NCT04454593

Brief Summary

This study evaluates whether the patellar axial radiograph of lateral patellar curvature angle （LPCA）with knee flexion at 30 ° can be used as a new diagnostic surrogate of lateral patellar compression syndrome（LPCS）. We believe that the new index LPCA has high sensitivity and specificity in initial diagnosis of LPCS using axial patellar radiograph with knee flexion at 30 ° , and has high application value.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
87

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Mar 2020

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

March 22, 2020

Completed
1 month until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 22, 2020

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

May 22, 2020

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

June 29, 2020

Completed
2 days until next milestone

First Posted

Study publicly available on registry

July 1, 2020

Completed
Last Updated

July 1, 2020

Status Verified

June 1, 2020

Enrollment Period

1 month

First QC Date

June 29, 2020

Last Update Submit

June 30, 2020

Conditions

Lateral Patellar Compression Syndrome

Keywords

Lateral patellar compression syndromeLateral patellar curvature anglePatellar axial radiographsThe area under the curve

Outcome Measures

Primary Outcomes (1)

  • lateral patellar curvature angle

    lateral patellar curvature angle in three groups was compared

    between 2016 and 2019

Study Arms (3)

Lateral patellar compression syndrome

Patients diagnosed with lateral patellar compression syndrome between February 2016 and April 2019

Other: no intervention

patellar dislocation

Patients diagnosed with patellar dislocation between February 2016 and April 2019

Other: no intervention

meniscus tear

Patients diagnosed with meniscus tear between February 2016 and April 2019

Other: no intervention

Interventions

no interventionOTHER

This is an observation study,with no intervention

Lateral patellar compression syndromemeniscus tearpatellar dislocation

Eligibility Criteria

Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

We enrolled 87 patients between 2016 and 2019 and divided them as per diagnosis into three groups of 29 each: LPCS, patellar dislocation (PD, control), and meniscus tear (MT, negative control) groups.

You may qualify if:

  • Patients were diagnosed as LPCS ，MT and PD respectively

You may not qualify if:

  • patients with ligament injury, malunion of patella fracture, free bodies in the joint, surgical contraindications, and with both knees affected.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Peking University Third Hospital

Beijing, Beijing Municipality, 100191, China

Location

Study Officials

  • Yang Yu-ping

    Peking University Third Hospital

    STUDY CHAIR

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 29, 2020

First Posted

July 1, 2020

Study Start

March 22, 2020

Primary Completion

April 22, 2020

Study Completion

May 22, 2020

Last Updated

July 1, 2020

Record last verified: 2020-06

Data Sharing

IPD Sharing
Will not share

Locations

CN(1)