Measured Resection as Gap Balance Method in Mobile‐Bearing Medial Unicompartmental Knee Arthroplasty: A Randomized Controlled Trial
ABSTRACT Objective Gap balancing is a vital process during mobile‐bearing unicompartmental knee arthroplasty (MB‐UKA). However, this process commonly depends on the surgeon's experience and lacks specific unified standards. This study aimed to propose and evaluate a novel “measured resection” m...
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| Format: | Article |
| Language: | English |
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Wiley
2025-02-01
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| Series: | Orthopaedic Surgery |
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| Online Access: | https://doi.org/10.1111/os.14346 |
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| author | Qian Liu Jianhua Ren Wenhui Zhang Tangzhao Liang Zhe Wang Siwei Xie Yuhang Li Jianfeng Hou Kun Wang Ronghan He |
| author_facet | Qian Liu Jianhua Ren Wenhui Zhang Tangzhao Liang Zhe Wang Siwei Xie Yuhang Li Jianfeng Hou Kun Wang Ronghan He |
| author_sort | Qian Liu |
| collection | DOAJ |
| description | ABSTRACT Objective Gap balancing is a vital process during mobile‐bearing unicompartmental knee arthroplasty (MB‐UKA). However, this process commonly depends on the surgeon's experience and lacks specific unified standards. This study aimed to propose and evaluate a novel “measured resection” method for gap balance in MB‐UKA. Methods This prospective study included 49 consecutive patients (52 knees) who underwent MB‐UKA from February 1, 2023, to September 1, 2023. Gap balance was achieved by the traditional “two‐finger” method (Group 1, 26 knees) or the measured resection method (Group 2, 26 knees). The novel “measured resection” method was performed by measuring the thickness of the resected posterior femoral condyle and resected medial posterior tibial plateau to assess proper meniscal bearing thickness. Data were collected at baseline and the 6‐month follow‐up. Prosthetic angles, range of motion (ROM), visual analog scale (VAS) score, Oxford knee score (OKS), and Global Perceived Scale (GPE) were used to evaluate clinical outcomes. Independent samples t‐test and Mann–Whitney U test were used to compare the differences. Results There were significant improvements in all measured outcomes at the 6‐month follow‐up from baseline in both groups (p < 0.01). Patients using measured resection method showed better ROM (130° vs. 120°, p = 0.007), VAS score (1 vs. 2, p = 0.013), and OKS scores (39.9 vs. 38.1, p = 0.013) at 6‐month follow‐up than the traditional “two‐finger” method group. The prosthetic angles, ROM improvement, and GPE showed no significant difference between the groups (p > 0.05). Conclusions The measured resection method is a reliable method for assisting surgeons in choosing the ideal meniscal bearing thickness in MB‐UKA to achieve proper gap balance and gain better clinical outcomes. Trial Registration ClinicalTrials.gov (NCT03815448) |
| format | Article |
| id | doaj-art-6f134a400b2541a0bc974292b07d3e85 |
| institution | Kabale University |
| issn | 1757-7853 1757-7861 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Orthopaedic Surgery |
| spelling | doaj-art-6f134a400b2541a0bc974292b07d3e852025-02-03T03:10:59ZengWileyOrthopaedic Surgery1757-78531757-78612025-02-0117260361310.1111/os.14346Measured Resection as Gap Balance Method in Mobile‐Bearing Medial Unicompartmental Knee Arthroplasty: A Randomized Controlled TrialQian Liu0Jianhua Ren1Wenhui Zhang2Tangzhao Liang3Zhe Wang4Siwei Xie5Yuhang Li6Jianfeng Hou7Kun Wang8Ronghan He9Department of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaDepartment of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaDepartment of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaDepartment of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaDepartment of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaDepartment of Environmental Health and Engineering Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USADepartment of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaDepartment of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaDepartment of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaDepartment of Joint and Trauma Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou ChinaABSTRACT Objective Gap balancing is a vital process during mobile‐bearing unicompartmental knee arthroplasty (MB‐UKA). However, this process commonly depends on the surgeon's experience and lacks specific unified standards. This study aimed to propose and evaluate a novel “measured resection” method for gap balance in MB‐UKA. Methods This prospective study included 49 consecutive patients (52 knees) who underwent MB‐UKA from February 1, 2023, to September 1, 2023. Gap balance was achieved by the traditional “two‐finger” method (Group 1, 26 knees) or the measured resection method (Group 2, 26 knees). The novel “measured resection” method was performed by measuring the thickness of the resected posterior femoral condyle and resected medial posterior tibial plateau to assess proper meniscal bearing thickness. Data were collected at baseline and the 6‐month follow‐up. Prosthetic angles, range of motion (ROM), visual analog scale (VAS) score, Oxford knee score (OKS), and Global Perceived Scale (GPE) were used to evaluate clinical outcomes. Independent samples t‐test and Mann–Whitney U test were used to compare the differences. Results There were significant improvements in all measured outcomes at the 6‐month follow‐up from baseline in both groups (p < 0.01). Patients using measured resection method showed better ROM (130° vs. 120°, p = 0.007), VAS score (1 vs. 2, p = 0.013), and OKS scores (39.9 vs. 38.1, p = 0.013) at 6‐month follow‐up than the traditional “two‐finger” method group. The prosthetic angles, ROM improvement, and GPE showed no significant difference between the groups (p > 0.05). Conclusions The measured resection method is a reliable method for assisting surgeons in choosing the ideal meniscal bearing thickness in MB‐UKA to achieve proper gap balance and gain better clinical outcomes. Trial Registration ClinicalTrials.gov (NCT03815448)https://doi.org/10.1111/os.14346clinical outcomegap balancemeniscal bearing thicknessmobile‐bearing unicompartmental knee arthroplastyresected bone pieces |
| spellingShingle | Qian Liu Jianhua Ren Wenhui Zhang Tangzhao Liang Zhe Wang Siwei Xie Yuhang Li Jianfeng Hou Kun Wang Ronghan He Measured Resection as Gap Balance Method in Mobile‐Bearing Medial Unicompartmental Knee Arthroplasty: A Randomized Controlled Trial Orthopaedic Surgery clinical outcome gap balance meniscal bearing thickness mobile‐bearing unicompartmental knee arthroplasty resected bone pieces |
| title | Measured Resection as Gap Balance Method in Mobile‐Bearing Medial Unicompartmental Knee Arthroplasty: A Randomized Controlled Trial |
| title_full | Measured Resection as Gap Balance Method in Mobile‐Bearing Medial Unicompartmental Knee Arthroplasty: A Randomized Controlled Trial |
| title_fullStr | Measured Resection as Gap Balance Method in Mobile‐Bearing Medial Unicompartmental Knee Arthroplasty: A Randomized Controlled Trial |
| title_full_unstemmed | Measured Resection as Gap Balance Method in Mobile‐Bearing Medial Unicompartmental Knee Arthroplasty: A Randomized Controlled Trial |
| title_short | Measured Resection as Gap Balance Method in Mobile‐Bearing Medial Unicompartmental Knee Arthroplasty: A Randomized Controlled Trial |
| title_sort | measured resection as gap balance method in mobile bearing medial unicompartmental knee arthroplasty a randomized controlled trial |
| topic | clinical outcome gap balance meniscal bearing thickness mobile‐bearing unicompartmental knee arthroplasty resected bone pieces |
| url | https://doi.org/10.1111/os.14346 |
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