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Status unknownNCT04556812Updated Sep 21, 2020

Adults Habitual Patellar Dislocation:a Multiple-center Clinical Investigation Regarding Diagnosis and Therapeutic Strategy

An interventional study of Four-in-one procedure and soft-tissue surgery in Habitual Patellar Dislocation, sponsored by Hui Zhang. Status unknown. Open to participants aged 14 Years and older. Per ClinicalTrials.gov, last updated 2020-09-21.

Sponsored by Hui Zhang · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Sep 2020), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
120
Allocation
Non-randomized
Ages
14 Years and older
Sex
All
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Study summary

Adult habitual dislocation of the patella is a common dislocation of the patella. The range of lesions is wide and the severity is high. Clinical diagnosis and treatment are difficult. In clinical work, misdiagnosis and treatment are not targeted at pathological mechanisms. This leads to irregular diagnosis and treatment, high failure rate and revision rate, and patients undergoing multiple operations. The project team developed a "four-in-one" surgical technique centered on "tibial tuberosity osteotomy and proximal displacement" in the preliminary research, which overcomes the disadvantages of traditional knee extension surgery and is suitable for adults. Early research Shows safe and effective clinical efficacy. The purpose of this application project is to take independent innovation of core surgical technology as the lead, adopt a two-way cohort study method, compare the clinical efficacy of the new "four-in-one" technology and traditional soft tissue surgery in the treatment of adult habitual patellar dislocation, and analyze and formulate adult habituation Comprehensive and systematic solutions for patella dislocation, relying on this scientific research project to conduct multi-center and large-sample clinical case studies, and evaluate the effectiveness and safety of independent innovative technologies through standardized medical research methods to improve the surgical treatment of adult habitual patella dislocation Success rate, reduce recurrence rate and failure rate, improve the level of clinical treatment of the disease, and finally put forward a special clinical diagnosis and treatment system for the disease in the international academic community.

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Conditions studied

  • Habitual Patellar Dislocation

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03

In context

Patellar Dislocation

41 studies on the registry are indexed under Patellar Dislocation; 9 are open to participants now.

This study's planned enrollment of 120 is above the median of 50 across 22 interventional studies indexed under Patellar Dislocation.

Browse Patellar Dislocation studies →

Lead sponsor

This is the only study on the registry with Hui Zhang as lead sponsor.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
14 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients with habitual dislocation of the patella over 14 years old
  • agree to participate in the study

Exclusion criteria

Exclusion Criteria:

  • Combined with other knee ligament injuries
  • recurrent patellar dislocation
  • Skin and soft tissue conditions do not allow surgery
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
120 participants (estimated)

Study arms

  • Experimental
    Study group

    underwent "four-in-one" surgical technique centered on "tibial tuberosity osteotomy and proximal displacement"

    Procedure: Four-in-one procedure

  • Placebo comparator
    Control group

    traditional soft tissue surgery

    Procedure: soft-tissue surgery

Interventions

  • ProcedureFour-in-one procedure

    "four-in-one" surgical technique centered on "tibial tuberosity osteotomy and proximal displacement"

  • Proceduresoft-tissue surgery

    traditional soft-tissue surgery

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What researchers measure

Primary outcomes

  1. Kujala score

    A functional score used to assess the knee function

    Time frame: 1 year postoperatively

  2. quadriceps strength

    quantify the quadriceps strength using Biodex®

    Time frame: 1 year postoperatively

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Study locations

No study locations are listed for this record.

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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 21, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04556812
Lead sponsor
Hui Zhang
Responsible party
Hui Zhang (Doctor of Sports Medicine Service of Beijing Jishuitan hospital, Beijing Jishuitan Hospital) — Sponsor-investigator
First posted
Sep 21, 2020
Start date
Oct 1, 2020 (estimated)
Primary completion
Jun 30, 2022 (estimated)
Completion
Jun 30, 2023 (estimated)
Last update
Sep 21, 2020

Study contacts

Zhijun Zhang, M.D.
Contact
zzj5285029@163.com
+86 15201277648
Hui Zhang
study director · Sports Medicine Service, Beijing Jishuitan hospital

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Sep 2020. You cannot join it, but the record below documents what was studied.

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