Knee Exam

June 02, 2016 Print Friendly Version of this page Print Get a PDF version of this webpage PDF
Introduces self
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Confirms name & age of patient
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Explains & gains consent
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Asks if patient suffers from pain, stiffness or locking in the knee
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Washes hands
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Exposes patient’s knees and the joints above and below (hip and ankle/foot) and asks them to stand
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General inspection around bed and patient (walking aids, obvious scars, wasting or deformities)
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Asks patient to walk to the end of room and turn
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Comments on patient’s speed, the phases of walking, stride length and arm swing
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Inspects front for shoulder/hip alignment, limb-limb discrepancy, varus/valgus deformity, wasting of quadriceps, swellings at the knee
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Inspects back for wasting of muscles (gluteal, calf), popliteal swelling, scoliosis, skin changes, scars, hindfoot deformities, wear of shoes
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Inspects sides for fixed flexion deformities and increased kyphosis or lordosis
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With patient lying assesses the temperature of the knee joint
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Palpates the quadriceps bulk, the quadriceps tendon, the borders of the patella, the patellar tendon, tibial tuberosity, joint lines, femoral condyles and popliteal fossa
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Test active flexion and flex passively if range of movement is restricted. Comment on maximum angle (normal: 120 degrees)
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Test active extension and extend passively if necessary (normal: 5-10 degrees)
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Feels for crepitus during flexion and extension
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Tests medial collateral ligament by applying valgus stress with the knee 30 degrees flexed
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Tests lateral collateral ligament by applying varus stress with the knee 30 degrees flexed
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Performs anterior drawer test for anterior cruciate ligament by flexing knee, sitting on foot and drawing tibia forward with fingers from behind whilst gastrocnemius is relaxed. Offers Lachman’s as an alternative test
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Keeping knee in flexed position checks for tibial sag to test posterior cruciate ligament and considers using posterior drawer test
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Offers McMurray’s test for the MEDIAL meniscus: completely flex the knee, then apply a valgus stress and externally rotate the foot whilst extending it. Positive if painful or a click is felt in the joint line
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Offers McMurray’s test for the LATERAL meniscus: completely flex the knee, then apply a varus stress and internally rotate the foot whilst extending it. Positive if painful or a click is felt in the joint line
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Performs patellar apprehension test by flexing knee 90 degrees then extending knee and pushing patella laterally. Stops and reports positive if patient appears anxious or in pain
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Offers examination of hip and ankle, neurovascular exam and history
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Thanks patient and offers help to redress
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Washes hands
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Offers next step (imaging: 2 plain x rays for bony pathology or CT if indicated, MRI for soft tissue)
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Summarises appropriately with only key findings
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Offers appropriate differential diagnoses
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