kırıkkale uni med j The Journal of Kırıkkale University Faculty of Medicine 2148-9645 Kirikkale University 10.24938/kutfd.1838659 Health Services and Systems (Other) Sağlık Hizmetleri ve Sistemleri (Diğer) FUNCTIONAL OUTCOMES OF PATIENTS TREATED WITH MODULAR TUMOR RESECTION PROSTHESIS FOLLOWING PROXIMAL HUMERUS TUMOR Proksimal Humerus Tümörü Sonrası Modüler Tümör Rezeksiyon Protezi ile Tedavi Edilen Hastaların Fonksiyonel Sonuçları https://orcid.org/0000-0001-7034-2522 Gezer Mehmet Can Clinic of Orthopedics and Traumatology Mamak State Hospital, ANKARA, TÜRKİYE https://orcid.org/0000-0003-0783-510X Karaca Mustafa Onur Department of Orthopedics and Traumatology, Faculty of Medicine, Ankara University, ANKARA, TÜRKİYE https://orcid.org/0000-0003-0433-0253 Armangil Mehmet Department of Orthopedics and Traumatology, Faculty of Medicine, Ankara University, ANKARA, TÜRKİYE https://orcid.org/0000-0002-7669-6206 Yıldız Yusuf Department of Orthopedics and Traumatology, Faculty of Medicine, Ankara University, ANKARA, TÜRKİYE 04 27 2026 28 1 102 106 12 26 2025 01 26 2026 Copyright © 1999, The Journal of Kırıkkale University Faculty of Medicine 1999 The Journal of Kırıkkale University Faculty of Medicine

Objectives: This study aims to evaluate the functional outcomes of patients undergoing hemiarthroplasty with modular tumor prostheses for proximal humeral tumors. Material and Methods: A total of 28 patients were included in the study, with an average follow-up of 71.11 months. The mean age of participants was 47.8 years, and the cohort included various tumor types, including osteosarcoma and chondrosarcoma. Functional outcomes were assessed using the Modified Musculoskeletal Tumor Society evaluation system, the American Shoulder and Elbow Surgeons score, and the Visual Analog Scale for pain.Results: The postoperative results demonstrated an average Modified Musculoskeletal Tumor Society score of 21.68 and an American Shoulder and Elbow Surgeons score of 52.71, reflecting substantial improvements in both shoulder function and pain management. Notably, the Visual Analog Scale scores decreased significantly, from a preoperative average of 6.57 to a postoperative average of 3.79. This reduction in pain intensity indicates that patients experienced a marked alleviation of discomfort following the surgical intervention.Conclusion: Modular tumor prosthesis represents a reliable and effective treatment option for proximal humerus tumors. Although low infection and recurrence rates were noted, further research with larger sample sizes and longer follow-up is necessary to fully understand the long-term durability of the prosthesis and its potential complications, particularly in younger, more active patients.

Amaç: Bu çalışmanın amacı, proksimal humerus tümörleri nedeniyle modüler tümör protezi ile hemiartroplasti uygulanan hastaların fonksiyonel sonuçlarını değerlendirmektir.Gereç ve Yöntemler: Çalışmaya ortalama 71,11 aylık takip süresine sahip toplam 28 hasta dâhil edildi. Katılımcıların ortalama yaşı 47,8 yıl olup; osteosarkom ve kondrosarkom başta olmak üzere farklı tümör tipleri mevcuttu. Fonksiyonel sonuçlar Modifiye Muskuloskeletal Tümör Derneği değerlendirme sistemi, American Shoulder and Elbow Surgeons değerlendirme skoru ve ağrı düzeyini belirlemek için Görsel Analog Skala kullanılarak değerlendirildi.Bulgular: Ameliyat sonrası değerlendirmelerde ortalama Modifiye Muskuloskeletal Tümör Derneği skoru 21,68 ve American Shoulder and Elbow Surgeons değerlendirme skoru 52,71 olarak saptandı. Bu bulgular, omuz fonksiyonu ve ağrı kontrolünde belirgin bir iyileşme olduğunu göstermektedir. Özellikle Görsel Analog Skala skorlarının ameliyat öncesi ortalama 6,57’den ameliyat sonrası ortalama 3,79’a anlamlı şekilde düşmesi, cerrahi girişim sonrasında hastaların ağrılarında belirgin bir azalma olduğunu ortaya koymaktadır.Sonuç: Modüler tümör protezi, proksimal humerus tümörlerinin tedavisinde güvenilir ve etkili bir seçenek olarak değerlendirilebilir. Düşük enfeksiyon ve nüks oranları gözlenmiş olsa da, protezin uzun vadeli dayanıklılığını ve olası komplikasyonlarını—özellikle daha genç ve daha aktif hastalarda—tam olarak anlamak için daha büyük örneklem büyüklükleriyle ve daha uzun takip süreleriyle yapılacak ileri araştırmalara ihtiyaç vardır.

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