No benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic-on-ceramic total hip arthroplasty
Background: Ceramic-on-ceramic (COC) total hip arthroplasty (THA) has gained popularity since improvements in wear characteristics and longevity. Whether large ceramic femoral heads (≥36 mm) have increased postoperative range of motion (ROM) and a lower dislocation rate is not clear. This study aime...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2015-12-01
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| Series: | Biomedical Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S231941701600010X |
| _version_ | 1811186894957969408 |
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| author | Yu-Der Lu Shih-Hsiang Yen Feng-Chih Kuo Jun-Wen Wang Ching-Jen Wang |
| author_facet | Yu-Der Lu Shih-Hsiang Yen Feng-Chih Kuo Jun-Wen Wang Ching-Jen Wang |
| author_sort | Yu-Der Lu |
| collection | DOAJ |
| description | Background: Ceramic-on-ceramic (COC) total hip arthroplasty (THA) has gained popularity since improvements in wear characteristics and longevity. Whether large ceramic femoral heads (≥36 mm) have increased postoperative range of motion (ROM) and a lower dislocation rate is not clear. This study aimed to compare functional outcomes and early complications between large-head (≥36 mm) and smaller-head (≤32 mm) COC prostheses with a minimum follow-up of 12 months.
Methods: A total of 95 consecutive uncemented COC THAs were performed in 90 patients between January 2012 and July 2013. Of these, 49 patients (smaller-head group) received third generation and 41 patients (large-head group) received fourth generation COC prostheses. Harris hip score (HHS), Western Ontario and McMaster Universities Arthritis index (WOMAC), and ROM of the hip pre- and post-operatively were compared, as well as the presence of early complications.
Results: Postoperative HHSs (88.4 vs. 89.3, p = 0.34) and WOMAC scores (12.0 vs. 11.0, p = 0.111) were not different between the groups. Postoperative flexion ROM was lower in the smaller-head group (98.8° vs. 106.1°, p < 0.001), but there were no differences in extension, abduction, adduction, internal rotation, and external rotation. One patient in each group reported a grinding noise. There was one dislocation (1.9%) in the smaller-head group, and none in the large-head group (p = 0.371). No infections or loosening of the components occurred.
Conclusions: Large-head COC articulation provided better flexion, but functional outcomes and early complications are similar to the smaller-head COC. |
| first_indexed | 2024-04-11T13:53:00Z |
| format | Article |
| id | doaj.art-a04849f71f3f4d7f87d37cbe4e2aefa8 |
| institution | Directory Open Access Journal |
| issn | 2319-4170 |
| language | English |
| last_indexed | 2024-04-11T13:53:00Z |
| publishDate | 2015-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Biomedical Journal |
| spelling | doaj.art-a04849f71f3f4d7f87d37cbe4e2aefa82022-12-22T04:20:29ZengElsevierBiomedical Journal2319-41702015-12-0138653854310.1016/j.bj.2016.01.005No benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic-on-ceramic total hip arthroplastyYu-Der LuShih-Hsiang YenFeng-Chih KuoJun-Wen WangChing-Jen WangBackground: Ceramic-on-ceramic (COC) total hip arthroplasty (THA) has gained popularity since improvements in wear characteristics and longevity. Whether large ceramic femoral heads (≥36 mm) have increased postoperative range of motion (ROM) and a lower dislocation rate is not clear. This study aimed to compare functional outcomes and early complications between large-head (≥36 mm) and smaller-head (≤32 mm) COC prostheses with a minimum follow-up of 12 months. Methods: A total of 95 consecutive uncemented COC THAs were performed in 90 patients between January 2012 and July 2013. Of these, 49 patients (smaller-head group) received third generation and 41 patients (large-head group) received fourth generation COC prostheses. Harris hip score (HHS), Western Ontario and McMaster Universities Arthritis index (WOMAC), and ROM of the hip pre- and post-operatively were compared, as well as the presence of early complications. Results: Postoperative HHSs (88.4 vs. 89.3, p = 0.34) and WOMAC scores (12.0 vs. 11.0, p = 0.111) were not different between the groups. Postoperative flexion ROM was lower in the smaller-head group (98.8° vs. 106.1°, p < 0.001), but there were no differences in extension, abduction, adduction, internal rotation, and external rotation. One patient in each group reported a grinding noise. There was one dislocation (1.9%) in the smaller-head group, and none in the large-head group (p = 0.371). No infections or loosening of the components occurred. Conclusions: Large-head COC articulation provided better flexion, but functional outcomes and early complications are similar to the smaller-head COC.http://www.sciencedirect.com/science/article/pii/S231941701600010XCeramic-on-ceramic bearingEarly complicationsFunctional outcomeLarge-diameter femoral headTotal hip arthroplasty |
| spellingShingle | Yu-Der Lu Shih-Hsiang Yen Feng-Chih Kuo Jun-Wen Wang Ching-Jen Wang No benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic-on-ceramic total hip arthroplasty Biomedical Journal Ceramic-on-ceramic bearing Early complications Functional outcome Large-diameter femoral head Total hip arthroplasty |
| title | No benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic-on-ceramic total hip arthroplasty |
| title_full | No benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic-on-ceramic total hip arthroplasty |
| title_fullStr | No benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic-on-ceramic total hip arthroplasty |
| title_full_unstemmed | No benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic-on-ceramic total hip arthroplasty |
| title_short | No benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic-on-ceramic total hip arthroplasty |
| title_sort | no benefit on functional outcomes and dislocation rates by increasing head size to 36 mm in ceramic on ceramic total hip arthroplasty |
| topic | Ceramic-on-ceramic bearing Early complications Functional outcome Large-diameter femoral head Total hip arthroplasty |
| url | http://www.sciencedirect.com/science/article/pii/S231941701600010X |
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