Injury · 2021
Is there a higher risk of dislocation of hip hemiarthroplasty in patients with neuromuscular conditions? A clinical study of 3827 patients.
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Awadallah Mahmoud, Blanco Jose, Ong Joshua, Kumar Niroshan, Rajata Pushparaj, Parker Martyn
Аннотация
AIM OF THE STUDY: The aim of this study is to identify if there is any association between neuromuscular disorders and prosthetic dislocation in patients treated with hip hemiarthroplasty for neck of femur fractures.
PATIENTS AND METHODS: Our study is a retrospective analysis of data collected over 34 years for patients with intracapsular neck of femur fracture who underwent hip hemiarthroplasty. Pathological fractures and patients treated with other treatment modalities were excluded. The study population is composed of four groups; patients with no neuromuscular disorders, patients with Parkinson's disease, patients with previous stroke, and patients with mental impairment.
RESULTS: A total of 3827 patients were treated with hip hemiarthroplasty. For the 3371 patients with no neuromuscular condition (Group I) the dislocation rate was 1.1%. 219 patients had Parkinsonism (Group II) with a dislocation rate of 3.2%, 104 patients had a previous stroke with weakness on the fracture side with a dislocation rate of 1.0% (Group III), and 984 patients had severe mental impairment with a dislocation rate of 1.8% (Group IV). The increased dislocation rate for those with Parkinson's disease was statistically significant (p = 0.02) while none of the other neuromuscular conditions were statistically significant.
CONCLUSION: Our study demonstrates an increased risk of dislocation after hemiarthroplasty for patients with Parkinson's disease in comparison to other groups. No increase was apparent for those with mental impairment or weakness from a previous stroke.
PATIENTS AND METHODS: Our study is a retrospective analysis of data collected over 34 years for patients with intracapsular neck of femur fracture who underwent hip hemiarthroplasty. Pathological fractures and patients treated with other treatment modalities were excluded. The study population is composed of four groups; patients with no neuromuscular disorders, patients with Parkinson's disease, patients with previous stroke, and patients with mental impairment.
RESULTS: A total of 3827 patients were treated with hip hemiarthroplasty. For the 3371 patients with no neuromuscular condition (Group I) the dislocation rate was 1.1%. 219 patients had Parkinsonism (Group II) with a dislocation rate of 3.2%, 104 patients had a previous stroke with weakness on the fracture side with a dislocation rate of 1.0% (Group III), and 984 patients had severe mental impairment with a dislocation rate of 1.8% (Group IV). The increased dislocation rate for those with Parkinson's disease was statistically significant (p = 0.02) while none of the other neuromuscular conditions were statistically significant.
CONCLUSION: Our study demonstrates an increased risk of dislocation after hemiarthroplasty for patients with Parkinson's disease in comparison to other groups. No increase was apparent for those with mental impairment or weakness from a previous stroke.