Hughston’s posteromedial & posterolateral drawer test :

• This test is used by to doctor for the check of to knee rotatory stability .
• It is perform in to examination part of assessment .
• This test is perform when the patient complain of knee pain .

What is purpose of this test ?

• This test is used to for the check the posteromedial & posterolateral rotatory instability of to knee.

How to perform of this test ?

First part of this test :

• Test position of patient is supine .
• Into supine positive with to knee is flexed up to 80’to 90′ & hip flexed to 45 ‘ .
• Then examine medially rotates to patient’s foot slightly & sits on to stabilize it .
• Examiner is pushes to tibia posteriorly .
• If to tibia move/rotates posteriorly onto medial aspect an excessive amount relative to normal knee.
• Medial tubercle rotates posteriory around the PCL means posterior cruciate ligament when the tibia is in mild medial rotation .
• If the posterior cruciate ligament is also torn , the posteriormedial movement is greater & tibia subluxates posteriorly .

Second part of this test ?

• This test is perform for the posterolateral rotary instability .
• This test is perform in same way of the posteromedial rotary instability test technique .
• But different is that patient’s foot is sightly laterally rotated.
• It the tibia rotates posteriorly on to lateral side an excessive amount relatives to uninvolved leg , when the examiner pushes the tibia posterioly .
• Examiner is palpate to fibula while doing the movement to feel for excessive movement .

• This test is also perform in sitting position .
• Into sitting position flex to knee & sit to edge of the examining table.
• Then the examiner is pushes the knee posteriorly while holding the patient’s leg in medial rotation .
• After that watch the same excessive movement .

Result of this test ?

First part of this test :

• This positive test is indicate to to postero-medial rotary instability .

Second part of this test :

• This positive test is indicate to to posterolateral rotary instability .
• This test is positive only if the posterior cruciate ligament [ PCL ] & lateral collatral ligament is torn .

What is structure injured when the test is positive ?

In to first part of this test :

1. Posterior cruciate ligament
2. Medial collateral ligament
3. Posterior oblique ligament
4. Anterior cruciate ligament
5. Medial meniscus
6. Semimembranosus tendon
7. Posteromedial capsule