Hughston’s Plica test is a clinical examination to assess plica injury in the knee joint.
- Patient supine with leg straight.
- Examiner flexes and medially rotates the leg while applying a medial to lateral force on the patella with the heel of the hand
- Examiner palpates the medial femoral condyles with fingers.
- Examiner applies force the patella while flexing & extending the knee & observing for the presence of patellar “popping” or “shutter”
The presence of any popping or shutter suggests Plica inflammation. Plica bands may be present and asymptotic in an otherwise healthy individual. Thus, the location of the band will determine whether or not Patella tracking will be affected.
Positive Hughston’s Plica Test
- “Popping” or “shutter”: Plica inflammation
Plica: remnant of an embryonic septum that makes up knee joint capsule. Incidence of patellar plica varies from 18% to 60% of the population. Also see Plica Stutter test.