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Reduction of Risk PotentialNo flexion > 90° hip

Total Hip ReplacementNCLEX cheat sheet

Total hip replacement (arthroplasty) replaces a diseased or fractured hip joint with a prosthesis, commonly performed for severe osteoarthritis or hip fracture.

20 key facts 5 practice questions Reviewed Oct 2026
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Avoid

  • No hip flexion > 90°
  • No crossing legs / adduction
  • No internal rotation, low chairs

Do

  • Abduction pillow between legs
  • Elevated toilet seat, raised chair
  • Early ambulation per PT

Report

  • Dislocation: shortening, ext rotation
  • Sudden pain, "pop", can't move leg

Watch

  • VTE/DVT: calf pain, swelling
  • Neurovascular checks distal limb
Red flag to remember

Sudden severe hip pain, leg shortening, and rotation indicate dislocation and require immediate report.

Before you read

Test yourself first: 5 questions

Question 1 of 5

A client is 1 day post total knee arthroplasty. Which intervention is MOST important for the nurse to ensure is performed as prescribed?

What is total hip replacement?

The major postoperative concerns are dislocation of the prosthesis, venous thromboembolism, and infection. Proper positioning and adherence to hip precautions are essential to protect the new joint.

Total Hip Replacement illustrated

Total Hip Replacement — medical illustration
Total Hip Replacement — medical illustration. Illustration: BruceBlaus via Wikimedia Commons, CC BY-SA 4.0.

Key points to remember

  • With the posterior approach, key precautions are no hip flexion beyond 90 degrees, no adduction past midline, and no internal rotation.
  • Signs of prosthesis dislocation include sudden severe pain, a shortened leg, and external or internal rotation of the affected leg.
  • An abduction pillow keeps the legs apart and prevents the leg from crossing midline.
  • VTE (DVT and pulmonary embolism) is a major risk due to immobility and surgical trauma.
  • Early ambulation with physical therapy is started to prevent complications and restore function.
  • Patients should avoid low chairs, toilets, and bending to put on shoes during recovery.

Nursing priorities

  1. Maintain hip precautions: keep the legs abducted with a pillow and avoid flexion past 90 degrees.
  2. Assess neurovascular status of the affected leg and monitor the surgical drain and dressing.
  3. Administer prescribed anticoagulants and apply sequential compression devices to prevent VTE.
  4. Assist with early ambulation and physical therapy using assistive devices as ordered.
  5. Monitor for and immediately report signs of dislocation.

Labs & values

Hemoglobin:12 to 18 g/dL (monitor for surgical blood loss)
Hematocrit:37 to 52 percent
INR:2.0 to 3.0 if on warfarin prophylaxis

Patient teaching

  • Use a raised toilet seat, reachers, and a long-handled shoehorn; avoid bending at the hip past 90 degrees.
  • Do not cross your legs, sit in low chairs, or turn the operative leg inward.
  • Report increasing pain, a leg that appears shorter or rotated, or signs of infection.

Red flags: report now

  • Sudden severe hip pain, leg shortening, and rotation indicate dislocation and require immediate report.
  • Calf pain, swelling, warmth, or sudden dyspnea suggests DVT or PE and needs urgent action.
  • Never flex the operative hip beyond 90 degrees, cross the legs, or turn the leg inward.

References

Clinical references for this topic

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