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Risk Factors for Knee Stiffness in Distal Femoral Fractures
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Dong Wook Son, Hyoung Soo Kim, Woo Young Choi
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J Korean Fract Soc 2018;31(4):123-131. Published online October 31, 2018
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DOI: https://doi.org/10.12671/jkfs.2018.31.4.123
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 Abstract
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- PURPOSE
The aims of this study were to evaluate risk factors for knee stiffness after the fixation of distal femoral fractures, and to analyze the clinical and radiologic outcomes.
MATERIALS AND METHODS
This is a retrospective case control study of 104 consecutive patients who have a distal femoral fracture and were treated with a submuscular locking plate. The case group comprised of patients with 12-month postoperative range of motion (ROM) ≤90° or a history of manipulation under anesthesia. The case group was compared with the control group of patients with a 12-month postoperative ROM >90°. The possible risk factors were evaluated by univariate and logistic regression analysis. The postoperative ROM and Knee Society clinical rating system was evaluated for the clinical assessment and the distal femoral angle on a whole-extremity scanogram was measured for radiologic assessments.
RESULTS
Fifty-four patients were included in the study (14 in the case group, 40 in the control group). Univariate analysis showed that comminuted fracture, intra-articular fracture, open fracture, temporary external fixation, severe osteoarthritis, and prolonged immobilization placed patients at an increased risk for knee stiffness. On the other hand, multivariate logistic regression showed that an extensor mechanism injury was the only significant predictor (p=0.001; odds ratio, 42.0; 95% confidence interval, 5.0–350.7). The ROM and Knee Society score were significantly lower in the case group; however, the coronal alignment was similar in the case and control group.
CONCLUSION
Various factors that delay postoperative knee motion place patients at increased risk of knee stiffness. Understanding these risk factors may help surgeons prevent postoperative knee stiffness after distal femoral fractures. In particular, extensor mechanism injury, such as patella fracture or open quadriceps injury, was found to be an independent predictable factor associated with knee stiffness.
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Citations
Citations to this article as recorded by  - A Comprehensive Approach to Stiffness in Total Knee Arthroplasty
Brian P. Chalmers, Linda I. Suleiman, Peter K. Sculco, Matthew P. Abdel
The Journal of Arthroplasty.2025;[Epub] CrossRef - Staged Management for Distal Femur Fractures: Impacts on Reoperation, Stiffness, and Overall Outcomes
Matthew T. Yeager, Robert W. Rutz, Alex Roszman, Gerald McGwin, James E. Darnley, Joseph P. Johnson, Clay A. Spitler
Journal of Orthopaedic Trauma.2024; 38(11): 577. CrossRef - Outcome of the Masquelet Technique for Complex Bilateral Distal Femoral Bone Defects
Ziad A Aljaafri, Abdullah Alzahrani, Ali Alshehri, Ahmed AlHussain, Faisal Alzahrani, Khalid Alsheikh
Cureus.2023;[Epub] CrossRef - Efficacy of non-operative treatment of patients with knee arthrofibrosis using high-intensity home mechanical therapy: a retrospective review of 11,000+ patients
Shaun K. Stinton, Samantha J. Beckley, Thomas P. Branch
Journal of Orthopaedic Surgery and Research.2022;[Epub] CrossRef - Distal Femoral Replacement and Extensor Mechanism Repair Reinforced With Synthetic Mesh for Distal Femur Fracture With Patellar Ligament Avulsion
Charles Powell, Kristopher Sanders, Neal Huang, Luis Felipe Colón, Colton Norton
Arthroplasty Today.2022; 16: 31. CrossRef - The fragility of statistical significance in distal femur fractures: systematic review of randomized controlled trials
Michael Megafu, Hassan Mian, Emmanuel Megafu, Sulabh Singhal, Alexander Lee, Richawna Cassie, Paul Tornetta, Robert Parisien
European Journal of Orthopaedic Surgery & Traumatology.2022; 33(6): 2411. CrossRef - Association Between Femoral “Spike” Size After Intramedullary Nailing and Subsequent Knee Motion Surgery
Michael G. Schloss, Nathan N. O'Hara, Syed M. R. Zaidi, Zachary D. Hannan, Dimitrius Marinos, Jared Atchison, Alexandra Mulliken, Jason W. Nascone, Robert V. O'Toole
Journal of Orthopaedic Trauma.2021; 35(2): 100. CrossRef - Distal Femur Replacement Versus Surgical Fixation for the Treatment of Geriatric Distal Femur Fractures: A Systematic Review
Brett P. Salazar, Aaron R. Babian, Malcolm R. DeBaun, Michael F. Githens, Gustavo A. Chavez, L. Henry Goodnough, Michael J. Gardner, Julius A. Bishop
Journal of Orthopaedic Trauma.2021; 35(1): 2. CrossRef
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