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- Publisher Website: 10.1007/s00167-014-3264-2
- Scopus: eid_2-s2.0-84948444889
- PMID: 25217311
- WOS: WOS:000365715800026
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Article: Comparison between patient-specific instruments and conventional instruments and computer navigation in total knee arthroplasty: a randomized controlled trial
Title | Comparison between patient-specific instruments and conventional instruments and computer navigation in total knee arthroplasty: a randomized controlled trial |
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Authors | |
Keywords | Patient-specific instrumentation Total knee arthroplasty Computer navigation Lower limb alignment Component position Functional outcomes |
Issue Date | 2015 |
Publisher | Springer. The Journal's web site is located at http://www.springer.com/medicine/orthopedics/journal/167 |
Citation | Knee Surgery, Sports Traumatology, Arthroscopy, 2015, v. 23 n. 12, p. 3637-3645 How to Cite? |
Abstract | Purpose:
The current study investigated the accuracy in achieving proper lower limb alignment and individual component positions after total knee arthroplasty (TKA) with 3 different instrumentation techniques. It was hypothesized that patient-specific instruments (PSI) would achieve more accurate lower limb alignment and component positions compared to conventional instruments (CON).
Methods:
Ninety knees in 81 patients were randomized in 1:1:1 ratio into CON, computer navigation (NAV) and PSI groups to receive TKA. The surgical routines were standardized. The lower limb mechanical axis and individual component positions were assessed on standard radiographs. Tourniquet time, operation time and patients’ functional scores were documented.
Results:
Conventional instruments and PSI were more likely to result in an excessively flexed femoral component (p = 0.001) compared to NAV. Number of outliers in postoperative lower limb alignment, and other components positions in the coronal and sagittal plane showed no statistically significant difference. The mean tourniquet time and operation time was significantly shorter in CON and PSI groups than NAV group (p < 0.001). Four early complications occurred in the PSI group (p = 0.015). At 3-month follow-up, there was no difference in terms of the knee range of motion and patients’ function among the 3 groups.
Conclusion:
No significant radiological and clinical benefit could be demonstrated in using PSI over CON or NAV in TKA. Routine use of PSI is not recommended because of the extra cost and waiting time.
Level of evidence:
I. |
Persistent Identifier | http://hdl.handle.net/10722/203261 |
ISSN | 2023 Impact Factor: 3.3 2023 SCImago Journal Rankings: 1.785 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Yan, CH | - |
dc.contributor.author | Chiu, KY | - |
dc.contributor.author | Ng, FY | - |
dc.contributor.author | Chan, PK | - |
dc.contributor.author | Fang, CX | - |
dc.date.accessioned | 2014-09-19T13:11:36Z | - |
dc.date.available | 2014-09-19T13:11:36Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Knee Surgery, Sports Traumatology, Arthroscopy, 2015, v. 23 n. 12, p. 3637-3645 | - |
dc.identifier.issn | 0942-2056 | - |
dc.identifier.uri | http://hdl.handle.net/10722/203261 | - |
dc.description.abstract | Purpose: The current study investigated the accuracy in achieving proper lower limb alignment and individual component positions after total knee arthroplasty (TKA) with 3 different instrumentation techniques. It was hypothesized that patient-specific instruments (PSI) would achieve more accurate lower limb alignment and component positions compared to conventional instruments (CON). Methods: Ninety knees in 81 patients were randomized in 1:1:1 ratio into CON, computer navigation (NAV) and PSI groups to receive TKA. The surgical routines were standardized. The lower limb mechanical axis and individual component positions were assessed on standard radiographs. Tourniquet time, operation time and patients’ functional scores were documented. Results: Conventional instruments and PSI were more likely to result in an excessively flexed femoral component (p = 0.001) compared to NAV. Number of outliers in postoperative lower limb alignment, and other components positions in the coronal and sagittal plane showed no statistically significant difference. The mean tourniquet time and operation time was significantly shorter in CON and PSI groups than NAV group (p < 0.001). Four early complications occurred in the PSI group (p = 0.015). At 3-month follow-up, there was no difference in terms of the knee range of motion and patients’ function among the 3 groups. Conclusion: No significant radiological and clinical benefit could be demonstrated in using PSI over CON or NAV in TKA. Routine use of PSI is not recommended because of the extra cost and waiting time. Level of evidence: I. | - |
dc.language | eng | - |
dc.publisher | Springer. The Journal's web site is located at http://www.springer.com/medicine/orthopedics/journal/167 | - |
dc.relation.ispartof | Knee Surgery, Sports Traumatology, Arthroscopy | - |
dc.subject | Patient-specific instrumentation | - |
dc.subject | Total knee arthroplasty | - |
dc.subject | Computer navigation | - |
dc.subject | Lower limb alignment | - |
dc.subject | Component position | - |
dc.subject | Functional outcomes | - |
dc.title | Comparison between patient-specific instruments and conventional instruments and computer navigation in total knee arthroplasty: a randomized controlled trial | - |
dc.type | Article | - |
dc.identifier.email | Yan, CH: yanchoi@hku.hk | - |
dc.identifier.email | Chiu, KY: pkychiu@hkucc.hku.hk | - |
dc.identifier.email | Ng, FY: fyng@hkucc.hku.hk | - |
dc.identifier.email | Chan, PK: cpk464@hku.hk | - |
dc.identifier.email | Fang, CX: cfang@hku.hk | - |
dc.identifier.authority | Yan, CH=rp00303 | - |
dc.identifier.authority | Chiu, KY=rp00379 | - |
dc.identifier.authority | Chan, PK=rp02911 | - |
dc.identifier.authority | Fang, CX=rp02016 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1007/s00167-014-3264-2 | - |
dc.identifier.pmid | 25217311 | - |
dc.identifier.scopus | eid_2-s2.0-84948444889 | - |
dc.identifier.hkuros | 240087 | - |
dc.identifier.volume | 23 | - |
dc.identifier.issue | 12 | - |
dc.identifier.spage | 3637 | - |
dc.identifier.epage | 3645 | - |
dc.identifier.eissn | 1433-7347 | - |
dc.identifier.isi | WOS:000365715800026 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 0942-2056 | - |