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Updated: Jun 20, 2026

Pseudofracture: An Acute Peripheral Tissue Trauma Model
Published on: April 18, 2011
[Patella fracture]
Sven-Oliver Dietz1, Martin-Henri Hessmann, Erol Gercek
1Klinik und Poliklinik für Unfallchirurgie, Klinikum der Johannes Gutenberg-Universität Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany. dietz@unfall.klinik.uni-mainz.de
Objective:
Reconstruction of the extensor apparatus of the knee joint. Open reduction and stable internal fixation of patella fractures. Exact reconstruction of the articular surface of the patellofemoral joint.
Indications:
Open and closed fractures. Fractures with an intraarticular incongruity (> 2 mm). Incapability of extension of the knee also in nondisplaced fractures of the patella. In the context of internal fixations of additional periarticular fractures of the knee joint.
Contraindications:
Compromised general health status or associated injuries. Compromised local soft-tissue situation (contamination, poor soft-tissue cover). Relative: nondisplaced transverse fractures (no displacement in 40 degrees of flexion). Relative: nondisplaced longitudinal fractures(3). Relative: nondisplaced radiating fractures(3). Relative: nondisplaced fractures of the distal pole without involvement of the joint surface and intact extensor apparatus(3).
Surgical Technique:
Longitudinal parapatellar incision. Tension band wiring. Lag screw osteosynthesis. Combination of tension band wiring and lag screws. Patellectomy (partial/complete).
Postoperative Management:
Thrombosis prophylaxis. Early physiotherapy. Knee brace.
Results:
70% good to excellent results. 30% chronic pain and posttraumatic arthritis. Loss of motion (limited extension).
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