A comparison of short-term clinical and radiological results of Tönnis and Steel pelvic osteotomies in patients with acetabular dysplasia
Mehmet Nuri Konya1, Ümit Tuhanioğlu2, Ahmet Aslan1, Timur Yıldırım3, Ayşegül Bursalı3, Vedat Şahin3, Bilal Demir3
1Afyonkarahisar Devlet Hastanesi, Ortopedi ve Travmatoloji Klinigi, Afyonkarahisar, Türkiye
2Adana Numune Eğitim ve Araştırma Hastanesi, Ortopedi ve Travmatoloji Kliniği, Adana, Türkiye
3Baltalimanı Kemik Hastalıkları Eğitim ve Araştırma Hastanesi, Ortopedi ve Travmatoloji Kliniği, İstanbul, Türkiye
Keywords: Acetabulum; congenital; hip/hip dislocation; osteoarthritis; osteotomy.
Objectives: This study aims to compare short-term clinical and radiological results of adult patients with acetabular dysplasia undergoing Tönnis osteotomy or Steel triple pelvic osteotomy.
Patients and methods: Between March 2003 and January 2010, clinical and radiologic results in 61 patients who were operated due to acetabular dysplasia at Baltalimanı Bone and Joint Diseases Hospital were retrospectively analyzed. The patients were divided into two groups including those undergoing Tönnis osteotomy (Tönnis group) or Steel osteotomy (Steel group). For each patient, anteroposterior and false-profile radiographs of the pelvis were taken and anterior center edge (ACE), lateral center edge (LCE), Sharp angles and acetabular coverage were measured. The relationship between femoral head and acetabulum was assessed. Harris hip score was used for the clinical evaluation.
Results: According to the evaluation of the clinical and radiological results, postoperative scores were improved significantly in both groups, compared to preoperative scores (p<0.01). No statistically significant difference was found between the groups in terms of improvements in the radiological and clinical scores, except ACE angle (p<0.01).
Conclusion: Our study results suggest that Tönnis and Steel osteotomies offer satisfactory short-term results in the surgical treatment of adult patients with mild to moderate dysplasia.