Dislocation of bipolar hemiarthroplasty: Rate, contributing factors, and outcome

Rafael J. Sierra, Cathy D. Schleck, Miguel E. Cabanela

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Dislocation of bipolar hemiarthroplasty of the hip is a rare complication. The objectives of our study were to assess the incidence, contributing factors, and outcomes of bipolar prosthesis dislocation. From 1974 to 2001, 1812 primary bipolar hemiarthroplasties were done at our institution. Seventy-four percent were done in patients with fractures of the femoral neck. An anterolateral surgical approach was used in 79% of hips, a posterolateral approach was used in 14% of hips, and a transtrochanteric approach was used in 7% of hips. Thirty-two hips dislocated. The cumulative probabilities of dislocation at 1 year, 5 years, 10 years, and 20 years were 1.1% (95% CI range, 0.6%-1.6%), 1.5% (95% CI range, 0.9%-2.1%), 2.1% (95% CI range, 1.2%-3.1%), and 5% (95% CI range, 1.9%-9.6%), respectively. There was no significant association of dislocation with the surgical approach or with the primary operative diagnosis. More than 1/2 of the dislocations occurred within 6 months postoperative. Late dislocations occurred most commonly in patients with Bateman prostheses and osteonecrosis and were associated with inner bearing dissociation. Closed reduction was successful in preventing additional surgery in only 30% of patients. The surgeon must be aware that closed reduction may be unsuccessful, and open reduction with replacement of components may be necessary.

Original languageEnglish (US)
Pages (from-to)230-238
Number of pages9
JournalClinical Orthopaedics and Related Research
Issue number442
DOIs
StatePublished - Jan 2006
Externally publishedYes

Fingerprint

Hemiarthroplasty
Hip
Prostheses and Implants
Femoral Neck Fractures
Osteonecrosis
Incidence

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

Dislocation of bipolar hemiarthroplasty : Rate, contributing factors, and outcome. / Sierra, Rafael J.; Schleck, Cathy D.; Cabanela, Miguel E.

In: Clinical Orthopaedics and Related Research, No. 442, 01.2006, p. 230-238.

Research output: Contribution to journalArticle

Sierra, Rafael J. ; Schleck, Cathy D. ; Cabanela, Miguel E. / Dislocation of bipolar hemiarthroplasty : Rate, contributing factors, and outcome. In: Clinical Orthopaedics and Related Research. 2006 ; No. 442. pp. 230-238.
@article{609c119c3f044d6cabc405188df92e7f,
title = "Dislocation of bipolar hemiarthroplasty: Rate, contributing factors, and outcome",
abstract = "Dislocation of bipolar hemiarthroplasty of the hip is a rare complication. The objectives of our study were to assess the incidence, contributing factors, and outcomes of bipolar prosthesis dislocation. From 1974 to 2001, 1812 primary bipolar hemiarthroplasties were done at our institution. Seventy-four percent were done in patients with fractures of the femoral neck. An anterolateral surgical approach was used in 79{\%} of hips, a posterolateral approach was used in 14{\%} of hips, and a transtrochanteric approach was used in 7{\%} of hips. Thirty-two hips dislocated. The cumulative probabilities of dislocation at 1 year, 5 years, 10 years, and 20 years were 1.1{\%} (95{\%} CI range, 0.6{\%}-1.6{\%}), 1.5{\%} (95{\%} CI range, 0.9{\%}-2.1{\%}), 2.1{\%} (95{\%} CI range, 1.2{\%}-3.1{\%}), and 5{\%} (95{\%} CI range, 1.9{\%}-9.6{\%}), respectively. There was no significant association of dislocation with the surgical approach or with the primary operative diagnosis. More than 1/2 of the dislocations occurred within 6 months postoperative. Late dislocations occurred most commonly in patients with Bateman prostheses and osteonecrosis and were associated with inner bearing dissociation. Closed reduction was successful in preventing additional surgery in only 30{\%} of patients. The surgeon must be aware that closed reduction may be unsuccessful, and open reduction with replacement of components may be necessary.",
author = "Sierra, {Rafael J.} and Schleck, {Cathy D.} and Cabanela, {Miguel E.}",
year = "2006",
month = "1",
doi = "10.1097/01.blo.0000183741.96610.c3",
language = "English (US)",
pages = "230--238",
journal = "Clinical Orthopaedics and Related Research",
issn = "0009-921X",
publisher = "Springer New York",
number = "442",

}

TY - JOUR

T1 - Dislocation of bipolar hemiarthroplasty

T2 - Rate, contributing factors, and outcome

AU - Sierra, Rafael J.

AU - Schleck, Cathy D.

AU - Cabanela, Miguel E.

PY - 2006/1

Y1 - 2006/1

N2 - Dislocation of bipolar hemiarthroplasty of the hip is a rare complication. The objectives of our study were to assess the incidence, contributing factors, and outcomes of bipolar prosthesis dislocation. From 1974 to 2001, 1812 primary bipolar hemiarthroplasties were done at our institution. Seventy-four percent were done in patients with fractures of the femoral neck. An anterolateral surgical approach was used in 79% of hips, a posterolateral approach was used in 14% of hips, and a transtrochanteric approach was used in 7% of hips. Thirty-two hips dislocated. The cumulative probabilities of dislocation at 1 year, 5 years, 10 years, and 20 years were 1.1% (95% CI range, 0.6%-1.6%), 1.5% (95% CI range, 0.9%-2.1%), 2.1% (95% CI range, 1.2%-3.1%), and 5% (95% CI range, 1.9%-9.6%), respectively. There was no significant association of dislocation with the surgical approach or with the primary operative diagnosis. More than 1/2 of the dislocations occurred within 6 months postoperative. Late dislocations occurred most commonly in patients with Bateman prostheses and osteonecrosis and were associated with inner bearing dissociation. Closed reduction was successful in preventing additional surgery in only 30% of patients. The surgeon must be aware that closed reduction may be unsuccessful, and open reduction with replacement of components may be necessary.

AB - Dislocation of bipolar hemiarthroplasty of the hip is a rare complication. The objectives of our study were to assess the incidence, contributing factors, and outcomes of bipolar prosthesis dislocation. From 1974 to 2001, 1812 primary bipolar hemiarthroplasties were done at our institution. Seventy-four percent were done in patients with fractures of the femoral neck. An anterolateral surgical approach was used in 79% of hips, a posterolateral approach was used in 14% of hips, and a transtrochanteric approach was used in 7% of hips. Thirty-two hips dislocated. The cumulative probabilities of dislocation at 1 year, 5 years, 10 years, and 20 years were 1.1% (95% CI range, 0.6%-1.6%), 1.5% (95% CI range, 0.9%-2.1%), 2.1% (95% CI range, 1.2%-3.1%), and 5% (95% CI range, 1.9%-9.6%), respectively. There was no significant association of dislocation with the surgical approach or with the primary operative diagnosis. More than 1/2 of the dislocations occurred within 6 months postoperative. Late dislocations occurred most commonly in patients with Bateman prostheses and osteonecrosis and were associated with inner bearing dissociation. Closed reduction was successful in preventing additional surgery in only 30% of patients. The surgeon must be aware that closed reduction may be unsuccessful, and open reduction with replacement of components may be necessary.

UR - http://www.scopus.com/inward/record.url?scp=33645065386&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33645065386&partnerID=8YFLogxK

U2 - 10.1097/01.blo.0000183741.96610.c3

DO - 10.1097/01.blo.0000183741.96610.c3

M3 - Article

C2 - 16394766

AN - SCOPUS:33645065386

SP - 230

EP - 238

JO - Clinical Orthopaedics and Related Research

JF - Clinical Orthopaedics and Related Research

SN - 0009-921X

IS - 442

ER -