The purpose of this study is to compare double-bundle and single-bundle techniques for ACL reconstruction in a long-term 15-year follow-up. Our hypothesis is that the DB technique is better than the SB technique.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
153
DB: Two tunnels were created on the femoral side through an anteromedial portal. These tunnels were created manually. On the tibial side, the tunnels were created using a guide to ensure they matched the anatomic insertion site of the ACL at the tibia. The hamstring grafts for the procedure were then harvested from the same leg and doubled. The femoral side was fixed from the inside out, whereas the tibial side was fixed from the outside in. bioresorbable screws were used.
SB: The femoral tunnel was created using an anteromedial portal. A freehand technique was used. For the tibial tunnel, a tibial guide was used to ensure it was positioned at the midpoint of the tibial ACL attachment site. The tendons of the semitendinosus and gracilis muscles were then harvested, doubled over, and inserted through the tibial tunnel, extending into the femur, and fixed with metallic or bioabsorbable interference screws.
Department of Orthopaedics, Tampere University Hospital
Tampere, Finland
osteoarthritis (OA)
which group has more osteoarthritis? Kellgren Lawrence classification. Scale 0-4 (0=no OA)
Time frame: 15 years
Pivot shift
which group has more positive pivot shift tests? Always compared to a "healthy" knee.
Time frame: 15 years
KT-1000 arthrometer difference
Anteroposterior translation. Always compared to a "healthy" knee. mm.
Time frame: 15 years
Lysholm score
subjective evaluation form. Scale 0-100 (100=best)
Time frame: 15 years
IKDC subjective evaluation. Scale 0-100 (100=best)
subjective evaluation form
Time frame: 15 years
IKDC objective score. Scale 1-4 (1=best)
Overall evaluation of the knee
Time frame: 15 years
graft failures
which group has more graft failures? The number of graft failures was assessed by revision surgery.
Time frame: 15 years
Range on motion (ROM) of the knee
Which group has more lack of knee extension or lack of knee flexion? Injured knee is always compared to a contralateral "healthy" knee. Measurements were performed with a goniometer. ROM included lack of passive extension (normal \< 3°, nearly normal 3-5°, abnormal 6-10°, and severely abnormal \> 10°) and lack of passive flexion (normal 0-5°, nearly normal 6-15°, abnormal 16-25°, and severely abnormal \> 25°).
Time frame: 15 years
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One leg hop test
One leg hop test was performed to assess the functional capacity of the knee. The patient hopped a maximum length three times on each leg separately and the best result was recorded for both legs. The result of the operated leg was then compared with that of the non-operated leg.
Time frame: 15 years