Related Experiment Video
Updated: May 7, 2026
08:15
Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
Published on: February 17, 2023
[Tönnis and Kalchschmidt triple pelvic osteotomy].
A R Zahedi1, K Kalchschmidt, B-D Katthagen
1Orthopädische Klinik, Klinikum Dortmund, Beurhausstr. 40, 44137, Dortmund, Deutschland, andre-ramin.zahedi@klinikumdo.de.
Operative Orthopadie Und Traumatologie
|October 3, 2013
Summary
This study demonstrates that three precise osteotomies can effectively reposition the acetabulum for improved coverage in dysplastic hips. The procedure yields good to very good results in most patients, with long-term success observed.
Area of Science:
- Orthopedic Surgery
- Hip Reconstruction
- Acetabular Dysplasia
Context:
- Acetabular dysplasia is a condition characterized by inadequate coverage of the femoral head by the acetabulum.
- This can lead to hip pain, instability, and early-onset osteoarthritis.
- Surgical hip reconstruction aims to improve acetabular coverage and restore hip joint function.
Purpose:
- To describe a surgical technique involving three precise osteotomies for acetabular repositioning.
- To evaluate the clinical outcomes of this procedure in patients with dysplastic hips.
Summary:
- The described surgical technique involves three osteotomies (ischium, pubis, and ilium) to mobilize and reposition the acetabulum.
- Osteosynthesis is achieved with screws.
- Postoperative management includes restricted weight-bearing for 12 weeks and limited flexion for 6 weeks.
Impact:
- The procedure demonstrated good to very good results in 80.4% of patients at an average follow-up of 11.5 years.
- Contraindications include advanced arthrosis (Tönnis level 2) and obesity, which are associated with poorer outcomes.
- This technique offers a viable solution for acetabular dysplasia, improving hip function and patient-reported outcomes.
