Dr. Kevin Yip

Dr Kevin Yip
Orthopaedic Surgeon
MBBS(UK), FRCS(EDIN), FAM(SING), FHKCOS(ORTHO)

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Passive abduction

POSitioning.

The subject lies in the supine position,near the border of the couch, with the lower leg pendent. The examiner stands level with the subject’s hip. One hand grasps the distal thigh from the medial side. The other hand is placed on
the opposite anterior superior iliac spine in order to stabilize the pelvis.

Procedure.

The knee is abducted with the pendent lower leg until the movement stops.

Common mistakes:

• Carrying on abduction beyond the start of the lateral pelvic tilt.
• Owing to tension in the hi-articular gracilis, abduction with extended knee has very often a shorter range of motion.

Normal functional anatomy:

• Rallge: 45-00°
• End-feel: hard ligamentous
• Limiting structures:

– pubofemoral and ischiofemoral ligaments
– adductor muscles.

Common pathological situations:

• This test may provoke groin pain in an adductor tendinitis and trochanteric or gluteal pain in bursitis.
• Serious painful limitation occurs in arthritis and painless limitation in arthrosis.

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