Why Candidates Fail the Range of Motion — Lower Extremities (Hip, Knee, Ankle) Skill
Lower extremity ROM covers the hip, knee, and ankle. The ankle is the most commonly skipped joint — candidates finish the knee and consider the leg complete. Evaluators also check that the limb is supported at both the joint and the distal end during rotation. Forcing the hip into external rotation beyond its natural range is flagged as a safety error, particularly in residents with hip replacements.
How this skill is evaluated
The evaluator scores each skill on a pass/fail checklist. You do not get partial credit. A single critical error — or several minor ones — will fail you on this skill entirely. You must pass all 5 randomly selected skills to pass the clinical exam.
The 5 Most Common Failure Points
Supporting only the ankle without supporting the knee — this strains the joint.
Forcing the leg past natural resistance.
Forgetting the ankle inversion/eversion movements.
Moving too fast and losing control of the heavy lower extremity.
Not covering the resident adequately during the exercise, compromising privacy.
Exactly What the Evaluator Is Watching
These are the specific checkpoints on the evaluator's score sheet for this skill.
- ✓
Leg is supported at the knee and ankle for all movements.
- ✓
All joints are exercised: hip, knee, ankle, and toes.
- ✓
Movements are slow, smooth, and controlled.
- ✓
Candidate stops if the resident reports discomfort.
- ✓
Each motion is repeated 3–5 times.
How to Avoid These Mistakes on Exam Day
These tips come from the most common failure patterns in Range of Motion — Lower Extremities (Hip, Knee, Ankle).
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Lower extremities are heavy — position yourself close to the bed and use good body mechanics.
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Support at knee and ankle for every lower extremity movement.
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Move through all three joints: hip, knee, ankle (and toes).
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Slow, deliberate movements demonstrate competence.
Practice the written exam too
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