alexa Dislocation after total hip arthroplasty: risk factors and treatment options.
Orthopaedics

Orthopaedics

Journal of Arthritis

Author(s): Leichtle UG, Leichtle CI, Taslaci F, Reize P, Wnschel M

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Abstract OBJECTIVE: The aim of this study was to analyze the setting for dislocations and redislocations after primary and revision total hip arthroplasty (THA), identify risk factors and optimize treatment. METHODS: This study included 56 patients with a dislocated hip following THA (n=5,205) between 1984 and 2005 and a matched control group (n=55). Hospital charts and radiographs of all patients in both groups were analyzed. Thirty-one patients in the study group were followed both clinically and radiologically. RESULTS: The dislocation rate after primary THA was 1.1\% (56/5,205) and the redislocation rate after a first occurrence was as high as 39\%. There was a positive correlation between the time intervals from the surgery to first dislocation and from the first dislocation to second dislocation (r=0.4). Most of the primary dislocations occurred within a short period of time after surgery, thus favoring consecutive dislocations. Female gender, as well as revision arthroplasty, was associated with a higher incidence of dislocations. No relation was found between the orientation of the acetabular cup and dislocation. CONCLUSION: To prevent redislocations after the first occurrence, we suggest thorough evaluation of possible technical faults which should be addressed surgically. Considering the high redislocation rate, we also advocate a stringent conservative treatment regime especially after the first THA dislocation.
This article was published in Acta Orthop Traumatol Turc and referenced in Journal of Arthritis

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