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RecruitingNCT06608394Updated Feb 12, 2025

Effect of Preoperative Exercise Habits on Knee Function and Recurrence Rate After Anterior Cruciate Ligament Reconstruction

An observational study in Anterior Cruciate Ligament Rupture, sponsored by Peking University Third Hospital. Recruiting at 1 site in China. Open to participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2025-02-12.

Sponsored by Peking University Third Hospital · Observational

From the registry’s dates

  • Primary completion was expected by Dec 2025, 10 months ago, but the record still lists the study as recruiting.
  • Started Nov 2024; still recruiting 1 year 11 months later.

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Study type
Observational
Model
Cohort
Time perspective
Other
Enrollment
361
Ages
18 Years to 45 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-15

Among 33 studies in Anterior Cruciate Ligament Injuries by Peking University Third Hospital — 11 open to participants now, 12 under way, none of them phase 3. Anterior Cruciate Ligament Injuries · Peking University Third Hospital.

Planned enrollment
Largest of 14
361 · median 115
Started
2024
with 2 others
Observational
14 of 33
4 open now
Primary completion
2025-12
later than 2 of 11 live
Registered
26th of 33
by date

Among the 33 studies in Anterior Cruciate Ligament Injuries by Peking University Third Hospital, this one has the largest planned enrollment of the 14 observational ones that give a count, is one of 3 that started in 2024, is one of 14 observational ones, reaches primary completion later than 2 of the 11 other live ones, and was the 26th registered.

Anterior Cruciate Ligament Injuries

625 studies on the registry are indexed under Anterior Cruciate Ligament Injuries; 192 are open to participants now.

Browse Anterior Cruciate Ligament Injuries studies →

Open to participants now

11 of the 33 studies in Anterior Cruciate Ligament Injuries by Peking University Third Hospital are open now, in 1 country. Recruiting first, the newest first:

5 more — sign in →

By country, each count listing its studies:

All 11 open studies →

Where they have run

Who these studies take

Of the 122 Anterior Cruciate Ligament Injuries studies recruiting now, 27 (22%) set no upper age limit and 92 (75%) stop at 75 or younger; 46 take children under 18; 21 take healthy volunteers.

This study: 18 Years to 45 Years · all sexes · no healthy volunteers.

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02

Study summary

The aim of this study is to compare the knee function between patients with and without preoperative exercise habits at 1, 2 and 5 years after ACL surgery, and further analyze the effect of maintaining exercise habits on knee function and recurrence rate

Read the detailed description

Objective:

  1. To compare the knee function between active and inactive patients at 1, 2, and 5 years after ACL surgery.
  2. To investigate the difference of knee function and recurrence rate between patients with and without postoperative exercise habit.

Methods: This is a single-center, controlled follow-up cohort study. Inclusion criteria included patients aged 18-45 years with confirmed ACL injury who were scheduled to undergo ACL reconstruction surgery. Exercise habits were recorded before operation, and knee joint function and exercise level were evaluated by questionnaires. All patients received standardized ACL reconstruction surgery and rehabilitation program after surgery. In prospective cohort study, 121 patients were divided into running group and non-running group according to their preoperative exercise habits. At 3 months after surgery, running was included in the rehabilitation program, and the patients were further divided into postoperative running and non-running groups and followed up for one year.In Postoperative cohort study, follow-up was collected and evaluated at 1 year, 2 years and 5 years, including knee function, exercise level and recurrence. The study was divided into four groups: preoperative running group , preoperative non-running group , preoperative and postoperative running group and preoperative non-running and postoperative running group to analyze the effects of preoperative and postoperative exercise habits on knee joint function and recurrence rate. The results of this study will help to deepen the understanding of the impact of preoperative exercise habits and postoperative exercise maintenance on knee function and recurrence rate after ACL reconstruction, and then provide guidance for clinical practice, optimize postoperative rehabilitation programs, and ultimately improve the quality of life of patients.

Subjects: Patients with anterior cruciate ligament rupture in Department of Sports Medicine, Peking University Third Hospital 1.1.1 Inclusion criteria

  1. Age of 18-45 years old, male or female.
  2. Patients were diagnosed with anterior cruciate ligament injury and planned to undergo anterior cruciate ligament reconstruction surgery 1.1.2 Exclusion criteria Presence of other severe knee disorders (e.g., arthritis).

    • Prior history of other knee surgeries
    • Inability to complete a postoperative rehabilitation program or long-term follow-up.
03

Conditions studied

  • Anterior Cruciate Ligament Rupture

Keywords

  • anterior cruciate ligament injuries
  • exercise habit
04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

An ACL injury was diagnosed and an ACL reconstruction surgery was planned

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 anterior cruciate ligament rupture in Department of Sports Medicine, Peking University Third Hospital

Exclusion criteria

Exclusion Criteria:

  • Severe other knee disorders (e.g., arthritis) are present.
  • Prior history of other knee surgeries
  • Inability to complete a postoperative rehabilitation program or long-term follow-up
05

Study design

Observational model
Cohort
Time perspective
Other
Enrollment
361 participants (estimated)
Patient registry
No

Groups and cohorts

  • Preoperative exercise habits group

    Moderate-intensity aerobic exercise or strength training was performed at least 3 times per week for 6 months before surgery.

    Other: no intervention

  • No exercise habit before operation group

    There was no regular exercise habit for 6 months before surgery

    Other: no intervention

  • The exercise habit group was maintained after operation

    Moderate-intensity aerobic exercise was continued at least three times per week after surgery

    Other: no intervention

  • The exercise habit was not maintained after operation

    Did not maintain a regular exercise habit after surgery

    Other: no intervention

Interventions

  • Otherno intervention

    no intervention

06

What researchers measure

Primary outcomes

  1. Lysholm knee score

    Time frame: 1year,2year,5year

  2. IKDC score

    Time frame: 1year,2year,5year

  3. Tegner score

    Time frame: 1year,2year,5year

  4. Beighton Score

    Time frame: 1year,2year,5year

Secondary outcomes

  1. recurrence rate

    Time frame: 1year,2year,5year

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Nov 2024 (actual). Primary completion is estimated for Dec 2025, 13 months after the start.

Of 73 non-industry observational studies under Anterior Cruciate Ligament Injuries, half reached primary completion within 36 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 167. This study's planned 13 months is below that.

Counting every sponsor, half of 82 studies reached it within 37 months; a quarter within 13 and three quarters within 76.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 19, 2024
First posted
Sep 23, 2024
StartActual
Nov 30, 2024
Primary completionEst.
Dec 31, 2025
CompletionEst.
Dec 31, 2025
Last update
Feb 12, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 12, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06608394
Responsible party
Sponsor
First posted
Sep 23, 2024
Start date
Nov 30, 2024
Primary completion
Dec 31, 2025 (estimated)
Completion
Dec 31, 2025 (estimated)
Last update
Feb 12, 2025

Study contacts

Ruiqin dang
Contact
dangruiqin0919@163.com
19261022008
Jianquan wang
Contact
wjqsportsmed@163.com
13801076267

Oversight

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

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