Indirect
injuries caused by twisting the flexed
knee.
Occurs
mostly in athletes and sports persons
Bucket
handle tear of meniscus is most common. The handle is caught in the
intercondylar notch of tibia
and causes pain which stops any form of knee
activity and the knee
then swells and is flexed and cannot be extended (knee
locking).
After
the initial stage, spontaneous unlocking may occur, which is then followed
by recurrence.
Parrot
beak tear follows when the handle is torn. This eliminates knee locking but
pain occurs anytime cartilage is caught between the condyles of
femur and
tibia.
History:
Direct blow to knee
or twisting injury as you may find in extensor apparatus injury. Locking of knee
Inspection:
Hemathroses and blood within the capsule of knee
joint