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Remnant Preservation and Tibial Tunnel Widening After ACL Reconstruction

Remnant Preservation in Anterior Cruciate Ligament Reconstruction: Does Stump Suturing Reduce the Risk of Tibial Tunnel Widening? A CT-Based Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07236593
Enrollment
190
Registered
2025-11-19
Start date
2021-07-01
Completion date
2024-03-30
Last updated
2025-11-19

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

Conditions

Anterior Cruciate Ligament Injury

Brief summary

Anterior Cruciate Ligament (ACL) reconstruction is one of the most commonly performed orthopedic procedures. Tibial tunnel widening is a recognized postoperative complication that may affect graft stability and long-term outcomes. Recent studies have suggested that preserving the ACL remnant may improve biological healing and reduce tunnel widening, but the evidence remains inconclusive. This prospective randomized study aims to evaluate whether remnant (stump) preservation and suturing during ACL reconstruction can reduce the risk of tibial tunnel widening compared with the conventional stump-resection technique. A total of 190 patients with recent ACL tears (\<6 months) were randomly assigned into two equal groups: Group A underwent arthroscopic ACL reconstruction with remnant suturing, while Group B underwent standard reconstruction with stump resection. All patients were followed for 12 months postoperatively with serial CT evaluations to assess tunnel diameters and positioning.

Interventions

PROCEDUREStump-Suturing ACL Reconstruction

Patients in this group undergo arthroscopic ACL reconstruction with preservation and suturing of the native ACL remnant (stump) around the graft. The technique aims to enhance graft revascularization and biological healing, potentially reducing tibial tunnel widening.

PROCEDUREStump-Resection ACL Reconstruction

Patients in this group undergo standard arthroscopic ACL reconstruction with complete resection of the ACL remnant (stump) prior to graft placement. This represents the conventional surgical approach for ACL reconstruction.

Sponsors

Cairo University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Age between 18 and 45 years * Acute ACL injury (\<6 months) * Medically fit for surgery

Exclusion criteria

* Age \<18 or \>45 years * Old or chronic ACL injuries (\>6 months) * Multi-ligamentous knee injuries * Failed previous ACL reconstruction * Associated mal-alignment deformities * Absence of identifiable ACL stump

Design outcomes

Primary

MeasureTime frame
Rate of Tibial Tunnel Enlargement12 months postoperatively

Secondary

MeasureTime frame
Percentage of Tibial Tunnel Enlargement12 months
Tibial Tunnel Positioning (X & Y coordinates)2 Weeks
Femoral Tunnel Diameter Change12 months
Femoral Tunnel Positioning (X & Y coordinates)2 Weeks

Countries

Egypt

Outcome results

None listed

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