High body mass index is associated with increased risk of implant dislocation following primary total hip replacement: 2,106 patients followed for up to 8 years

Sadr–Azodi, Omid; Adami, Johanna; Lindström, David; Eriksson, Karl; Wladis, Andreas; Bellocco, Rino

doi:10.1080/17453670710014897

Cited by 109 publications

(49 citation statements)

References 25 publications

(19 reference statements)

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“…They indicated that the increased risk of implant dislocation in overweight and obese patients may reflect a more complicated surgical procedure; in these patients, excessive adipose and muscle tissue mass in the hip region can make the surgical procedure more difficult and result in suboptimal orientation of the prosthetic components [16]. Our findings indicate that implant impingement occurred much less frequently in obese patients if implant positioning is correctly performed.…”

Section: Discussionsupporting

confidence: 49%

“…Azodi et al demonstrated that a high BMI was significantly associated with an increased risk of implant dislocation following primary THA [16]. They indicated that the increased risk of implant dislocation in overweight and obese patients may reflect a more complicated surgical procedure; in these patients, excessive adipose and muscle tissue mass in the hip region can make the surgical procedure more difficult and result in suboptimal orientation of the prosthetic components [16].…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have attempted to clarify the interaction between obesity and dislocation following THA [14][15][16]. Azodi et al demonstrated that a high body mass index (BMI) increased the risk of dislocation after THA [16]. In particular, morbidly obese patients (BMI >40) had a statistically significant higher risk of dislocation [3,15].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Obese patients may have more soft tissue impingement following primary total hip arthroplasty

Hayashi

Nishiyama

Fujishiro

et al. 2012

International Orthopaedics (SICOT)

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Purpose Several studies have reported a risk of dislocation in obese patients after total hip arthroplasty. In this study, we evaluated the interaction between obesity and dislocation by kinematic analysis using a navigation system. Methods The intraoperative range of motion (ROM) and postoperative impingement-free ROM were measured in 38 patients, and we compared the impingement-free ROM in obese and non obese patients. Results The postoperatively simulated ROM was similar in the obese and non obese groups. The intraoperative ROM was smaller in the obese group. The difference values between the intraoperative ROM and postoperatively simulated ROM were larger in the obese group. These results indicate that obese patients have less ROM following primary total hip arthroplasty even when the implant positioning is performed correctly. Conclusions Dislocations are multifactorial problems including soft tissue impingement. Therefore, the risk of dislocation caused by soft tissue impingement in obese patients may be increased.

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Section: Discussionsupporting

confidence: 49%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Obese patients may have more soft tissue impingement following primary total hip arthroplasty

Hayashi

Nishiyama

Fujishiro

et al. 2012

International Orthopaedics (SICOT)

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“…Navigation systems have been developed to intraoperatively facilitate correct component positioning and provide anatomical hip angular information [14,15]. These systems are also used for intraoperative kinematic analyses other than those performed for correct component positioning.…”

Section: Introductionmentioning

confidence: 99%

Excessive femoral offset does not affect the range of motion after total hip arthroplasty

Hayashi

Nishiyama

Fujishiro

et al. 2013

International Orthopaedics (SICOT)

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Purpose Implant dislocations are often caused by implant or bone impingement, and less impingement is critical to prevent dislocations. The aim of this study was to clarify the effect of the femoral offset in avoiding component or bony impingement after total hip arthroplasty (THA). Methods Seventy-eight patients underwent THA with a Pinnacle cup and Summit stem (DePuy). Intraoperative kinematic analysis was performed with a navigation system, which was used to obtain intraoperative range of motion (ROM) measurements during trial insertion of stems of two different offset lengths with the same head size. Further, ROM was also measured after actual component insertion. Results Maximal ROM was independent of the femoral offset of the stem in each patient. However, the range of external rotation was significantly greater in patients with a greater femoral offset. Conclusions The Summit stem has enough offset length to avoid implant/bone impingement, even when the standard offset stem is used. Nevertheless, selection of the offset stem should be performed carefully to prevent offset complications.

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Smoking as a risk factor for short‐term outcomes following primary total hip and total knee replacement in veterans

Singh¹,

Houston²,

Ponce³

et al. 2011

Arthritis Care & Research

121

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High body mass index is associated with increased risk of implant dislocation following primary total hip replacement: 2,106 patients followed for up to 8 years

Cited by 109 publications

References 25 publications

Obese patients may have more soft tissue impingement following primary total hip arthroplasty

Obese patients may have more soft tissue impingement following primary total hip arthroplasty

Excessive femoral offset does not affect the range of motion after total hip arthroplasty

Smoking as a risk factor for short‐term outcomes following primary total hip and total knee replacement in veterans

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