Comparison of preoperative templating with postoperative assessment in cementless total hip arthroplasty

Suh, Kuen Tak; Cheon, Sang Jin; Kim, Dae Woong

doi:10.1080/00016470410001708070

Cited by 61 publications

(39 citation statements)

References 16 publications

(13 reference statements)

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“…Lengthening of the operated limb can lead to joint stiffness, sciatic nerve palsy, low back pain, early failure of the prosthesis and the need for revision surgery [7,13,15,17]. Shortening can impair hip abduction and increase the risk of dislocation [13].…”

Section: Discussionmentioning

confidence: 99%

“…Reports in the literature show a change in leg length following THA from 21 mm short to 35 mm long [5,7,15]. Studies have shown that a discrepancy greater than 10 mm can result in a limp, back pain, sciatica, stiffness, hip dislocation, the need for a shoe raise and early failure [7,13,15,17]. These problems are particularly problematic in the younger population where the impact on quality of life may be more marked.…”

Section: Introductionmentioning

confidence: 98%

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Leg Length Discrepancy in Cementless Total Hip Arthroplasty

Peck¹,

Malhotra²,

Kim³

2011

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The use of cementless total hip arthroplasty (THA) is on the increase. In order to achieve rotational and axial stability larger implants may be required than originally templated for. This could potentially result in a larger leg length inequality. Our objective was to determine whether there is greater inequality in leg length post-operatively in cementless THA as compared to cemented implants. 136 consecutive patients undergoing elective THA between June 2007 and May 2008 were included. Post-operative digital radiographs were examined to determine leg length. Twenty seven patients (20%) underwent a cemented procedure and 109 (80%) a cementless procedure. In the cemented group the mean leg length discrepancy was 7.3 mm (range 19 mm short to 21 mm long). In the cementless group the mean measured leg length discrepancy was 6.3 mm (range 18 mm short to 23 mm long). There was no significant difference between the two groups (P = 0.443). This study shows that with accurate pre-operative templating, both cemented and cementless procedures produce comparable and acceptable leg length discrepancies.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Leg Length Discrepancy in Cementless Total Hip Arthroplasty

Peck¹,

Malhotra²,

Kim³

2011

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“…Many surgeons use either standard radiographs with acetate templates or digital templating for preoperative planning for THA. The use of hard-copy (analog) radiographs with onlay acetate templates has been well studied [5,13,24] but has inherent potential flaws resulting from actual variations in radiographic magnification [23]. The development of digital radiography and Picture Archiving and Communication Systems has in turn led to the development of digital templating software.…”

Section: Introductionmentioning

confidence: 99%

Acetate Templating on Digital Images Is More Accurate Than Computer-based Templating for Total Hip Arthroplasty

Petretta

Strelzow

Ohly

et al. 2015

Clinical Orthopaedics &Amp; Related Research

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Background Templating is an important aspect of preoperative planning for total hip arthroplasty and can help determine the size and positioning of the prosthesis. Historically, templating has been performed using acetate templates over printed radiographs. As a result of the increasing use of digital imaging, surgeons now either obtain additional printed radiographs solely for templating purposes or use specialized digital templating software, both of which carry additional cost. Questions/purposes The purposes of this study was to compare acetate templating of digitally calibrated images on an LCD monitor to digital templating in terms of (1) accuracy; (2) reproducibility; and (3) time efficiency.Methods Acetate onlay templating was performed directly over digital radiographs on an LCD monitor and was compared with digital templating. Five separate observers participated in this study templating on 52 total hip arthroplasties. For the acetate templating, the digital images were magnified to the scaled reference on the templates provided by the manufacturer (ratio 1.2:1) before templating using a 25-mm marker as a reference. Both the acetate and digital templating results were then compared with the actual implanted components to determine accuracy. Interobserver and intraobserver variability was determined by an intraclass correlation coefficient. Observers recorded time to complete templating from the time of complete upload of patients' imaging onto the system to completion of templating. Conclusions Acetate onlay templating on digitally calibrated images can be a reliable substitute for digital templating using specialized software. It is quicker to

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“…It also helps to identify the optimal sizes of the components and thereby avoid limb discrepancies, insufficient offset reconstructions, femoral fractures and implant failures due to a lack of stability [2][3][4][5][6]. Templating on radiographs has shown to be a reliable and accurate way to determine the size of the components prior total hip arthroplasty (THA) [5,[7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The accuracy of digital templating: a comparison of short-stem total hip arthroplasty and conventional total hip arthroplasty

Schmidutz

Steinbrück

Wanke-Jellinek

et al. 2012

International Orthopaedics (SICOT)

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Purpose Selection of the correct femoral stem size is crucial in total hip arthroplasty for an uncomplicated implantation and good initial stability. Pre-operative templating has been shown to be a valuable tool in predicting the correct implant size. For short-stem total hip arthroplasty (SHA), which recently is increasingly used, it is unknown if templating can be performed as reliable as conventional total hip arthroplasty (THA). Methods A total of 100 hip arthroplasties, 50 with SHA and 50 with THA, were templated by four orthopaedic surgeons each. The surgeons had different levels of professional experience and performed a digital template of the acetabular and femoral component on the pre-operative radiographs. The results were compared with the truly inserted implant size. Results For the femoral stems the average percentage of agreement (±1 size) was 89.0 % in SHA and 88.5 % in THA. There was no significant difference among surgeons in the accuracy of templating the correct stem size and no significant difference between templating SHA and THA. For the acetabular component the average percentage of agreement (±1 size) was 75.8 %. However, the more experienced surgeons showed a significant higher accuracy for templating the correct cup size than the less experienced surgeons. Conclusion Digital templating of SHA can predict the stem sizes as accurately as conventional THA. Therefore digital templating is also recommendable for SHA, as it helps to predict the implant size prior to surgery and thereby might help to avoid complications.

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Comparison of preoperative templating with postoperative assessment in cementless total hip arthroplasty

Cited by 61 publications

References 16 publications

Leg Length Discrepancy in Cementless Total Hip Arthroplasty

Leg Length Discrepancy in Cementless Total Hip Arthroplasty

Acetate Templating on Digital Images Is More Accurate Than Computer-based Templating for Total Hip Arthroplasty

The accuracy of digital templating: a comparison of short-stem total hip arthroplasty and conventional total hip arthroplasty

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