It is very common sir these type of fracture take time, knee bending not achieved yet might be because of pain, muscle tightness, soft tissue tightness. So, once again visit your orthopedic consultant and take opinion. Knee strengthing exercises keep doing along with knee bending and knee straightening if quadriceps lag. In some patient it will take around 9-12 month to get the 100-110 ROM. If you achieved 110 degree knee bending their will be no problem in ADL. So, visit and qualified physiotherapist near you. All the very best Thanks