Front drawer signs: Symptomatic mechanisms

2021-01-26 12:00 AM

The front drawer test is to check the stability of the front cross ligaments of the knee. Doctors can use them, along with imaging and other tests, to determine if a previous cross-ligament injury and recommend treatment options.

This test may not be as accurate in diagnosing an anterior cross-ligament injury like some other diagnostic options.

Grasp the upper third of the tibial bone and pull forward, noting the laxity and forward movement of the tibia

relative to the femur.

Figure. Front drawer indication in the case of anterior cross ligament injury

It is caused by a rupture or trauma to the anterior cross ligament (ACL).

The anterior cruciate ligament has the main function of limiting the anterior movement of the tibial plateau on the femur, so when the ligament is torn, the restriction is lost and the tibial bone can move forward.

An examination of the front drawer is an examination when a pre-cross-ligament injury is suspected. In terms of evidence medicine, there are large differences in results in the studies performed. The results in one trial showed that the sensitivity of the marker was 27-88%, however, the specificity was only in the 91-99% range, and the true positive rate (positive LR *) was 11.5 so it is possible. function (hint) diagnosis when positive. In the results of another meta-analysis, the true positive rate was 3.8, the sensitivity was 9-93% and the specificity was 23-100%. However, studies that include small trials can cause misleading results. Based on the above results, it can be seen that this test is relatively specific but not sensitive.