Hip Replacement Dislocation
Hip replacement dislocation occurs when the artificial femoral head comes out of the socket. It is a medical emergency. Sudden severe hip or groin pain, inability to move or bear weight and a visibly shortened or rotated leg after a twist, fall or awkward movement requires emergency assessment.
For the principal treatment page, read Total Hip Replacement in Mumbai.
Quick Answer
Stop walking and seek emergency care; do not try to pull or manipulate the leg.
X-rays should confirm the dislocation direction and assess for fracture or component failure.
Many first episodes can be reduced without open surgery under anaesthesia or sedation.
The hip must be re-imaged and the limb’s nerve and blood supply checked after reduction.
Recurrent dislocation requires cause-specific assessment, often including CT and selected hip-spine imaging.
Revision should correct the cause rather than simply add constraint without understanding the instability mechanism.
Symptoms That Need Emergency Assessment
Abrupt severe hip, groin or buttock pain.
Inability to stand, walk or move the hip.
A shortened, lengthened or abnormally rotated leg.
A popping sensation followed by deformity or loss of function.
New numbness, weakness, a cold foot or reduced circulation.
Do not ask a family member to pull the leg or attempt reduction outside a hospital. Forceful manipulation can cause fracture, nerve injury, vascular injury or damage to the implant. Not every painless click is a dislocation, but sudden pain with deformity or loss of weight bearing should be treated as one until assessed.
Why a Replaced Hip Can Dislocate
Hip stability depends on component orientation, impingement-free movement, femoral-head and liner design, offset, leg length, soft-tissue tension, abductor function and how the pelvis moves relative to the spine. Instability is usually multifactorial rather than a single patient or surgeon error.
Patient and medical factors
Neurological disease, muscle weakness or cognitive impairment.
Previous hip operations, fracture surgery or revision replacement.
Lumbar spinal fusion, spinal stiffness or abnormal spinopelvic movement.
Falls, trauma, intoxication, sedation or unsafe transfers.
Surgical and implant factors
Cup or stem orientation that creates impingement or inadequate stability.
Inadequate soft-tissue tension or abductor deficiency.
Small head size, liner geometry or wear-related loss of stability.
Loose components, fracture, infection or major bone loss.
The surgical approach can influence early high-risk positions, but no approach makes dislocation impossible. Precautions should match the actual operation and individual risk rather than a generic poster.
Emergency Assessment and Reduction
The limb’s position, skin, circulation and nerve function should be documented. X-rays confirm the direction of dislocation and look for fracture, implant breakage or component migration. Reduction is generally performed under sedation or anaesthesia with muscle relaxation and imaging support when needed.
Open reduction may be required when closed reduction is blocked, unsafe or unsuccessful, or when fracture, component dissociation or another mechanical problem is present. Forceful repeated attempts can cause fracture or damage.
Checks After Reduction
Repeat X-rays to confirm a concentric reduction and exclude fracture or component damage.
Repeat nerve and blood-supply examination.
Review the movement, fall, trauma or position that triggered the event.
Assess pain, ability to mobilise and whether a fracture or infection remains possible.
Give individual precautions, walking-aid and follow-up instructions in writing.
First Dislocation Versus Recurrent Instability
A first early dislocation with acceptable component position and an identifiable high-risk movement may be managed with reduction, temporary activity modification and rehabilitation. The episode still needs follow-up because a first dislocation can reveal component, soft-tissue or hip-spine problems.
Recurrent or late dislocation requires deeper assessment. CT may evaluate component orientation, bone loss and impingement. Standing and sitting pelvic or spine imaging may be selected when spinal stiffness, fusion or abnormal pelvic movement is relevant. Infection should be considered when pain, loosening or systemic or wound features are present.
Precautions, Bracing and Rehabilitation
After reduction, precautions should reflect the dislocation direction, surgical approach and suspected mechanism. Transfer training, chair and toilet height, fall prevention and supervised strengthening may be needed. A brace may be used in selected patients, but it cannot correct a malpositioned component, severe abductor failure or another major mechanical cause.
Generic lifetime restrictions are not appropriate for every patient. The treating surgeon should define which positions are risky and how long precautions apply.
When Revision Surgery Is Considered
Repeated dislocation despite appropriate nonoperative management.
Malpositioned, loose or damaged components.
Impingement, inadequate offset or soft-tissue tension.
Abductor deficiency, severe wear or bone loss.
Instability associated with infection, fracture or component failure.
Revision options may include repositioning or replacing the cup or stem, restoring offset and soft-tissue tension, changing the head or liner, repairing soft tissue, using a dual-mobility articulation or using a constrained liner in selected salvage situations. Dual mobility and constrained liners have specific failure modes and do not replace diagnosis of the instability mechanism.
Read Revision Hip Replacement in Mumbai and Hip Replacement Second Opinion in Mumbai.
Robotic Assistance and Dislocation Risk
Robotic assistance may support component planning, orientation, leg-length and offset measurements. It cannot eliminate soft-tissue failure, falls, neurological disease, spinal-pelvic problems or every positioning error. Technology should support a patient-specific stability plan rather than be presented as a guarantee against dislocation.
Preventing Another Episode
Understand the suspected mechanism and individual high-risk positions.
Use the prescribed walking aid and transfer method.
Address muscle weakness, falls, medication-related confusion and home hazards.
Complete component and hip-spine assessment when instability recurs.
Avoid repeated reductions without a cause-focused follow-up plan.
Questions Patients Commonly Ask
Can I walk on a dislocated hip replacement?
No. Stop weight bearing and seek emergency care. Attempting to walk can increase pain and the risk of fracture or other injury.
Does every dislocation require revision surgery?
No. Many first episodes can be reduced without open surgery. Revision becomes more likely when instability recurs or evaluation identifies a correctable mechanical cause.
Can a hip dislocate years later?
Yes. Wear, soft-tissue change, trauma, component problems and altered spinopelvic movement can contribute to late instability.
Will dual mobility guarantee that the hip cannot dislocate?
No. Dual mobility can improve stability in selected patients but has specific risks and does not correct every cause of instability.
How long do precautions last?
Duration depends on the approach, dislocation direction, tissue healing, recurrence risk and the treatment used. Follow the instructions for the actual operation and episode.
Clinical References
2025 review: why a total hip replacement dislocates—diagnosis and management
2024 review: risk factors and preventive options for primary THA dislocation
Meta-analysis of dislocation risk factors after primary total hip replacement
2026 study: recurrent dislocation after revision for instability
AAOS OrthoInfo: Revision Total Hip Replacement
About Dr. Mayur Rabhadiya
Dr. Mayur Rabhadiya is an Orthopedic and Joint Replacement Surgeon in Mumbai. His hip practice includes diagnosis-led assessment, primary and revision hip replacement planning and robotic-assisted planning in selected cases. Recurrent instability is evaluated by identifying component, soft-tissue, neurological and hip-spine causes before selecting a revision strategy. Qualifications: MBBS, D’Ortho, DNB (Orthopedics), MNAMS (Orthopedics), FIJR (Robotic & Navigation). Read his professional profile.
Written and medically reviewed by Dr. Mayur Rabhadiya. Last medically reviewed: 17 July 2026.
Book a Hip Consultation
For an acute suspected dislocation, seek emergency hospital care rather than waiting for a clinic appointment. For recurrent instability or second-opinion assessment, consultations are available in Ghatkopar East and Ghatkopar West, Mumbai. Call or WhatsApp +91 84249 03913 or +91 96113 30063, or use the orthopedic appointment page. Bring all previous X-rays, CT scans, operation notes and implant records when available.
Medical Disclaimer
This guide provides general patient education and does not replace emergency assessment, reduction, imaging or personalised surgical advice. A suspected dislocation requires urgent hospital evaluation.