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The present study was aimed to investigate the kinematics differences between round-tunnel (ROT) and flat-tunnel (FLT) techniques and compare the influence to the anterior root of lateral meniscus (ARLM ) in anterior cruciate ligament (ACL) reconstruction when using hamstring graft.
Nine matched pairs of fresh-frozen cadaveric knees were evaluated for the kinematics of intact, ACL-sectioned, and either ROT or FLT reconstructed knees. The graft bundles for FLT technique were separately tensioned. A 6 degrees of freedom robotic system was used to assess knee laxity: (1) 134-N anterior tibial load at 0°, 15°, 30°, 60°, and 90°of knee flexion. (2) 10-Nm of valgus torque followed by 5-Nm of internal rotation torque simulates a pivot-shift test at 15°, 30°. (3) 5-Nm internal and external rotation torques at 0°, 15°, 30°, 60°, and 90°. (4) 10-Nm varus and valgus torques at 15°, 30°. Coverage of ACL tibial footprint and areas of ARLM attachment before and after reaming were measured using three-dimensional isotropic MRI scanning.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| ROT-Group | Other | reamed with round tunnel |
|
| FLT-Group | Experimental | reamed with flat tunnel |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| round tunnel | Procedure | reamed with round tunnel |
| |
| flat tunnel |
| Measure | Description | Time Frame |
|---|---|---|
| simulated pivot-shift test | 10-Nm of valgus torque followed by 5-Nm of internal rotation torque simulates a pivot-shift test at 15°, 30° of knee flexion | within 1 hour after surgery |
| simulated KT-2000 arthrometer | 134-N anterior tibial load simulates a KT-2000 arthrometer at 0°, 15°, 30°, 60°, and 90°of knee flexion | within 1 hour after surgery |
| internal and external rotation | 5-Nm internal and external rotation torques at 0°, 15°, 30°, 60°, and 90° of knee flexion | within 1 hour after surgery |
| varus and valgus | 10-Nm varus and valgus torques at 15°, 30°of knee flexion | within 1 hour after surgery |
| average percentage of ACL tibial footprint coverage | Coverage of ACL tibial footprint and areas of ARLM attachment before and after reaming were measured using three-dimensional isotropic MRI scanning post-operation | within 1 hour after surgery |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| jiahao zhang, M.D. | Contact | 13001108061 | jiahaozhang_pkmu@163.com |
| Name | Affiliation | Role |
|---|---|---|
| yingfang ao, M.D. | Peking University Third Hospital | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Peking university third hospital | Recruiting | Beijing | Beijing Municipality | 100191 | China |
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| ID | Term |
|---|---|
| D000070598 | Anterior Cruciate Ligament Injuries |
| ID | Term |
|---|---|
| D007718 | Knee Injuries |
| D007869 | Leg Injuries |
| D014947 | Wounds and Injuries |
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Nine matched-paired fresh frozen human cadaveric knees were randomly distributed into two groups: Flat-tunnel (FLT) group and round-tunnel (ROT) group. One knee from each pair was reamed with flat tunnel, while the contralateral knee was reamed with round tunnel.
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| Procedure |
reamed with flat tunnel |
|