Smartphone-assisted technique in total hip arthroplasty can improve the precision of acetabular cup placement: a randomised controlled trial
Background: Malposition of the acetabular component mainly results from intraoperative pelvic motion and manual errors during cup placement. We investigated the outcomes of a device that uses a level indicator application of a smartphone to function as a pelvic tilt goniometer to assess intraoperati...
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| Veröffentlicht in: | Hip international 2021-01, Vol.31 (1), p.50-57 |
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| creator | Pongkunakorn, Anuwat Diewwattanawiwat, Kittipong Chatmaitri, Swist |
| description | Background:
Malposition of the acetabular component mainly results from intraoperative pelvic motion and manual errors during cup placement. We investigated the outcomes of a device that uses a level indicator application of a smartphone to function as a pelvic tilt goniometer to assess intraoperative motion. The cup positions outside Lewinnek’s safe zone were compared between the smartphone-assisted technique and the conventional method that uses a mechanical alignment guide.
Methods:
A randomised controlled trial was conducted among 64 patients receiving primary cementless total hip arthroplasties (THAs) via a posterolateral approach from June 2015 to February 2017. Acetabular components were implanted either by conventional technique (n = 32) or using smartphone technique (n = 32). Inclination and anteversion angles were measured in supine pelvic radiographs.
Results:
The inclination angle in the smartphone group was not significantly different from the conventional group (41.2° ± 3.9° vs. 40.3° ± 7.9°, p = 0.567). The anteversion angle was also similar (19.3 ± 3.8° vs 19.1° ± 5.9°, p = 0.856). However, the standard deviation of the angle in the smartphone group was significantly lower for inclination (p |
| doi_str_mv | 10.1177/1120700019873886 |
| format | Article |
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Malposition of the acetabular component mainly results from intraoperative pelvic motion and manual errors during cup placement. We investigated the outcomes of a device that uses a level indicator application of a smartphone to function as a pelvic tilt goniometer to assess intraoperative motion. The cup positions outside Lewinnek’s safe zone were compared between the smartphone-assisted technique and the conventional method that uses a mechanical alignment guide.
Methods:
A randomised controlled trial was conducted among 64 patients receiving primary cementless total hip arthroplasties (THAs) via a posterolateral approach from June 2015 to February 2017. Acetabular components were implanted either by conventional technique (n = 32) or using smartphone technique (n = 32). Inclination and anteversion angles were measured in supine pelvic radiographs.
Results:
The inclination angle in the smartphone group was not significantly different from the conventional group (41.2° ± 3.9° vs. 40.3° ± 7.9°, p = 0.567). The anteversion angle was also similar (19.3 ± 3.8° vs 19.1° ± 5.9°, p = 0.856). However, the standard deviation of the angle in the smartphone group was significantly lower for inclination (p < 0.001) and anteversion (p = 0.016). There were 3 outliers (9.4%) in the smartphone group, but 13 (40.6%) in the conventional group (p = 0.008). The risk ratio was 0.23 (95% CI, 0.07–0.73). The risk difference was −0.31 (95% CI, –0.51– –0.11).
Conclusion:
The smartphone-assisted technique in THA improves the precision of cup placement and decreases the percentage of safe zone outliers.
Thai Clinical Trials Registry (ID: TCTR20151123002).</description><identifier>ISSN: 1120-7000</identifier><identifier>EISSN: 1724-6067</identifier><identifier>DOI: 10.1177/1120700019873886</identifier><identifier>PMID: 31480865</identifier><language>eng</language><publisher>London, England: SAGE Publications</publisher><subject>Acetabulum - diagnostic imaging ; Acetabulum - surgery ; Arthroplasty, Replacement, Hip - adverse effects ; Hip Prosthesis ; Humans ; Radiography ; Smartphone</subject><ispartof>Hip international, 2021-01, Vol.31 (1), p.50-57</ispartof><rights>The Author(s) 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-4e95d6681dfd21f5a6cc23e9424156d474e44b82511569a005c1d49e422e8173</citedby><cites>FETCH-LOGICAL-c337t-4e95d6681dfd21f5a6cc23e9424156d474e44b82511569a005c1d49e422e8173</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://journals.sagepub.com/doi/pdf/10.1177/1120700019873886$$EPDF$$P50$$Gsage$$H</linktopdf><linktohtml>$$Uhttps://journals.sagepub.com/doi/10.1177/1120700019873886$$EHTML$$P50$$Gsage$$H</linktohtml><link.rule.ids>314,780,784,21818,27923,27924,43620,43621</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31480865$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Pongkunakorn, Anuwat</creatorcontrib><creatorcontrib>Diewwattanawiwat, Kittipong</creatorcontrib><creatorcontrib>Chatmaitri, Swist</creatorcontrib><title>Smartphone-assisted technique in total hip arthroplasty can improve the precision of acetabular cup placement: a randomised controlled trial</title><title>Hip international</title><addtitle>Hip Int</addtitle><description>Background:
Malposition of the acetabular component mainly results from intraoperative pelvic motion and manual errors during cup placement. We investigated the outcomes of a device that uses a level indicator application of a smartphone to function as a pelvic tilt goniometer to assess intraoperative motion. The cup positions outside Lewinnek’s safe zone were compared between the smartphone-assisted technique and the conventional method that uses a mechanical alignment guide.
Methods:
A randomised controlled trial was conducted among 64 patients receiving primary cementless total hip arthroplasties (THAs) via a posterolateral approach from June 2015 to February 2017. Acetabular components were implanted either by conventional technique (n = 32) or using smartphone technique (n = 32). Inclination and anteversion angles were measured in supine pelvic radiographs.
Results:
The inclination angle in the smartphone group was not significantly different from the conventional group (41.2° ± 3.9° vs. 40.3° ± 7.9°, p = 0.567). The anteversion angle was also similar (19.3 ± 3.8° vs 19.1° ± 5.9°, p = 0.856). However, the standard deviation of the angle in the smartphone group was significantly lower for inclination (p < 0.001) and anteversion (p = 0.016). There were 3 outliers (9.4%) in the smartphone group, but 13 (40.6%) in the conventional group (p = 0.008). The risk ratio was 0.23 (95% CI, 0.07–0.73). The risk difference was −0.31 (95% CI, –0.51– –0.11).
Conclusion:
The smartphone-assisted technique in THA improves the precision of cup placement and decreases the percentage of safe zone outliers.
Thai Clinical Trials Registry (ID: TCTR20151123002).</description><subject>Acetabulum - diagnostic imaging</subject><subject>Acetabulum - surgery</subject><subject>Arthroplasty, Replacement, Hip - adverse effects</subject><subject>Hip Prosthesis</subject><subject>Humans</subject><subject>Radiography</subject><subject>Smartphone</subject><issn>1120-7000</issn><issn>1724-6067</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kc1u3CAUhVHVqJlMus8qYtmNU8BgcHdRlLSVRuqis7cYfF0zwuACjjTvkIcOo5lkUakrLrrfOfcPoRtK7iiV8iuljEhCCG2VrJVqPqAVlYxXDWnkxxKXdHXMX6KrlPaEMNYK_gld1pQrohqxQi-_Jx3zPAYPlU7Jpgw9zmBGb_8ugK3HOWTt8GhnXMAxhtnplA_YaI_tNMfwDDiPgOcIxiYbPA4D1gay3i1OR2yWGReJgQl8_oY1jtr3YbKp1DHB5xicO5aMVrtrdDFol-Dz-V2j7dPj9uFHtfn1_efD_aYydS1zxaEVfdMo2g89o4PQjTGshpYzTkXTc8mB851igpZvqwkRhva8Bc4YKCrrNfpysi3dlyFT7ko7BpzTHsKSOsYUF6KmrC4oOaEmhpQiDN0cbdnYoaOkO56g-_cERXJ7dl92E_TvgredF6A6AUn_gW4flujLsP83fAVW35AL</recordid><startdate>202101</startdate><enddate>202101</enddate><creator>Pongkunakorn, Anuwat</creator><creator>Diewwattanawiwat, Kittipong</creator><creator>Chatmaitri, Swist</creator><general>SAGE Publications</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202101</creationdate><title>Smartphone-assisted technique in total hip arthroplasty can improve the precision of acetabular cup placement: a randomised controlled trial</title><author>Pongkunakorn, Anuwat ; Diewwattanawiwat, Kittipong ; Chatmaitri, Swist</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-4e95d6681dfd21f5a6cc23e9424156d474e44b82511569a005c1d49e422e8173</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Acetabulum - diagnostic imaging</topic><topic>Acetabulum - surgery</topic><topic>Arthroplasty, Replacement, Hip - adverse effects</topic><topic>Hip Prosthesis</topic><topic>Humans</topic><topic>Radiography</topic><topic>Smartphone</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pongkunakorn, Anuwat</creatorcontrib><creatorcontrib>Diewwattanawiwat, Kittipong</creatorcontrib><creatorcontrib>Chatmaitri, Swist</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Hip international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pongkunakorn, Anuwat</au><au>Diewwattanawiwat, Kittipong</au><au>Chatmaitri, Swist</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Smartphone-assisted technique in total hip arthroplasty can improve the precision of acetabular cup placement: a randomised controlled trial</atitle><jtitle>Hip international</jtitle><addtitle>Hip Int</addtitle><date>2021-01</date><risdate>2021</risdate><volume>31</volume><issue>1</issue><spage>50</spage><epage>57</epage><pages>50-57</pages><issn>1120-7000</issn><eissn>1724-6067</eissn><abstract>Background:
Malposition of the acetabular component mainly results from intraoperative pelvic motion and manual errors during cup placement. We investigated the outcomes of a device that uses a level indicator application of a smartphone to function as a pelvic tilt goniometer to assess intraoperative motion. The cup positions outside Lewinnek’s safe zone were compared between the smartphone-assisted technique and the conventional method that uses a mechanical alignment guide.
Methods:
A randomised controlled trial was conducted among 64 patients receiving primary cementless total hip arthroplasties (THAs) via a posterolateral approach from June 2015 to February 2017. Acetabular components were implanted either by conventional technique (n = 32) or using smartphone technique (n = 32). Inclination and anteversion angles were measured in supine pelvic radiographs.
Results:
The inclination angle in the smartphone group was not significantly different from the conventional group (41.2° ± 3.9° vs. 40.3° ± 7.9°, p = 0.567). The anteversion angle was also similar (19.3 ± 3.8° vs 19.1° ± 5.9°, p = 0.856). However, the standard deviation of the angle in the smartphone group was significantly lower for inclination (p < 0.001) and anteversion (p = 0.016). There were 3 outliers (9.4%) in the smartphone group, but 13 (40.6%) in the conventional group (p = 0.008). The risk ratio was 0.23 (95% CI, 0.07–0.73). The risk difference was −0.31 (95% CI, –0.51– –0.11).
Conclusion:
The smartphone-assisted technique in THA improves the precision of cup placement and decreases the percentage of safe zone outliers.
Thai Clinical Trials Registry (ID: TCTR20151123002).</abstract><cop>London, England</cop><pub>SAGE Publications</pub><pmid>31480865</pmid><doi>10.1177/1120700019873886</doi><tpages>8</tpages></addata></record> |
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| ispartof | Hip international, 2021-01, Vol.31 (1), p.50-57 |
| issn | 1120-7000 1724-6067 |
| language | eng |
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| source | MEDLINE; SAGE Complete A-Z List |
| subjects | Acetabulum - diagnostic imaging Acetabulum - surgery Arthroplasty, Replacement, Hip - adverse effects Hip Prosthesis Humans Radiography Smartphone |
| title | Smartphone-assisted technique in total hip arthroplasty can improve the precision of acetabular cup placement: a randomised controlled trial |
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