18 June 2022 : Review article
Narrative Review of the Mechanism of Hip Prosthesis Dislocation and Methods to Reduce the Risk of Dislocation
Maciej Kostewicz1ABEF*, Grzegorz Szczęsny
1AEF, Wiesław Tomaszewski2E, Paweł Małdyk1E
DOI: 10.12659/MSM.935665
Med Sci Monit 2022; 28:e935665
Background
Mechanisms of Dislocation
Positioning of the Acetabulum
Muscular Disorders Favoring Dislocations
Inappropriate Positioning of the Stem
Impact of Stiffness of the Lumbar Spine
Patient-Dependent Factors that Predispose to THA Dislocation
Factors Preventing Hip Prosthesis Dislocation
Outcomes of Hip Prosthesis Dislocation
Preoperative Planning
Conclusions
References
Table 1 Summary of patient-dependent factors that predispose to implant dislocation.
| Numbers\the section | Patients-dependent factors that predispose to THA dislocation |
|---|---|
| 1. | Insubordinate, alcohol, drug abused – corresponds with brawls |
| 2. | Patients with neurologic and psychiatric disorders, including epilepsy, dementia, disorientation, ataxia, impaired consciousness, coma and delusions. Also - paresis and nerve palsy affecting the lower limb that impairs muscular balance of the pelvic girdle |
| 3. | Undertaking professional risky activities that promote injuries to the hip joint: |
| 4. | Very active amateur sportsmen |
| 5. | Bedridden patients that have an advanced muscular atrophy due to persistent disuse (lack of congruency of the hip joint) |
| 6. | Lumbosacral pathology |
| 7. | THA with low-diameter femoral head |
| 8. | Technical errors in THA – inexperienced surgeon |
| 9. | Advanced age (includes several of the factors mentioned above) |
| 10. | Obesity (BMI >30 kg/m) |