Displacement of a cemented femoral implant. A complication of manipulation of a dislocated total hip replacement

Sun, Stephen Ng Man; Gillott, Elizabeth; Davies, Neil; Skinner, John

doi:10.1136/bcr-2012-006821

“…After implanting the prosthesis stem, it will be xed with bone cement. And once the prosthesis has been xed, even if the implantation angle of the prosthesis stem is not satisfactory, the surgeon cannot readjust it, resulting in the prosthetic head and acetabular cup not being optimally matched, leading to a greater tendency towards hip joint dislocation [33,34].…”

Section: Discussionmentioning

confidence: 99%

The Role of Nickel-titanium Shape Memory Alloy Embracing Fixator in Determination of the Implantation Angle of Hip Tumor Prosthesis Stem Following Tumor Resection and the Analysis of Its Efficacy: a Retrospective Study

Wang

¹

,

Zhou

²

,

Xia

³

et al. 2021

Preprint

0

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Background: To explore the role of nickel-titanium(NiTi) shape memory alloy embracing fixator in determination of implantation angle of hip tumor prosthesis stem and analyze its efficacy. Methods: 36 patients with proximal femur tumor were treated with extended tumor resection and prosthetic replacement. 14 patients received prosthetic replacements with the embracing fixators fixing between the junction of the prosthesis stem and the femur temporarily, while the other 22 patients received the same replacements but without the fixators. Following aspects were compared: occurrence of complications, limb function and active hip ROM.Results: There are fewer cases of hip dislocation in the group received prosthetic replacements with the use of embracing fixators. Occurrence of deep infection presented no difference between the two groups. Better limb function and higher active range of motion (ROM) on abduction or flexion were also found in the group using embracing fixators. Conclusion: Ni-Ti shape memory alloy embracing fixator plays a key part in assisting the accurate implantation angle of the prosthesis stem in the prosthetic replacement. The prosthesis stem can be adjusted to the optimal angle with the help of the embracing fixator. Patients have lower chance of dislocation, better limb function, and higher active hip ROM. Trial registration: retrospectively registered.

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“…xed with bone cement. And once the prosthesis has been xed, even if the implantation angle of the prosthesis stem is not satisfactory, the surgeon cannot readjust it, resulting in the prosthetic head and acetabular cup not being optimally matched, leading to a greater tendency towards hip joint dislocation [33,34].…”

Section: Discussionmentioning

confidence: 99%

The role of nickel-titanium shape memory alloy embracing fixator in determination of the implantation angle of hip tumor prosthesis stem following tumor resection and the analysis of its efficacy ： a retrospective study

Wang

¹

,

Zhou

²

,

Xia

³

et al. 2020

Preprint

0

View full text Add to dashboard Cite

Background: To explore the role of nickel-titanium(NiTi) shape memory alloy embracing fixator in determination of implantation angle of hip tumor prosthesis stem and analyze its efficacy. Methods: 36 patients with proximal femur tumor were treated with extended tumor resection and prosthetic replacement. 14 patients received prosthetic replacements with the embracing fixators fixing between the junction of the prosthesis stem and the femur temporarily, while the other 22 patients received the same replacements but without the fixators. Following aspects were compared: occurrence of complications, limb function and active hip ROM.Results: There are fewer cases of hip dislocation in the group received prosthetic replacements with the use of embracing fixators. Occurrence of deep infection presented no difference between the two groups. Better limb function and higher active range of motion (ROM) on abduction or flexion were also found in the group using embracing fixators. Conclusion: Ni-Ti shape memory alloy embracing fixator plays a key part in assisting the accurate implantation angle of the prosthesis stem in the prosthetic replacement. The prosthesis stem can be adjusted to the optimal angle with the help of the embracing fixator. Patients have lower chance of dislocation, better limb function, and higher active hip ROM. Trial registration: retrospectively registered.

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Closed reduction of dislocated hip arthroplasty: a teaching institution’s experience

Coskey

¹

,

Vance

²

,

Lindsey³

2018

Current Orthopaedic Practice

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Background: Dislocation is a common complication of hip arthroplasty and is typically treated initially by closed reduction under sedation in the emergency department (ED). Although closed reduction has a very high success rate, information on the risk factors for difficult or failed procedures is scarce. Methods: The authors retrospectively reviewed the 5-year experience of treating patients for dislocated hip arthroplasty at a single center to determine the specific variables related to difficult or failed closed reductions. Results: Of 112 hip arthroplasty dislocations studied, 25 (22%) closed reductions were difficult, 20 attempted closed reductions (18%) failed, and six (6%) patients had complications (two skin lacerations, two periprosthetic fractures, one incongruent reduction, and one component loosening). Significant predictors for a difficult reduction were age, prior dislocation, time to reduction, and time from surgery. The level of anesthesia approached significance. Among the 20 hip arthroplasty dislocations in which initial closed reduction attempts in the ED failed, 12 (60%) were subsequently successful under deeper levels of sedation outside of the ED, six (30%) required an open reduction, and two (10%) required revision hip arthroplasty because of complications. Hip arthroplasty dislocations in older patients typically occurred shortly after the last surgery and were at increased risk for a difficult closed reduction or complications if dislocated for longer than 24 hr. Conclusions: In older patients, patients in the early postoperative period, first-time hip arthroplasty dislocations, or hip arthroplasty dislocations >24 hr old, clinicians should consider performing closed-hip arthroplasty reduction in an environment that offers more flexibility than the ED.

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Displacement of a cemented femoral implant. A complication of manipulation of a dislocated total hip replacement

Cited by 3 publications

References 10 publications

The Role of Nickel-titanium Shape Memory Alloy Embracing Fixator in Determination of the Implantation Angle of Hip Tumor Prosthesis Stem Following Tumor Resection and the Analysis of Its Efficacy: a Retrospective Study

The Role of Nickel-titanium Shape Memory Alloy Embracing Fixator in Determination of the Implantation Angle of Hip Tumor Prosthesis Stem Following Tumor Resection and the Analysis of Its Efficacy: a Retrospective Study

The role of nickel-titanium shape memory alloy embracing fixator in determination of the implantation angle of hip tumor prosthesis stem following tumor resection and the analysis of its efficacy ： a retrospective study

Closed reduction of dislocated hip arthroplasty: a teaching institution’s experience

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