My daughter (15) sublated her patella at a volleyball tourney. she passed the lachman test and others 4x including right after injury by tourney trainer. now 8 weeks later her doctor says she tore her acl and ordered a mr. my q. is can she play with ?

No!: Unfortunately trainers are not always skilled enough to determine an accurate diagnosis. If she tore her acl as confirmed by an orthopedic surgeon and MRI, she should not return to cutting, jumping or twisting sports until after surgery or she will cause other injuries to the knee that can have long term repercussions.

Potentially: There are athletes that do attempt to return to sports without having an acl reconstruction. They usually have to wear a pretty cumbersome brace that inhibits their performance. Because the acl is such an important stabilizer, the risk for reinjury with or without a brace is high and may involve tearing a meniscus. It would be much safer to have it reconstructed in general.