E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Total knee arthroplasty has become one of the most frequent surgical procedures in the world. Currently models employ high volume local infiltration analgesia (LIA) techniques. The genicular nerve block (GNB) appears as an alternative due to the success that has been obtained in the ablative treatment in pain clinics. The objective of this study is to evaluate the analgesic results of GNB after TKA in comparison with a group that received the usual technique (high volume LIA). |
La artroplastia total de rodilla (ATR) es uno de los procedimientos quirúrgicos más frecuentes en el mundo. Actualmente se emplean técnicas de analgesia de infiltración local de gran volumen (LIA). El bloqueo de los nervios geniculares (GNB) ha aparecido como una alternativa tras el éxito obtenido en el tratamiento ablativo en el dolor crónico. El objetivo es evaluar la analgesia obtenida tras el GNB después de la ATR en comparación con aquellos pacientes que reciben la técnica habitual (LIA). |
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E.1.1.1 | Medical condition in easily understood language |
The genicular nerve block is an alternative to analgesic management in total knee arthroplasty (local infiltration analgesia). The objective is to compare analgesic efficacy of both techniques. |
El bloqueo de los nervios geniculados es una alternativa a la infiltración local analgésica en la artroplastia total de rodilla. El objetivo es comparar la eficacia analgésica de ambas técnicas. |
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E.1.1.2 | Therapeutic area | Analytical, Diagnostic and Therapeutic Techniques and Equipment [E] - Anesthesia and Analgesia [E03] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The main objective is to verify that the ultrasound-guided blockade of the genicular nerves is not inferior in terms of analgesic efficacy in comparison with the LIA in the first 24 hours of the postoperative period of primary TKR and during the first mobilization using the NRS score. |
El objetivo principal es comprobar que el bloqueo ecoguiado de los nervios geniculados es capaz de proporcionar una analgesia no inferior a la obtenida con la LIA en pacientes sometidos a ATR primaria en las primeras 24 horas del postoperatorio y durante la primera movilización utilizando la puntuación NRS. |
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E.2.2 | Secondary objectives of the trial |
The secondary objectives are to evaluate that the consumption of rescue opioids and the range of joint mobility are not inferior in those patients who have received the genicular nerve block in comparison with those who have received the LIA. |
Los objetivos secundarios son comparar que el consumo de opioides de rescate y el rango de movilidad articular son no inferiores en aquellos pacientes que hayan recibido bloqueo de los nervios geniculados respecto a los que hayan recibido la LIA. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• Subjects undergoing TKR with informed written consent. • ASA physical status I-III • BMI 18-40 kg/m2. |
• Todo paciente sometido a artroplastia total primaria de rodilla que de su consentimiento para participar en el estudio. • Clasificación de la ASA physical status I-III. • IMC 18-40 kg/m2. |
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E.4 | Principal exclusion criteria |
• Patients who refuse the performance of the block or who refuse to give their consent or who do not have the capacity to collaborate with compliance with the protocol. • General anesthesia. • Age under 18 or over 90 years. • Patients who undergo bilateral arthroplasty, revision arthroplasties or prosthetic replacements. • Contraindication for peripheral nerve block (local infection, neurological deficit, complex regional syndrome, previous trauma or ipsolateral knee surgery). • Systemic infection. • Opioid consumption during the last 4 weeks in doses higher than 30 mg oral morphine or equivalent). • Patients with hemorrhagic diathesis or coagulopathy (diagnosis by clinical or laboratory history). • Patients with allergies to any medication that is part of the protocol (for example, allergy to local anesthetics). |
• Pacientes que rechacen la realización del bloqueo, que se nieguen a dar su consentimiento o que no tengan capacidad para colaborar con el cumplimiento del protocolo. • Anestesia general. • Edad menor a 18 años o mayor a 90 años. • Pacientes que se sometan a artroplastia bilateral, artroplastias de revisión o recambios protésicos. • Contraindicación para un bloqueo nervioso periférico (infección local, déficit neurológico, síndrome regional complejo, trauma previo o cirugía en la rodilla ipsilateral). • Infección sistémica. • Consumo de opioides durante las últimas 4 semanas en dosis mayores a 30 mg de morfina oral o equivalente). • Pacientes con diátesis hemorrágica o coagulopatía (diagnóstico por historia clínica o laboratorio). • Pacientes con alergias a cualquier medicamento que sea parte del protocolo (por ejemplo, alergia a anestésicos locales). |
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E.5 End points |
E.5.1 | Primary end point(s) |
NRS at 24 hours after surgery. |
NRS a las 24 horas después de la cirugía. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
1. NRS at the Post-anesthesia care unit (PACU) after spinal block reversal, evaluated as genuflection of contralateral knee in 90 degrees. 2. NRS at 12 hours after surgery. 3. NRS after first mobilization. 4. Need for rescue opioids and dose of rescue drugs (mg morphine / mg methadone / mg tramadol) 5. Mobility range (maximum flexion / maximum extension) during the first mobilization. |
1. NRS en la unidad de reanimación post anestésica (URPA) post reversión bloqueo espinal, evaluado como genuflexión de rodilla contralateral en 90 grados. 2. NRS a las 12 horas después de la cirugía. 3. NRS posterior a la movilización 4. Rescate Opioides y dosis de fármacos de rescate (mg morfina/mg metadona/mg tramadol) 5. Rango movilidad (máxima flexión/máxima extensión) durante la primera exploración |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1. After spinal block reversal. 2. At 12 hours after surgery. 3. After first mobilization. 4. During the hospitalization. 5. During the first mobilization. |
1. Post reversión bloqueo espinal. 2. A las 12 horas después de la cirugía. 3. Tras la primera movilización. 4. Durante la hospitalización. 5. Durante la primera mobilización.
1. After spinal block reversal. 2. At 12 hours after surgery. 3. After first mobilization. 4. During the hospitalization. 5. During the first mobilization. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | Yes |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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LVLS |
Última entrada en el estudio del último paciente. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | |
E.8.9.1 | In the Member State concerned months | 3 |
E.8.9.1 | In the Member State concerned days | |