and 100% indicates complete healing. Healing percentage will be calculated at the postoperative second-look nanoscopic arthroscopy visit, occurring 3 to 24 months after the index procedure.
From the index procedure to postoperative second-look nanoscopic arthroscopy visit (3 to 24 months after the index procedure).

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Colaboradores

Investigadores

  • Investigador principal: Angelina Vera, MD, FAAOS, FAANA, University Medical Center of Southern Nevada

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Publicaciones Generales

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

20 de mayo de 2026

Finalización primaria (Estimado)

20 de mayo de 2028

Finalización del estudio (Estimado)

20 de mayo de 2029

Fechas de registro del estudio

Enviado por primera vez

17 de junio de 2026

Primero enviado que cumplió con los criterios de control de calidad

11 de julio de 2026

Publicado por primera vez (Actual)

17 de julio de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

17 de julio de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

11 de julio de 2026

Última verificación

1 de julio de 2026

Más información

Términos relacionados con este estudio

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

NO

Descripción del plan IPD

Individual participant data will not be shared outside of the study team.

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

producto fabricado y exportado desde los EE. UU.

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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