Anterior cruciate reconstruction requires a surgical incision, creation of a tibial and femoral tunnel, passage of the tendons with fixation until they heal in the osseous tunnels. Bone heals to bone in 6 weeks and tendons heal to bone in 8 weeks and should require modification of weightbearing until healed but are definitely strong enough to immediately work on rehabilitation to gain normal flexibility and start developing the needed quadriceps strength while maintaing flexibility of the hamstrings.
The style, frequency, anf intensity of the rehabilitation program has significant influence on the rate of recovery from this major operative procedure to the return to sports.
Just as seen in amateur professionals athletes numerous sessions per day working on flexibility in conjunction with numerous sessions of quadriceps rehabilitation with single-leg leg press as compared to just a single session of physical therapy per day is striking.
If you participated in just a single sessions of physical therapy each day, the recovery is pitifuliy slow!!