Journal of orthopaedics · 2026
Mobile-bearing UKA in elderly (≥75 Years) Indian cohorts: Excellent mid-term function and satisfaction despite comorbidities.
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Gulati Yashpal, Vaishya Raju, Singla Rahul, Bahl Vibhu, Vaish Abhishek
Аннотация
BACKGROUND AND AIMS: Given that life expectancy in India (∼72 years) is substantially lower than in Western countries, patients aged ≥75 years represent a comparatively older demographic. This cohort faces heightened risks with knee arthroplasty. Mobile-bearing unicompartmental knee arthroplasty (MB-UKA) offers a tissue-sparing alternative for isolated medial compartment osteoarthritis (OA). This study assesses mid-term functional and patient-reported outcomes in Indian septuagenarians and octogenarians undergoing UKA.
METHODS: Retrospective review of 23 cases (mean age 76.9 ± 2.0 years) undergoing 32 primary medial MB-UKA, from 2018 to 2023, by a single surgeon at a tertiary centre. Inclusion: Kellgren-Lawrence grade IV medial OA, varus <10°, flexion contracture <10°, ligament stability, intact lateral cartilage. Assessments: American Knee Society Score-Functional subscale (AKSS-F) and Forgotten Joint Score-12 (FJS-12) preoperatively and at 6 months, 1 year, 2 years, and 3 years. Paired t-tests assessed changes (p < 0.05; SPSS v29.0).
RESULTS: Body mass index (BMI) averaged 26.6 ± 3.4 kg/m2; comorbidities included hypertension (60.9%) and diabetes (30.4%). Laterality: 39.1% right, 21.7% left, 39.1% bilateral. AKSS-F improved from 47.8 ± 2.4 preoperatively to 57.2 ± 3.5 (6 months), 65.4 ± 2.8 (1 year), 71.3 ± 2.9 (2 years), and 77.1 ± 3.0 (3 years; p < 0.001 each), a 61% net gain (range 70-82). FJS-12 at 3 years: 87.8 ± 2.8 (range 84-94). No major complications (e.g., DVT, infection, loosening, or mortality).
CONCLUSIONS: MB-UKA delivers robust functional improvements, high satisfaction, and negligible morbidity in multimorbid carefully selected Indian elderly cohorts.
METHODS: Retrospective review of 23 cases (mean age 76.9 ± 2.0 years) undergoing 32 primary medial MB-UKA, from 2018 to 2023, by a single surgeon at a tertiary centre. Inclusion: Kellgren-Lawrence grade IV medial OA, varus <10°, flexion contracture <10°, ligament stability, intact lateral cartilage. Assessments: American Knee Society Score-Functional subscale (AKSS-F) and Forgotten Joint Score-12 (FJS-12) preoperatively and at 6 months, 1 year, 2 years, and 3 years. Paired t-tests assessed changes (p < 0.05; SPSS v29.0).
RESULTS: Body mass index (BMI) averaged 26.6 ± 3.4 kg/m2; comorbidities included hypertension (60.9%) and diabetes (30.4%). Laterality: 39.1% right, 21.7% left, 39.1% bilateral. AKSS-F improved from 47.8 ± 2.4 preoperatively to 57.2 ± 3.5 (6 months), 65.4 ± 2.8 (1 year), 71.3 ± 2.9 (2 years), and 77.1 ± 3.0 (3 years; p < 0.001 each), a 61% net gain (range 70-82). FJS-12 at 3 years: 87.8 ± 2.8 (range 84-94). No major complications (e.g., DVT, infection, loosening, or mortality).
CONCLUSIONS: MB-UKA delivers robust functional improvements, high satisfaction, and negligible morbidity in multimorbid carefully selected Indian elderly cohorts.