Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation?
Objective The dual mobility cup (DMC) is designed to extend the longevity of the prosthesis by improving stability, enhancing the range of motion, and decreasing impingement without increasing wear. We hypothesized that DMC would reduce the risk of dislocation in elderly patients. This study aimed t...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-02-01
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| Series: | Orthopaedic Surgery |
| Subjects: | |
| Online Access: | https://doi.org/10.1111/os.13613 |
| _version_ | 1797936674873802752 |
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| author | Mingliang Chen Eiji Takahashi Ayumi Kaneuji Yoshiyuki Tachi Makoto Fukui Yugo Orita Toru Ichiseki You Zhou Norio Kawahara |
| author_facet | Mingliang Chen Eiji Takahashi Ayumi Kaneuji Yoshiyuki Tachi Makoto Fukui Yugo Orita Toru Ichiseki You Zhou Norio Kawahara |
| author_sort | Mingliang Chen |
| collection | DOAJ |
| description | Objective The dual mobility cup (DMC) is designed to extend the longevity of the prosthesis by improving stability, enhancing the range of motion, and decreasing impingement without increasing wear. We hypothesized that DMC would reduce the risk of dislocation in elderly patients. This study aimed to investigate the clinical and radiographic outcomes of DMC‐total hip arthroplasty (THA) in elderly patients at high risk of dislocation. Methods From June 2016 to March 2020, 94 patients with a mean age of 77.7 years (97 hips) who underwent a posterolateral approach for DMC‐THA in our department were followed up for at least one year. Preoperative and postoperative pelvic tilt angles (PTA) and DMC orientation were prospectively collected for all patients. Intraoperative and postoperative complications were recorded. A parametric test was used for normal distribution, and a non‐parametric test was used for non‐normal distribution. Results Abduction and anteversion angles of the cup were 42.4 and 18.0° in the supine position immediately postoperative. The average PTA for patients in the supine and standing positions were 26.5 and 34.5°, respectively. When moving from the supine to the standing position, patients experienced a mean posterior pelvic tilt of 9°. No intraoperative acetabular‐related complications were recorded. Postoperative complications included early infection in one patient (1.0%) and dislocation in one patient (1.0%). Conclusion Our study demonstrates that DMC‐THA provides satisfactory short‐term outcomes in elderly patients at a high risk of dislocation, regardless of the change in PTA resulting from postural transition. |
| first_indexed | 2024-04-10T18:33:01Z |
| format | Article |
| id | doaj.art-511d6f689a354b518d9655d15f209bb6 |
| institution | Directory Open Access Journal |
| issn | 1757-7853 1757-7861 |
| language | English |
| last_indexed | 2024-04-10T18:33:01Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Orthopaedic Surgery |
| spelling | doaj.art-511d6f689a354b518d9655d15f209bb62023-02-02T02:44:50ZengWileyOrthopaedic Surgery1757-78531757-78612023-02-0115249650110.1111/os.13613Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation?Mingliang Chen0Eiji Takahashi1Ayumi Kaneuji2Yoshiyuki Tachi3Makoto Fukui4Yugo Orita5Toru Ichiseki6You Zhou7Norio Kawahara8Department of Orthopaedic Surgery Kanazawa Medical University Uchinada JapanDepartment of Orthopaedic Surgery Kanazawa Medical University Uchinada JapanDepartment of Orthopaedic Surgery Kanazawa Medical University Uchinada JapanDepartment of Orthopaedic Surgery Kanazawa Medical University Uchinada JapanDepartment of Orthopaedic Surgery Kanazawa Medical University Uchinada JapanDepartment of Orthopaedic Surgery Kanazawa Medical University Uchinada JapanDepartment of Orthopaedic Surgery Kanazawa Medical University Uchinada JapanDepartment of Orthopaedics Affiliated Renhe Hospital of China Three Gorges University Yichang ChinaDepartment of Orthopaedic Surgery Kanazawa Medical University Uchinada JapanObjective The dual mobility cup (DMC) is designed to extend the longevity of the prosthesis by improving stability, enhancing the range of motion, and decreasing impingement without increasing wear. We hypothesized that DMC would reduce the risk of dislocation in elderly patients. This study aimed to investigate the clinical and radiographic outcomes of DMC‐total hip arthroplasty (THA) in elderly patients at high risk of dislocation. Methods From June 2016 to March 2020, 94 patients with a mean age of 77.7 years (97 hips) who underwent a posterolateral approach for DMC‐THA in our department were followed up for at least one year. Preoperative and postoperative pelvic tilt angles (PTA) and DMC orientation were prospectively collected for all patients. Intraoperative and postoperative complications were recorded. A parametric test was used for normal distribution, and a non‐parametric test was used for non‐normal distribution. Results Abduction and anteversion angles of the cup were 42.4 and 18.0° in the supine position immediately postoperative. The average PTA for patients in the supine and standing positions were 26.5 and 34.5°, respectively. When moving from the supine to the standing position, patients experienced a mean posterior pelvic tilt of 9°. No intraoperative acetabular‐related complications were recorded. Postoperative complications included early infection in one patient (1.0%) and dislocation in one patient (1.0%). Conclusion Our study demonstrates that DMC‐THA provides satisfactory short‐term outcomes in elderly patients at a high risk of dislocation, regardless of the change in PTA resulting from postural transition.https://doi.org/10.1111/os.13613DislocationDual mobility cupPelvic tiltSupine positionTotal hip arthroplasty |
| spellingShingle | Mingliang Chen Eiji Takahashi Ayumi Kaneuji Yoshiyuki Tachi Makoto Fukui Yugo Orita Toru Ichiseki You Zhou Norio Kawahara Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation? Orthopaedic Surgery Dislocation Dual mobility cup Pelvic tilt Supine position Total hip arthroplasty |
| title | Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation? |
| title_full | Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation? |
| title_fullStr | Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation? |
| title_full_unstemmed | Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation? |
| title_short | Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation? |
| title_sort | does the dual mobility cup reduce dislocation after primary total hip arthroplasty in elderly patients at high risk of dislocation |
| topic | Dislocation Dual mobility cup Pelvic tilt Supine position Total hip arthroplasty |
| url | https://doi.org/10.1111/os.13613 |
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