Study compares Clinical outcomes of Anatomic single vs. doub
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A Study was conducted to compare the clinical outcomes of anatomic single-bundle (SB) to anatomic double-bundle (DB) anterior cruciate ligament reconstruction (ACLR). It was hypothesized that anatomic DB ACLR would result in better International Knee Documentation Committee Subjective Knee Form (IKDC-SKF) scores and reduced anterior and rotatory laxity compared to SB ACLR.

Participants had to be active between the ages of 14 and 50 and present within 12 months of their injury. Individuals with a previous knee injury or surgery, a grade 1 concomitant knee ligament injury, or ACL insertion sites less than 14 mm or greater than 18 mm were exempt.

The subjects were randomly assigned to either SB or DB ACLR with a 10 mm-wide quadriceps tendon autograft harvested with a patellar bone block, and they were monitored for 24 months.

The primary outcome measures included the IKDC-SKF and KT-1000 and pivot shift tests. Other secondary outcomes included measures of sports activity and participation, range of motion (ROM) and re-injury.

--Enrollment in the study was suspended due to patellar fractures related to harvest of the patellar bone plug.

--At that time, 57 subjects had been randomized (29 DB) and two-year follow-up was attained from 51.

--At 24-month follow-up there were no between-group differences detected for the primary outcomes.

--21 DB’s and 20 SB’s reported returning to pre-injury sports 2 years after surgery (n.s) 3 subjects (2 DB’s, 5.3% of total) sustained a graft rupture and 5 individuals (4 SB’s, 8.8% of total) had a subsequent meniscus injury.

Conclusively, there were no detectable differences in clinical outcome between anatomic SB and DB ACLR when performed with a quadriceps tendon autograft with a bone block in individuals with ACL insertion sites that range from 14 to 18 mm.