A 7 or 8 mm cannulated drill bit is used to open the tunnel for the
bone block. The posterior cortex of the tibia is kept intact.
We present a technique of ACL reconstruction with quadriceps tendon autograft (QTA) using a patellar
bone block. The tendon end is fixed in the femoral tunnel and the bone plug in the tibial tunnel using reabsorbable interference screws.
Lazovic and coworkers (16) demonstrated that an improper
bone block fixation might lead to enhanced articular cartilage degeneration.
When the superior peroneal retinaculum is deficient, reconstructive procedures include groove deepening, (8,10,12)
bone block procedures, (13) reinforcement of the superior peroneal retinaculum with a tendon graft, (7,8,14-16) peroneal tendons rerouting, (17,18) or a combination of these techniques.
Grafts were pre-tensioned at 50 N for 10 minutes on a standard graft board and were then inserted into synthetic Sawbones
bone block (Pacific Research Labs, Vashon, WA) simulating cancellous bone with a density of 0.32 g/cc.
The glenoid edge displacement was measured as the deviation from the
bone block to the edge of the glenoid when the humeral head was placed at each of the three aforementioned positions.
In addition, one patient required augmentation with a posterior
bone block for significant glenoid rim deficiency.
Thus, movement of the
bone block with included teeth in CO is larger and more unstable than movement of teeth in the weakened alveolar bone of CAO.
A modified Latarjet procedure with a coracoid
bone block was successful in achieving increased patient satisfaction and return to former activity levels in 35 patients (mean age 35 years, range 20-58) in a study by Atalar et al.