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Arthroplasty in the ankylotic hip

A Toni¹, A L Bueno Lozano, A Sudanese

¹Clinica Ortopedica, Università di Bologna.

La Chirurgia Degli Organi Di Movimento

|July 1, 1994

Summary

Arthroplasty for ankylotic hip improved movement in most patients, but persistent gluteal muscle hypotrophy caused significant limping. Radiographic outcomes were favorable, though aseptic loosening occurred, particularly in younger patients.

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Area of Science:

Orthopedic Surgery
Reconstructive Surgery

Background:

Ankylotic hip presents significant mobility challenges.
Arthroplasty is a potential treatment for ankylotic hip.
Understanding outcomes is crucial for patient management.

Purpose of the Study:

To evaluate the clinical and radiographic outcomes of arthroplasty in treating ankylotic hip.
To assess functional improvements and complications associated with the procedure.

Main Methods:

Retrospective analysis of 30 arthroplasty cases for ankylotic hip.
Clinical assessment of joint movement, pain, and gait.
Radiographic evaluation for prosthetic stability and complications like aseptic loosening.

Main Results:

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Improved joint movement in 63% of cases; normal excursion in 37%.
87% of patients were asymptomatic post-surgery, but 62% experienced persistent limping due to gluteal hypotrophy.
Aseptic loosening incidence was 20% (acetabulum) and 12% (stem) for cemented prostheses; higher in patients ≤45 years.
Dislocation occurred in 6.6%; leg length discrepancy was corrected or reduced in most cases.

Conclusions:

Arthroplasty offers significant functional improvement for ankylotic hip but does not fully resolve gait issues related to muscle hypotrophy.
Aseptic loosening is a concern, especially in younger patients, necessitating long-term monitoring.
The procedure effectively addresses leg length discrepancies and provides pain relief for the majority.