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Updated: Jan 10, 2026

Orthopedic Robot-Assisted Femoral Neck System in the Treatment of Femoral Neck Fracture
Published on: March 3, 2023
Treatment of Pathological Femoral Fractures Caused by Fibrous Dysplasia Using the Bridging Combination Internal
Liang Zhao1, Qiao Yuan1, Juncheng Shen1
1Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China.
Abstract:
BACKGROUND Fibrous dysplasia (FD) is a rare skeletal lesion. Current FD therapies center on surgery, the only modality with curative potential. Pharmacologic agents show promise but still lack large-scale evidence of halting disease progression. However, there is currently no unified surgical protocol for FD. Therefore, identifying an effective surgical approach remains important. CASE REPORT We report a case of a 29-year-old Chinese male patient with polyostotic fibrous dysplasia (PFD), presenting with Shepherd's crook deformity and a pathological fracture in the subtrochanteric region of the left femur. We applied a bridging combination internal fixation system for the first time in this patient. The patient adhered to our postoperative rehabilitation protocol for functional recovery and progressive weight-bearing exercises and was followed up regularly. RUSH (Radiographic Union Scale for Hip) scores were 9, 22, and 28 at 1, 3, and 6 months after surgery, respectively. In addition, the left hip function score improved from 28 preoperatively to 88 at 6 months postoperatively. These findings indicate satisfactory fracture healing and excellent recovery of hip function. CONCLUSIONS This novel bridging combination internal fixation system offers the advantages of minimal invasiveness, stable fixation, and easy contouring, and it effectively treats femoral pathological fractures caused by fibrous dysplasia; thus, it is expected to become a viable surgical option for such fractures in the future.
Insights
A novel internal fixation system effectively treated a pathological femur fracture in polyostotic fibrous dysplasia (PFD). This minimally invasive approach demonstrated stable fixation and excellent hip function recovery, offering a promising surgical option.
Area of Science:
- Orthopedics
- Skeletal Dysplasias
- Trauma Surgery
Background:
- Fibrous dysplasia (FD) is a rare bone disorder.
- Current treatments for FD primarily involve surgery, with limited evidence for pharmacologic agents.
- A standardized surgical protocol for FD is lacking, highlighting the need for effective surgical strategies.
Purpose of the Study:
- To report the successful application of a novel bridging combination internal fixation system.
- To evaluate the efficacy of this system in treating femoral pathological fractures associated with polyostotic fibrous dysplasia (PFD).
Main Methods:
- A case report of a 29-year-old male with PFD presenting with a subtrochanteric left femur fracture.
- Application of a bridging combination internal fixation system.
- Postoperative rehabilitation protocol including functional recovery and progressive weight-bearing exercises.
- Follow-up using Radiographic Union Scale for Hip (RUSH) scores and hip function scores.
Main Results:
- The bridging combination internal fixation system provided stable fixation and was minimally invasive.
- RUSH scores improved significantly from 9 at 1 month to 28 at 6 months post-surgery.
- Hip function score improved from 28 preoperatively to 88 at 6 months post-surgery, indicating satisfactory healing and functional recovery.
Conclusions:
- The novel bridging combination internal fixation system is effective for treating femoral pathological fractures in FD.
- This system offers advantages such as minimal invasiveness, stable fixation, and ease of contouring.
- It is a potentially viable surgical option for managing such fractures in the future.
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