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A Clinical Trial of the Round-tunnel and Flat-tunnel Technique of ACL Reconstruction

A Randomized, Controlled, Multi-center Clinical Trial of the Round-tunnel and Flat-tunnel Technique of Anterior Cruciate Ligament (ACL) Reconstruction

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04953676
Enrollment
144
Registered
2021-07-08
Start date
2021-09-01
Completion date
2024-09-01
Last updated
2021-07-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anterior Cruciate Ligament Rupture

Brief summary

This study intends to perform round-tunnel and flat-tunnel ACL reconstruction technique in 144 patients, and compare the clinical outcomes of the two surgical procedures through follow-up.

Detailed description

This is a prospective randomized, controlled, multi-center clinical trial study on ACL reconstruction surgery technique. It is jointly undertaken by the Peking University Third Hospital, Nanjing Drum Tower Hospital, Zhengzhou Orthopaedic Hospital, and Shenzhen Second People's Hospital. Peking University Third Hospital is the team leader unit. In this study, 144 patients with ACL rupture were recruited according to the enrollment criteria. Among them, 54 patients with ACL rupture were recruited and carried out by the Peking University Third Hospital. The recruited patients were randomly divided into groups. The ratio of the control group is 1:1. Each of the other three hospitals recruited 30 patients and randomly grouped them according to the same enrollment criteria. The ratio of the experimental group to the control group was also 1:1. In this study, 72 patients with ACL rupture in the experimental group will be treated with flat-tunnel reconstruction technique, and 72 patients with ACL rupture in the control group will be treated with round-tunnel technique. All operations will be performed with autologous hamstring tendons. After reconstruction, all subjects will participate in the collection of clinical function scores including Tegner score, Lysholm score, IKDC score, and clinical evaluation including physical examination, joint laxity, CT and MRI imaging analysis to verify ACL Advantages of flat-tunnel technique.

Interventions

PROCEDUREround tunnel technique

Both the femoral tunnel and tibial tunnel were drilled by 8-mm cannulated drill

PROCEDUREflat tunnel technique

Both the femoral tunnel and tibial tunnel were dimension of 5×11-mm rounded-rectangular, which was created by initially drilling a round tunnel with a 5-mm cannulated drill and reshaped by use of a bone rasp and custom-made dilator.

Sponsors

The Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School
CollaboratorOTHER
Zhengzhou Orthopaedic Hospital
CollaboratorUNKNOWN
Shenzhen Second People's Hospital
CollaboratorOTHER
Peking University Third Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
No

Inclusion criteria

* For the first time, the knee joint simply ruptures the anterior cruciate ligament (ACL) and requires surgical reconstruction; it can be combined with meniscus injury, and the Outerbridge injury score is ≤ Grade II; There is no history of trauma or fracture of the ipsilateral knee joint; Posterior Cruciate Ligament (PCL) has no damage; Medial Collateral Ligament (MCL) or Lateral collateral ligaments (LCL) has no damage or only slight damage (no more than I degree).

Exclusion criteria

* BMI is less than 18.5 or greater than 35 kg/m2; Patients with moderate or severe knee degeneration; Those with limited flexion angle (\<120 degrees); The cartilage defect area is greater than 2 cm2 or the Outerbridge damage score is\> Grade II.

Design outcomes

Primary

MeasureTime frameDescription
KT-20006 months, 12 months, 24 monthsside-to-side difference

Secondary

MeasureTime frameDescription
Tegner Score6 months, 12 months, 24 monthsfunctional scores
Lysholm Score6 months, 12 months, 24 monthsfunctional scores
IKDC Score6 months, 12 months, 24 monthsfunctional scores
Lachman test6 months, 12 months, 24 monthsphysical examination
Pivot-shift test6 months, 12 months, 24 monthsphysical examination

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026