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Técnicas endoprotéticas de joelho assistidas por robótica versus convencionais (ROCKETS)

16 de setembro de 2026 atualizado por: Olof Skoldenberg, Danderyd Hospital

ROCKETS: Técnicas de endoprótese de joelho assistida por robótica versus convencional em um estudo randomizado, multicêntrico e tolerante a preferências

Rationale for conducting the study:

The ROCKET study evaluates the clinical and economic outcomes of robot-assisted total knee arthroplasty (RTKR) compared with conventional total knee arthroplasty (TKR). The primary endpoint is the proportion of randomized participants achieving a Forgotten Joint Score (FJS) of ≥80 points at 24 months after surgery. Secondary outcomes include patient-reported knee function, health-related quality of life, self-reported instability, physical activity, radiographic alignment, surgical and technical outcomes, complications, reoperations, revisions, and health-economic outcomes.

Study design:

International multicentre, preference-tolerant, randomized, controlled superiority trial with two treatment arms comparing RTKR with conventional TKR. Participants in the randomized part are allocated 1:1. At selected centres where feasible, an optional participant-blinded randomized component may be implemented. Eligible patients who do not undergo randomization may participate in a parallel observational/preference cohort, which is analysed separately from the primary randomized comparison.

Study population:

Adults aged 18 years and older who are eligible for total knee arthroplasty according to local guidelines and who provide informed consent.

Number of patients:

Up to 1,600 randomized participants. Eligible non-randomized participants may additionally be included in the observational/preference cohort.

Primary outcome:

Proportion of randomized participants achieving FJS ≥80 points at 24 months after surgery.

Long-term follow-up:

Patient-reported and registry-based outcomes are planned at 5 and 10 years after surgery where feasible.

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Descrição detalhada

The ROCKET study is an international multicentre, prospective, preference-tolerant randomized controlled superiority trial comparing robot-assisted total knee arthroplasty with conventional total knee arthroplasty.

Participants in the randomized component are allocated 1:1 to robot-assisted or conventional total knee arthroplasty. Randomization is stratified by participating centre and sex. At selected centres where practical and approved, participants may remain blinded to treatment allocation until completion of the 24-month follow-up unless earlier unblinding is clinically required or requested by the participant. Surgeons and operating-room personnel cannot be blinded. Outcome assessment is performed blinded to treatment allocation whenever feasible.

Eligible patients who are unwilling to undergo randomization, or for whom treatment equipoise cannot be achieved, may enter a parallel observational/preference cohort. Treatment in this cohort follows patient and surgeon preference. The observational/preference cohort is analysed separately from the primary randomized comparison.

The primary endpoint is the proportion of randomized participants achieving a Forgotten Joint Score (FJS) of ≥80 points at 24 months after surgery. Follow-up includes patient-reported outcomes, activity, radiographic alignment, surgical and technical variables, complications, reoperations, revisions and health-economic outcomes. Long-term follow-up is planned at 5 and 10 years after surgery, including PROMs where available and registry-based outcomes such as reoperations, revisions, complications and mortality.

Tipo de estudo

Intervencional

Inscrição (Estimado)

1600

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Locais de estudo

      • Hässleholm, Suécia, 281 38
        • Recrutamento
        • Hässleholm Hospital
      • Stockholm, Suécia, 182 88
        • Recrutamento
        • Danderyd Hospital
        • Contato:
        • Investigador principal:
          • Olof Skoldenberg, MD, PhD

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos e mais velhos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Tudo

Descrição

Inclusion Criteria:

  • Adults aged 18 years and older.
  • Eligible for total knee arthroplasty according to local guidelines and routines.
  • Willingness to participate in the study.

Exclusion Criteria:

  • Patients with extreme malalignment necessitating special implants or techniques.
  • Patients unfit for surgery due to other medical reasons.
  • Patients who, for other reasons such as alcohol or substance abuse, are deemed unsuitable to participate in the study.
  • Patients who, for other reasons, cannot fulfil the required patient-reported outcome measures.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Solteiro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: RTKR

Robot-assisted total knee arthroplasty (RTKR).

Robot-assisted total knee arthroplasty using an approved robotic surgical system to assist intraoperative planning, bone preparation, implant positioning and balancing according to the participating centre's approved technique.

Comparador Ativo: TKR

Conventional total knee arthroplasty (TKR).

Conventional total knee arthroplasty using standard manual instrumentation according to local clinical routine.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Proportion of participants achieving a Forgotten Joint Score (FJS) ≥80 points
Prazo: 24 months after surgery

The primary endpoint is the proportion of randomized participants achieving an FJS of ≥80 points at 24 months after surgery. The FJS ranges from 0 to 100, with higher scores indicating less awareness of the replaced knee during everyday activities.

24 months after surgery

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Forgotten Joint Score (FJS), continuous score
Prazo: Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery

FJS is scored from 0 to 100, with higher scores indicating less awareness of the replaced knee.

Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery
Knee injury and Osteoarthritis Outcome Score (KOOS)
Prazo: Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery

KOOS assesses knee-related pain, symptoms, activities of daily living, sport/recreation and knee-related quality of life. Each subscale ranges from 0 to 100, with higher scores indicating better outcome.

Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery
Self-reported knee instability (ADLS items)
Prazo: Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery

Self-reported slipping/partial giving way and buckling/full giving way are assessed using items from the Activities of Daily Living Scale of the Knee Outcome Survey.

Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery
EQ-5D and EQ VAS
Prazo: Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery

Health-related quality of life is assessed using EQ-5D and EQ VAS.

Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery
Patient activity and walking distance
Prazo: Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery

Patient activity and walking distance are assessed during follow-up using the study's prespecified activity measurements.

Baseline, 6 weeks, 12 months, 24 months, 5 years and 10 years after surgery
Knee alignment
Prazo: Preoperative and approximately 6 weeks after surgery

Coronal knee alignment is assessed using long-standing radiographs, including Hip-Knee-Ankle alignment and Coronal Plane Alignment of the Knee (CPAK) classification.

Preoperative and approximately 6 weeks after surgery
Surgery time
Prazo: During the index operation

Duration of the surgical procedure is recorded in minutes.

During the index operation
Technical and intraoperative surgical outcomes
Prazo: During the index operation

Technical difficulties and prespecified intraoperative surgical details are recorded.

During the index operation
Range of motion (ROM)
Prazo: 24 months after surgery

Knee range of motion is assessed at the 24-month follow-up.

24 months after surgery
Reoperations and revisions
Prazo: Up to 24 months, with additional follow-up at 5 and 10 years

Reoperations and revisions of the index knee are recorded during the primary study period and assessed during long-term follow-up where data are available.

Up to 24 months, with additional follow-up at 5 and 10 years
Adverse events and complications
Prazo: Up to 24 months, with additional long-term assessment at 5 and 10 years

Adverse events and complications related to the index knee arthroplasty are recorded. Long-term complications may additionally be assessed using approved registry or other data sources.

Up to 24 months, with additional long-term assessment at 5 and 10 years
Mortality
Prazo: 90 days, 1 year, 5 years and 10 years after surgery

Mortality is assessed using available approved registry or other data sources.

90 days, 1 year, 5 years and 10 years after surgery
Health-economic outcomes
Prazo: Up to 24 months; exploratory long-term analyses at 5 and 10 years where data are available

Health-economic analyses include direct and indirect costs and cost-effectiveness using health-related quality-of-life data.

Up to 24 months; exploratory long-term analyses at 5 and 10 years where data are available

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Colaboradores

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

4 de março de 2024

Conclusão Primária (Estimado)

1 de dezembro de 2029

Conclusão do estudo (Estimado)

1 de dezembro de 2037

Datas de inscrição no estudo

Enviado pela primeira vez

4 de abril de 2024

Enviado pela primeira vez que atendeu aos critérios de CQ

26 de abril de 2024

Primeira postagem (Real)

29 de abril de 2024

Atualizações de registro de estudo

Última Atualização Postada (Real)

21 de setembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

16 de setembro de 2026

Última verificação

1 de setembro de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • 2024DS
  • Knee (Outro identificador: Danderyds sjukhus)

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

produto fabricado e exportado dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .