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Updated: Apr 30, 2026
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Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
Published on: February 17, 2023
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Three-dimensional preoperative planning software and a novel information transfer technology improve glenoid
Joseph Iannotti1, Justin Baker2, Eric Rodriguez1
1Department of Orthopaedic Surgery, Cleveland Clinic, 9500 Euclid Avenue, A-41, Cleveland, OH 44195. E-mail address for J. Iannotti: iannotj@ccf.org.
Summary
A novel 3-D surgical planning method significantly improved glenoid guide pin accuracy in total shoulder arthroplasty. This patient-specific approach enhances precision for better joint replacement outcomes.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Surgical Planning
Background:
- Total shoulder arthroplasty (TSA) requires precise glenoid component placement for optimal function and longevity.
- Current methods for glenoid guide pin positioning may lack the necessary accuracy.
- Novel techniques utilizing 3-D planning and patient-specific models are being explored to enhance surgical precision.
Purpose of the Study:
- To evaluate a novel surgical method employing 3-D preoperative planning software and a patient-specific surgical model.
- To assess the impact of this method on the positioning accuracy of the glenoid guide pin in TSA.
- To compare the novel method against standard surgical techniques.
Main Methods:
- Nine bone models with shoulder pathology were used.
- Surgeons placed guide pins using three techniques: standard instrumentation, standard instrumentation with 3-D planning, and a 3-D planning with a reusable transfer device.
- Postoperative 3-D CT scans were used to measure deviations between planned and actual pin locations and trajectories.
Main Results:
- Three-dimensional (3-D) preoperative planning significantly improved guide pin accuracy compared to 2-D imaging.
- The novel method using 3-D planning and a patient-specific model further enhanced accuracy in version, inclination, and location.
- Improvements in accuracy were statistically significant (p < 0.001) across all measured parameters.
Conclusions:
- Both 3-D preoperative planning and the use of a patient-specific bone model with a transfer device improved glenoid guide pin positioning accuracy.
- Enhanced accuracy in glenoid component placement is expected to improve the functional outcomes and durability of total shoulder joint replacements.
