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.
Clinically, it is generally believed that a heavier orthodontic force is needed for the en-masse movement of the bone block
with the tooth after a corticotomy.13,14,16,17 However, our results suggest that conventional orthodontic force would increase the velocity of orthodontic tooth movement, possibly by the acceleration of the bone turnover mechanism at an early stage after a corticotomy.
Sanders, "The use of a bone block
graft from the chin for alveolar ridge augmentation," International Journal of Periodontics and Restorative Dentistry, vol.
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.
Various bone augmentation techniques have been described in the literature in order to reconstruct deficient alveolar ridges such as particulate bone grafting, guided bone regeneration, autogenous bone block
graft, ridge expansion, and alveolar distraction osteogenesis (McAllister and Haghighat, 2007; Chiapasco et al., 2006 & 2007; Esposito et al., 2006).
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.