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Dunbar RP, Cooke M, Tornetta P, Born CT, Collinge C, Egol KA, Ertl JP, Friess DM, Humphrey CA, Jones CB, Mullis BH, Ostrum RF, Perez E, Phieffer L, Ricci WM, Sagi HC, Schmidt AH, Sems A, Siegel J, Teague DC, Zonno A. The effect of coronal plane angulation on patient reported outcome measures of operatively treated distal femur fractures: A multi-center prospective evaluation. Injury 2024; 55:111597. [PMID: 38878381 DOI: 10.1016/j.injury.2024.111597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/15/2024] [Accepted: 04/28/2024] [Indexed: 07/26/2024]
Abstract
OBJECTIVES The goal of this trial was to determine whether coronal plane angulation affects functional and clinical outcomes after the fixation of distal femur fractures. DESIGN Multicenter, randomized controlled trial SETTING: 20 academic trauma centers PATIENTS/PARTICIPANTS: 156 patients with distal femur fractures were enrolled. 123 patients were followed 12 months. There was clinical outcome data available for 105 patients at 3 months, 95 patients at 6 months and 81 patients at one year. INTERVENTION Lateral locked plating or retrograde intramedullary nailing MAIN OUTCOME MEASUREMENTS: Radiographic alignment, functional scoring including SMFA, Bother Index, and EQ-5D. Clinical scoring of walking ability, need for ambulatory support and ability to manage stairs. RESULTS At 3 months, there was no difference between groups (varus, neutral or valgus) with respect to any of the clinical functional outcome scores measured. At 6 months, compared to those with neutral alignment, patients with varus angulation had a worse Stair Climbing score (4.33 vs. 2.91, p = 0.05). At 12 months, the average patient with neutral or valgus alignment needed less ambulatory support than the average patient in varus. Walking distance ability was no different between the groups at any time point. With respect to the validated patient-based outcome scores, we found no statistical difference in in the SMFA, Bother, or EQ-5D between patients with valgus or varus mal-alignment and those with neutral alignment at any time point (p > 0.05). Regardless of coronal angulation, the SMFA trended towards lower (improved) scores over time, while EQ-5D scores for patients with varus angulation did not improve over time. CONCLUSIONS Valgus angulation and neutral angulation may be better tolerated in terms of clinical outcomes like stair climbing and need for ambulatory support than varus angulation, though patient reported outcome measures like the SMFA, Bother Index and EQ-5D show no statistical significance. Most patients with distal femur fractures tend to improve during the first year after injury but many remain significantly affected at 12 months post injury.
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Affiliation(s)
- R P Dunbar
- Harborview Medical Center/University of Washington, Seattle, WA, USA.
| | - M Cooke
- Stanford University School of Medicine, Palo Alto, CA, USA
| | - P Tornetta
- Boston University Medical Center, Boston, MA, USA
| | - C T Born
- Rhode Island Hospital, Brown University, Providence, RI, USA
| | - C Collinge
- Orthopaedic Specialty Associates, Fort Worth, TX, USA
| | - K A Egol
- New York University/Hospital for Joint Diseases, New York, NY, USA
| | - J P Ertl
- Indiana University Medical Center, Indianapolis, IN, USA
| | - D M Friess
- Oregon Health and Science University Hospital, Portland, OR, USA
| | - C A Humphrey
- University of Rochester Medical Center, Rochester, NY, USA
| | - C B Jones
- Creighton University Medical, Dignity Health Phoenix, AZ, USA
| | - B H Mullis
- Indiana University Medical Center, Indianapolis, IN, USA
| | - R F Ostrum
- University of North Carolina, Chapel Hill, NC, USA
| | - E Perez
- The Campbell Clinic, Nashville TN, USA
| | - L Phieffer
- The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - W M Ricci
- Hospital for Special Surgery, New York, NY, USA
| | - H C Sagi
- University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - A H Schmidt
- Hennepin County Medical Center, Minneapolis, MN, USA
| | - A Sems
- Mayo Clinic Hospital, St. Mary's Campus, Rochester, MN, USA
| | - J Siegel
- University of North Carolina, Chapel Hill, NC, USA
| | - D C Teague
- University of Oklahoma Medical Center, Oklahoma City, OK, USA
| | - A Zonno
- Rhode Island Hospital, Brown University, Providence, RI, USA
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Yoon YC, Kim Y, Pesante BD, Chun YS, Lee SH, Sohn HS. Comparative study of retrograde intramedullary nailing versus locking extramedullary plating in complete articular fractures with metaphyseal comminution of the distal femur. Arch Orthop Trauma Surg 2024; 144:2109-2118. [PMID: 38466373 DOI: 10.1007/s00402-024-05265-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/27/2024] [Indexed: 03/13/2024]
Abstract
INTRODUCTION Fractures of the distal femur with metaphyseal comminution and complete intra-articular involvement (AO/OTA classifications 33C2 and 33C3) present challenges for reduction and fixation. However, an optimal fixation method remains unknown. This study aimed to compare the clinical and radiographic outcomes of locking extramedullary plating (LEP) and retrograde intramedullary nailing (RIN) for complete distal femoral intra-articular fractures with metaphyseal comminution. MATERIALS AND METHODS Between January 2016 and May 2022, 80 patients (45 men and 35 women; average age, 56.7 years) diagnosed with AO/OTA 33C2 and 33C3 were treated with either LEP or RIN and followed up for at least one year. Post-operative evaluations included radiographic assessments of bone union rate, timing, and alignment. Clinically, the knee joint range of motion (ROM), lower extremity functional scale (LEFS), and Kellgren and Lawrence (KL) grade were analyzed. The complications were also compared. RESULTS 36 underwent LEP and 44 underwent RIN. Bone union was observed in 69.4% and 63.6% of the patients in the LEP and RIN groups, respectively (p = 0.64). The average union time was 6.9 months for the LEP group and 6.6 months for the RIN group (p = 0.51). A tendency toward varus deformity was observed in the RIN group, although the difference was not statistically significant. No significant differences were observed in knee ROM, LEFS, or KL grade. Complications included non-union (33.8%; RIN, 11; LEP, 16), varus deformity (5%; RIN, 4; LEP, 0), infection (1.3%; RIN, 0; LEP, 1), heterotrophic ossification (1.3%; RIN, 0; LEP, 1), and wound dehiscence (2.5%; RIN, 2; LEP, 0). CONCLUSIONS The surgical fixation methods, RIN and LEP, for complete distal femoral intra-articular fractures with metaphyseal comminution showed similar clinical and radiological outcomes. However, regardless of the type of fixation device used, there was a reduced rate of bone union owing to high energy and a less favorable prognosis.
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Affiliation(s)
- Yong-Cheol Yoon
- Orthopedic Trauma Division, Trauma Center, Gachon University College of Medicine, Namdong-gu, Incheon, Republic of Korea
| | - Youngwoo Kim
- Department of Orthopedic Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Gyeonggi-do, Republic of Korea
| | - Benjamin D Pesante
- Department of Orthopedics, Denver Health Medical Center, Denver, CO, USA
| | - You Seung Chun
- Department of Orthopedic Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Gyeonggi-do, Republic of Korea
| | - Sang Ho Lee
- Department of Orthopedic Surgery, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do, Republic of Korea
| | - Hoon-Sang Sohn
- Department of Orthopedic Surgery, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do, Republic of Korea.
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Thorne TJ, DeKeyser GJ, Clapp I, Haller JM. Risk of reverse golf club deformity with medial plating of distal femur fracture. Arch Orthop Trauma Surg 2024; 144:1211-1220. [PMID: 38265463 DOI: 10.1007/s00402-023-05173-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 12/04/2023] [Indexed: 01/25/2024]
Abstract
INTRODUCTION This study described a deformity induced by medial plating of supracondylar distal femur fractures using plates that are precontoured for other anatomic locations. MATERIALS AND METHODS OTA/AO 33A fractures were created in 12 sawbone femurs and fixed with either a proximal humerus locking plate (PH), an ipsilateral lateral tibial plateau plate (LTP), or an ipsilateral medial distal tibial plate (MDT). A motion capture system measured changes in length and rotation of the distal femur as the plate was applied. Each plate underwent four trials and the mean and standard deviation (SD) for each measurement was reported. An analysis of variance with post hoc Tukey test compared malreduction measures between plate types. RESULTS All plates consistently created a varus deformity. There was lateral lengthening with a compensatory medial shortening and an increase in the lateral distal femoral angle. The distal fracture fragment was laterally translated, and internally rotated. The PH plate had significantly greater lateral length (27.39 mm SD 4.78, p = 0.007), shorter medial length (13.57 mm SD 4.99, p = 0.028), greater lateral translation (28.82 mm SD 5.70, p = 0.010) and greater widening of the lateral distal femoral angle (28.54° SD 4.98, p < 0.001) than the LTP and MDT plates. The MDT plate had significantly greater angulation anteriorly (8.40° SD 1.07, p < 0.001) and laterally (7.63° SD 3.10, p = 0.002) than the PH and LTP plates. There was no significant difference between plates in internal rotation (PH: 3.07° SD 2.79; LTP: 2.05° SD 1.05; MDT 3.81° SD 3.56; p = 0.659). CONCLUSION When dual plating supracondylar distal femur fractures, poor plate positioning and a mismatch between plate contour and the slope of the medial distal femur can lead to varus angulation, internal rotation, and lateral translation or a "reverse golf club deformity". After comparing three types of precontoured plates, the authors recommend initial evaluation of the ipsilateral proximal tibial plate when placing a plate along the medial distal femur. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Tyler J Thorne
- Department of Orthopaedic Surgery, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA
| | | | - Ian Clapp
- Department of Orthopaedic Surgery, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA
| | - Justin M Haller
- Department of Orthopaedic Surgery, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA.
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Stockton DJ, O'Hara NN, Brodke DJ, McKibben N, Healey K, Goch A, Demyanovich H, Devana S, Hernandez A, Burke CE, Gupta J, Marchand LS, Dekeyser GJ, Steffenson L, Shymon SJ, Fairres MJ, Perdue PW, Barber C, Atassi OH, Mitchell TW, Working ZM, Black LO, El Naga AN, Roddy E, Hogue M, Gulbrandsen T, Morellato J, Gillon WH, Walters MM, Hempen E, Slobogean GP, Lee C, O'Toole RV. Technical Factors Contributing to Nonunion in Supracondylar Distal Femur Fractures Treated With Lateral Locked Plating: A Risk-Stratified Analysis. J Orthop Trauma 2024; 38:49-55. [PMID: 37559208 DOI: 10.1097/bot.0000000000002680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/31/2023] [Indexed: 08/11/2023]
Abstract
OBJECTIVE To identify technical factors associated with nonunion after operative treatment with lateral locked plating. METHODS DESIGN Retrospective cohort study. SETTING Ten Level I trauma centers. PATIENT SELECTION CRITERIA Adult patients with supracondylar distal femur fractures (OTA/AO type 33A or C) treated with lateral locked plating from 2010 through 2019. OUTCOME MEASURES AND COMPARISONS Surgery for nonunion stratified by risk for nonunion. RESULTS The cohort included 615 patients with supracondylar distal femur fractures. The median patient age was 61 years old (interquartile range: 46 -72years) and 375 (61%) were female. Observed were nonunion rates of 2% in a low risk of nonunion group (n = 129), 4% in a medium-risk group (n = 333), and 14% in a high-risk group (n = 153). Varus malreduction with an anatomic lateral distal femoral angle greater than 84 degrees, was associated with double the odds of nonunion compared to those without such varus [odds ratio, 2.1; 95% confidence interval (CI), 1.1-4.2; P = 0.03]. Malreduction by medial translation of the articular block increased the odds of nonunion, with 30% increased odds per 4 mm of medial translation (95% CI, 1.0-1.6; P = 0.03). Working length increased the odds of nonunion in the medium risk group, with an 18% increase in nonunion per 10-mm increase in working length (95% CI, 1.0-1.4; P = 0.01). Increased proximal screw density was protective against nonunion (odds ratio, 0.71; 95% CI, 0.53-0.92; P = 0.02) but yielded lower mRUST scores with each 0.1 increase in screw density associated with a 0.4-point lower mRUST (95% CI, -0.55 to -0.15; P < 0.001). Lateral plate length and type of plate material were not associated with nonunion. ( P > 0.05). CONCLUSIONS Malreduction is a surgeon-controlled variable associated with nonunion after lateral locked plating of supracondylar distal femur fractures. Longer working lengths were associated with nonunion, suggesting that bridge plating may be less likely to succeed for longer fractures. LEVEL OF EVIDENCE Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- David J Stockton
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Nathan N O'Hara
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Dane J Brodke
- Department of Orthopaedic Surgery, University of California Los Angeles, Los Angeles, CA
| | - Natasha McKibben
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Kathleen Healey
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Abraham Goch
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Haley Demyanovich
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Sai Devana
- Department of Orthopaedic Surgery, University of California Los Angeles, Los Angeles, CA
| | - Adolfo Hernandez
- Department of Orthopaedic Surgery, University of California Los Angeles, Los Angeles, CA
| | - Cynthia E Burke
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Jayesh Gupta
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Lucas S Marchand
- Department of Orthopaedics, University of Utah Hospital, Salt Lake City, UT
| | - Graham J Dekeyser
- Department of Orthopaedics, University of Utah Hospital, Salt Lake City, UT
| | - Lillia Steffenson
- Department of Orthopaedics, University of Utah Hospital, Salt Lake City, UT
| | - Stephen J Shymon
- Department of Orthopaedic Surgery, Harbor-UCLA Medical Center, Torrance, CA
| | - Marshall J Fairres
- Department of Orthopaedic Surgery, Harbor-UCLA Medical Center, Torrance, CA
| | - Paul W Perdue
- Department of Orthopaedic Surgery, Virginia Commonwealth University, Richmond, VA
| | - Colby Barber
- Department of Orthopaedic Surgery, Virginia Commonwealth University, Richmond, VA
| | - Omar H Atassi
- Department of Orthopedic Surgery, Baylor College of Medicine, Houston, TX
| | - Thomas W Mitchell
- Department of Orthopedic Surgery, Baylor College of Medicine, Houston, TX
| | - Zachary M Working
- Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR
| | - Loren O Black
- Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR
| | - Ashraf N El Naga
- Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, CA
| | - Erika Roddy
- Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, CA
| | - Matthew Hogue
- Department of Orthopedics and Rehabilitation, University of Iowa, Iowa City, IA; and
| | - Trevor Gulbrandsen
- Department of Orthopedics and Rehabilitation, University of Iowa, Iowa City, IA; and
| | - John Morellato
- Department of Orthopaedic Surgery and Rehabilitation, University of Mississippi Medical, Center, Jackson, MS
| | - W Hunter Gillon
- Department of Orthopaedic Surgery and Rehabilitation, University of Mississippi Medical, Center, Jackson, MS
| | - Murphy M Walters
- Department of Orthopaedic Surgery and Rehabilitation, University of Mississippi Medical, Center, Jackson, MS
| | - Eric Hempen
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Gerard P Slobogean
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
| | - Christopher Lee
- Department of Orthopaedic Surgery, University of California Los Angeles, Los Angeles, CA
| | - Robert V O'Toole
- Department of Orthopaedics, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD
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Andring NA, Kaupp SM, Henry KA, Helmig KC, Babcock S, Halvorson JJ, Pilson HT, Carroll EA. Dual Plate Fixation of Periprosthetic Distal Femur Fractures. J Orthop Trauma 2024; 38:36-41. [PMID: 37684010 DOI: 10.1097/bot.0000000000002695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
OBJECTIVES Dual implants for distal femur periprosthetic fractures is a growing area of interest for these challenging fractures with dual plating (DP) emerging as a viable construct for these injuries. In the current study, an experience with DP constructs is described. METHODS DESIGN Retrospective case series with comparison group. SETTING Level 1 academic trauma center. PATIENT SELECTION CRITERIA Adults >50 years old sustaining comminuted OTA/AO 33-A2 or 33-A3 DFPF treated with either DP or a single distal femur locking plating (DFLP). Patients with simple 33-A1 fractures were excluded. Prior to 2018, patients underwent DFLP after which the treatment of choice became DP. OUTCOME MEASURES AND COMPARISONS Reoperation rate, alignment, and complications. RESULTS 34 patients treated with DFLP and 38 with DP met inclusion and follow up criteria. Average follow up was 18.2 ± 13.8 months in the DFLP group and 19.8 ± 16.1 months in the DP group ( P = 0.339). The average patient age in the DFLP group was 74.8 ± 7.3 years compared to 75.9 ± 11.3 years in the DP group. There were no statistical differences in demographics, fracture morphology, loss of reduction, or reoperation for any cause ( P >.05). DP patients were more likely to be weight bearing in the twelve-week postoperative period ( P <0.001) and return to their baseline ambulatory status ( P = 0.004) compared to DFLP patients. CONCLUSIONS Dual plating of distal femoral periprosthetic fractures maintained coronal alignment with a low reoperation rate even with immediate weight bearing and these patients regained baseline level of ambulation more reliably as compared to patients treated with a single distal femoral locking plate. LEVEL OF EVIDENCE Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Paulsson M, Ekholm C, Tranberg R, Rolfson O, Geijer M. Using a Traction Table for Fracture Reduction during Minimally Invasive Plate Osteosynthesis (MIPO) of Distal Femoral Fractures Provides Anatomical Alignment. J Clin Med 2023; 12:4044. [PMID: 37373737 DOI: 10.3390/jcm12124044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/05/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
INTRODUCTION Fracture reduction and fixation of distal femur fractures are technically demanding. Postoperative malalignment is still commonly reported after minimally invasive plate osteosynthesis (MIPO). We evaluated the postoperative alignment after MIPO using a traction table with a dedicated femoral support. METHODS The study included 32 patients aged 65 years or older with distal femur fractures of all AO/OTA types 32 (c) and 33 (except 33 B3 and C3) and peri-implant fractures with stable implants. Internal fixation was achieved with MIPO using a bridge-plating construct. Bilateral computed tomography (CT) scans of the entire femur were performed postoperatively, and measurements of the uninjured contralateral side defined anatomical alignment. Due to incomplete CT scans or excessively distorted femoral anatomy, seven patients were excluded from analyses. RESULTS Fracture reduction and fixation on the traction table provided excellent postoperative alignment. Only one of the 25 patients had a rotational malalignment of more than 15° (18°). CONCLUSIONS The surgical setup for MIPO of distal femur fractures on a traction table with a dedicated femoral support facilitated reduction and fixation, resulting in a low rate of postoperative malalignment, despite a high rate of peri-implant fractures, and could be recommended for surgical treatment of distal femur fractures.
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Affiliation(s)
- Martin Paulsson
- Department of Orthopaedics, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 41345 Gothenburg, Sweden
| | - Carl Ekholm
- Department of Orthopaedics, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 41345 Gothenburg, Sweden
| | - Roy Tranberg
- Department of Orthopaedics, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 41345 Gothenburg, Sweden
| | - Ola Rolfson
- Department of Orthopaedics, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 41345 Gothenburg, Sweden
| | - Mats Geijer
- Department of Radiology, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 41345 Gothenburg, Sweden
- Department of Clinical Sciences, Lund University, 22185 Lund, Sweden
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Locked Lateral Plating Versus Retrograde Nailing for Distal Femur Fractures: A Multicenter Randomized Trial. J Orthop Trauma 2023; 37:70-76. [PMID: 36026544 DOI: 10.1097/bot.0000000000002482] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/23/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES The 2 main forms of treatment for distal femur fractures are locked lateral plating and retrograde nailing. The goal of this trial was to determine whether there are significant differences in outcomes between these forms of treatment. DESIGN Multicenter randomized controlled trial. SETTING Twenty academic trauma centers. PATIENTS/PARTICIPANTS One hundred sixty patients with distal femur fractures were enrolled. One hundred twenty-six patients were followed 12 months. Patients were randomized to plating in 62 cases and intramedullary nailing in 64 cases. INTERVENTION Lateral locked plating or retrograde intramedullary nailing. MAIN OUTCOME MEASUREMENTS Functional scoring including Short Musculoskeletal Functional Assessment, bother index, EQ Health, and EQ Index. Secondary measures included alignment, operative time, range of motion, union rate, walking ability, ability to manage stairs, and number and type of adverse events. RESULTS Functional testing showed no difference between the groups. Both groups were still significantly affected by their fracture 12 months after injury. There was more coronal plane valgus in the plating group, which approached statistical significance. Range of motion, walking ability, and ability to manage stairs were similar between the groups. Rate and type of adverse events were not statistically different between the groups. CONCLUSIONS Both lateral locked plating and retrograde intramedullary nailing are reasonable surgical options for these fractures. Patients continue to improve over the course of the year after injury but remain impaired 1 year postoperatively. LEVEL OF EVIDENCE Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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8
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Allen BC, Welling BD, Villamaria LJ, Munoz-Maldonado Y. Sagittal mechanical ratio: A novel technique to define sagittal alignment of the femur independent of distal anatomic landmarks. Knee 2023; 40:192-200. [PMID: 36495653 DOI: 10.1016/j.knee.2022.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/12/2022] [Accepted: 11/15/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Radiographic measurements to study sagittal alignment in the setting of knee are frequently difficult to evaluate due the presence of a prosthesis or implant that obscures traditional radiographic landmarks. In this paper we present a novel method of determining sagittal femoral alignment in the presence of obscuring implants. METHODS 98 full-length femoral radiographs were reviewed and divided into two groups. In Group 1, the Distal Mechanical Point (DMP) was used to calculate the Distal Mechanical Ratio (DMR), defined as the ratio of the linear distance from the DMP to the anterior cortical axis divided by the distance from the anterior cortical axis to posterior condylar cortex. In group 2, the sagittal mechanical axis was measured using the true DMP (tDMP) and then separately measured using the DMR to find the calculated DMP (cDMP), and the angular variance between the calculated (cSMA) and true (tSMA) sagittal mechanical axis was calculated, as well as the linear distance between the tDMP and cDMP. Twenty additional patients with knee replacements were then selected and two observers used a cSMA to determine a femoral prosthesis flexion angle (FPFA), with intraobserver correlation calculated. RESULTS The mean DMR was found to be 0.24, with high intraobserver correlation and normal distribution. Validation of the model demonstrated angular variance between tSMA and cSMA less than 1 degree and linear distance between tDMP and cDMP less than 1 mm. Calculation of cCMA in the presence of total knee arthroplasty revealed very strong intraobserver correlation of 0.89. CONCLUSION The Distal Mechanical Ratio reliably predicted the true Sagittal Mechanical Axis within 1 degree and true Distal Mechanical Point within 1 mm, indicating that it may be a valuable tool for evaluating sagittal femoral alignment in cases where anatomic landmarks may be absent or obscured.
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Affiliation(s)
- Bryce C Allen
- Baylor Scott and White Medical Center - Temple, Department of Orthopaedic Surgery, 2401 South 31st Street, Temple, TX 76508, USA.
| | - Benjamin D Welling
- Baylor Scott and White Medical Center - Temple, Department of Orthopaedic Surgery, 2401 South 31st Street, Temple, TX 76508, USA
| | - Luke J Villamaria
- Baylor Scott and White Medical Center - Temple, Department of Orthopaedic Surgery, 2401 South 31st Street, Temple, TX 76508, USA
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Analysis of 101 Mechanical Failures in Distal Femur Fractures Treated with 3 Generations of Precontoured Locking Plates. J Orthop Trauma 2023; 37:8-13. [PMID: 35862769 DOI: 10.1097/bot.0000000000002460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/12/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To evaluate mechanical treatment failure in a large patient cohort sustaining a distal femur fracture treated with a distal femoral locking plate (DFLP). DESIGN This retrospective case-control series evaluated mechanical treatment failures of DFLPs. SETTING The study was conducted at 8 Level I trauma centers from 2010 to 2017. PATIENTS AND PARTICIPANTS One hundred one patients sustaining OTA/AO 33-A and C distal femur fractures were treated with DFLPs that experienced mechanical failure. INTERVENTION The intervention included the treatment of a distal femur fracture with a DFLP, affected by mechanical failure (implant failure by loosening or breakage). MAIN OUTCOME MEASURE The main outcome measures included injury and DFLP details; modes and timing of failure were studied. RESULTS One hundred forty-six nonunions were found overall (13.4%) including 101 mechanical failures (9.3%). Failures occurred in different manners, locations, and times depending on the DFLPs. For example, 33 of 101 stainless steel (SS) plates (33%) failed by bending or breaking in the working length, whereas no Ti plates failed here ( P < 0.05). Eleven of 12 failures with titanium-Less Invasive Stabilization System (92%) occurred by lost shaft fixation, mostly by the loosening of unicortical screws (91%). Sixteen of 44 variable -angled-LCP failures (36%) occurred at the distal plate-screw junction, whereas only 5 of 61 other DFLPs (8%) failed this way ( P < 0.05). Distal failures occurred on average at 23.7 weeks compared with others that occurred at 38.4 weeks ( P < 0.05). Variable -angled-LCP distal screw-plate junction failures occurred earlier (mean 21.4 weeks). CONCLUSION Nonunion and mechanical failure occurred in 14% and 9% of patients, respectively, in this large series of distal femur fracture treated with a DFLP. The mode, location, presence of a prosthesis, and timing of failure varied depending on the characteristics of DFLP. This information should be used to optimize implant usage and design to prolong the period of stable fixation before potential implant failures occur in patients with a prolonged time to union. LEVEL OF EVIDENCE Economic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Axial and Rotational Malreduction (Golf Club Deformity) in Distal Femur Fractures. J Orthop Trauma 2022; 36:515-518. [PMID: 35436242 DOI: 10.1097/bot.0000000000002373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/22/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To describe malreduction of supracondylar distal femur fractures stabilized with lateral femoral locking plates and determine whether a mismatch in axial lateral distal femur anatomy and lateral distal femoral plate design contributes to supracondylar distal femoral fracture malreduction. MATERIALS AND METHODS OTA/AO 33A were simulated in 7 cadaver femurs and fixed with a lateral distal locking femoral plate placed flush to the lateral femoral condyle (group 1). In group 2, the anterior flange of the plate was externally rotated 10 degrees in relation to the lateral condyle. A motion capture system measured translation and rotation of the articular segment as shaft screws were applied, reducing plate to femoral diaphysis. Articular segment movement was compared between groups using paired Student t test, P < 0.05. A large database of 3D scans of 800 femurs was used to define the relationship of the lateral femoral condyle to the lateral cortical surface of the human femur. RESULTS Malreduction was observed with anatomic plate application results from medial translation (17 mm) and external rotation (12.2 degrees) (group 1). Modifying plate geometry to match lateral femur anatomy (group 2) improved medial translation by 46% and external rotation by 80%. An analysis of the shape of the 800 distal femurs showed that the average posterior anterior inclination is 16.5 degrees. CONCLUSIONS Anatomic application of distal femoral plates results in significant malreduction. Modifying the plate design to accommodate 10 degrees slope of lateral distal femur results in partial correction of deformity. Future studies should investigate other means of correcting the malalignment, especially considering the 16.5-degree posterior anterior inclination of the condyle.
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Raja BS, Gowda AK, Baby BK, Chaudhary S, Meena PK. Swashbuckler approach for distal femur fractures: A systematic review. J Clin Orthop Trauma 2022; 24:101705. [PMID: 34900578 PMCID: PMC8636817 DOI: 10.1016/j.jcot.2021.101705] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 11/09/2021] [Accepted: 11/10/2021] [Indexed: 11/18/2022] Open
Abstract
PURPOSE The review aims to reach a common consensus regarding the swashbuckler approach for distal femur fractures by a systematic review of the available literature and to evaluate the complications, union, and outcomes. METHODS Electronic database search engines like Cochrane Library, PubMed, Google Scholar, and Scopus were searched until May 2021. Studies comparing the clinical complications, and functional outcome scores of Swashbuckler approach for distal femur were considered. The quality of the articles were evaluated using Methodological Index for Non-Randomized Studies score. RESULTS Eleven studies were included for the final analysis. An anterior midline incision was used in the majority of studies. Superficial infection was the most common complication seen followed by knee stiffness and deep infections. 66.45% of the patients had excellent/good outcomes. 1.08% had a painful implant and 1.89% had deep infection. CONCLUSION Swashbuckler approach offers itself as a viable option in cases of distal femur fractures, especially in AO type C. The quadriceps sparing approach provides excellent/good outcomes in approximately 66.45% of the patients.
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Affiliation(s)
- Balgovind S. Raja
- Department of Orthopaedics, All India Institute of Medical Sciences, Rishikesh, India
| | - Aditya K.S. Gowda
- Department of Orthopaedics, All India Institute of Medical Sciences, Rishikesh, India
| | - Bibin K. Baby
- Consultant Orthopaedic Surgeon, Indo American Hospital, Vaikom, Kerala, India
| | - Sunny Chaudhary
- Department of Orthopaedics, All India Institute of Medical Sciences, Rishikesh, India
| | - Pradeep Kumar Meena
- Department of Orthopaedics, All India Institute of Medical Sciences, Rishikesh, India
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Surgical Tips and Tricks for Distal Femur Plating. J Am Acad Orthop Surg 2021; 29:770-779. [PMID: 34288900 DOI: 10.5435/jaaos-d-20-01221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 05/03/2021] [Indexed: 02/01/2023] Open
Abstract
Distal femur fractures are challenging fractures to treat, with nonunion rates as high as 22%. Precontoured locking plates have mitigated some earlier causes of failure, while introducing new challenges. The recognition of troublesome injury patterns and appropriate preoperative planning can avoid common pitfalls. Adjunctive techniques, including the use of a radiolucent triangle, an external fixator, unicortical plates, and crossing K-wires, can assist with fracture reduction and maintenance. It is important to understand the common pitfalls involved with distal femur plating and to consider a wide array of techniques to combat these challenges.
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Comparing Intramedullary Nailing Versus Locked Plating in the Treatment of Native Distal Femur Fractures: Is One Superior to the Other? Indian J Orthop 2021; 56:353-354. [PMID: 35140867 PMCID: PMC8789958 DOI: 10.1007/s43465-021-00461-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/15/2021] [Indexed: 02/04/2023]
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External Fixator-Assisted Reduction of Distal Femur Fractures: A Technical Trick. J Orthop Trauma 2021; 35:e177-e181. [PMID: 32694377 DOI: 10.1097/bot.0000000000001901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/07/2020] [Indexed: 02/02/2023]
Abstract
Restoration of anatomical alignment while preserving the soft-tissue envelope around the fracture site remains a challenge during distal femur fracture fixation. Although the lateral distal femoral locking plate allows surgeons to achieve adequate bony stability, their application has been associated with malalignment leading to inferior outcomes. We propose a biologically friendly, percutaneous technique that sequentially reduces and aligns distal femur fractures with an anterior external fixator before definitive fixation with a lateral distal femoral locking plate.
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Extreme Nailing or Less Invasive Plating of Lower Extremity Periarticular Fractures. Orthop Clin North Am 2021; 52:111-121. [PMID: 33752832 DOI: 10.1016/j.ocl.2021.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Periarticular fractures of the lower extremity can be difficult injuries to stabilize effectively. Modern advances in technique and implant design now allow many of these fractures to be fixed with an extreme intramedullary nail. When nailing is not possible, less invasive plating through percutaneous incisions is a reliable option. The decision to perform extreme nailing is multifactorial and is based on the fracture pattern, the condition of the soft tissues, the medical condition of the patient, and the importance of earlier or immediate weightbearing.
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Technical Trick: Dual Plate Fixation of Periprosthetic Distal Femur Fractures. J Orthop Trauma 2021; 35:e148-e152. [PMID: 32569069 DOI: 10.1097/bot.0000000000001869] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/10/2020] [Indexed: 02/02/2023]
Abstract
Treatment of periprosthetic distal femur fractures remains challenging due to assuring adequate distal fixation. Traditional treatment options include lateral locked plating and retrograde nailing, although recently dual implant constructs have been explored with promising results. Allowing immediate weight-bearing in this patient population has benefits with regards to rehabilitation and outcome. Recent literature has focused on nail-plate constructs, however plate-plate constructs are preferred at our institution as they do not require arthroplasty component compatibility, facilitate the coronal plane reduction, and allow for immediate weight-bearing.
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Distal Femur Replacement Versus Surgical Fixation for the Treatment of Geriatric Distal Femur Fractures: A Systematic Review. J Orthop Trauma 2021; 35:2-9. [PMID: 32569072 DOI: 10.1097/bot.0000000000001867] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/10/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVES The management of geriatric distal femur fractures is controversial, and both primary distal femur replacement (DFR) and surgical fixation (SF) are viable treatment options. The purpose of this study was to compare patient outcomes after these treatment strategies. DATA SOURCES PubMed, Embase, and Cochrane databases were searched for English language articles up to April 24, 2020, identifying 2129 papers. STUDY SELECTION Studies evaluating complications in elderly patients treated for distal femur fractures with either immediate DFR or SF were included. Studies with mean patient age <55 years, nontraumatic indications for DFR, or SF with nonlocking plates were excluded. DATA EXTRACTION Two studies provided Level II or III evidence, whereas the remaining 28 studies provided Level IV evidence. Studies were formally evaluated for methodological quality using established criteria. Treatment failure between groups was compared using an incidence rate ratio. DATA SYNTHESIS Treatment failure was defined for both SF and arthroplasty as complications requiring a major reoperation for reasons such as mechanical failure, nonunion, deep infection, aseptic loosening, or extensor mechanism disruption. There were no significant differences in complication rates or knee range of motion between SF and DFR. CONCLUSIONS SF and DFR for the treatment of geriatric distal femur fractures demonstrate similar overall complication rates. Given the available evidence, no strong conclusions on the comparative effectiveness between the 2 treatments can be definitively made. More rigorous prospective research comparing SF vs. DFR to treat acute geriatric distal femur fractures is warranted. LEVEL OF EVIDENCE Therapeutic Level IV. See instructions for authors for a complete description of levels of evidence.
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Surgical outcomes of simple distal femur fractures in elderly patients treated with the minimally invasive plate osteosynthesis technique: can percutaneous cerclage wiring reduce the fracture healing time? Arch Orthop Trauma Surg 2020; 140:1403-1412. [PMID: 32108255 DOI: 10.1007/s00402-020-03385-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Achieving adequate reduction is difficult when performing minimally invasive plate osteosynthesis (MIPO) in elderly patients with simple distal femur fracture. This study aimed to evaluate the elderly patients who had undergone percutaneous wiring-assisted reduction with MIPO for simple distal femur fractures to determine the effect of this technique on reduction quality and fracture union. MATERIALS AND METHODS Between January 2009 and September 2017, 56 patients (56 femurs) with displaced simple distal femur fractures treated with MIPO at three trauma centers were finally enrolled. The MIPO technique with percutaneous cerclage wire reduction was performed in 25 patients (Group A). Among them, 12 patients had a simple spiral metaphyseal fracture (Group A*). In comparison, MIPO without percutaneous cerclage wire reduction was performed in 31 patients (Group B). Among them, seven patients had a simple spiral metaphyseal fracture (Group B*). Medical records containing surgical records were retrospectively reviewed to investigate demographic data, comorbidities, complications, operative time, and fluoroscopic time. Radiographs were evaluated for assessing the quality of the reduction and fracture union. RESULTS The mean fracture union time of Group A* was 21.7 weeks, which was significantly shorter than that of Group B* (28.6 weeks). The mean coronal and sagittal angulation in Group A* was 0.6° and 0.7°, respectively, which were significantly lesser than those in Group B* (2.4° and 3.2°, respectively). Mean translation in Group A* was 1.43 mm, which was significantly shorter than that in Group B* (3.81 mm). Nonunion occurred in two patients in Group B. CONCLUSION Surgical treatment of simple spiral distal femur fractures with percutaneous cerclage wiring-assisted reduction and the MIPO technique in elderly patients resulted in better reduction and faster union time. Therefore, this technique could be a good solution if used in accordance with the indication.
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Meshay IM, Martin JR, Auran RL, Jones CB. Proximal Femur Peri-Implant Fracture After Lateral Femur Locking Plate: A Report of 2 Cases. JBJS Case Connect 2020; 10:e1900622-6. [PMID: 32668138 DOI: 10.2106/jbjs.cc.19.00622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
CASE This case report discusses 2 cases of proximal femur peri-implant fractures after the use of lateral locking plates for distal femur periprosthetic fractures. CONCLUSION The use of locking plate technology for fixation of distal femur periprosthetic fractures is a common treatment modality. Although much has been reported regarding healing and complication rates of distal femoral periprosthetic fractures, little has been reported about peri-implant fractures subsequent to treatment using locking plates. We propose the importance of developing a method of fixation to protect the entire femur in osteoporotic patients sustaining distal femur periprosthetic fractures at the index surgery to avoid this complication.
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Affiliation(s)
- Ian M Meshay
- 1University of Arizona College of Medicine-Phoenix, Phoenix, Arizona 2Department of Orthopaedic Surgery, University of Arizona College of Medicine-Phoenix, Phoenix, Arizona 3The CORE Institute, Phoenix, Arizona
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Abstract
Effective fracture surgery requires contouring orthopaedic implants in multiple planes. The amount of force required for contouring is dependent on the amount and type of material contained within the plane to be altered. The type of contouring used depends on the desired plate function; for example, buttress mode often requires some degree of undercontouring, whereas compression plating may require prebending. Other reasons to contour a plate include matching patient anatomy either to maximize fixation options or to reduce implant prominence. Precontoured plates can be convenient and help to facilitate soft-tissue friendly techniques but have the potential to introduce malreduction if the plate position and fit are not carefully monitored.
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Analysis of the fit of modern pre-contoured distal femur plates: Expect an imperfect contour. Injury 2020; 51:719-722. [PMID: 31987606 DOI: 10.1016/j.injury.2020.01.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/23/2019] [Accepted: 01/05/2020] [Indexed: 02/02/2023]
Abstract
The purpose of this study was to determine if the contour of current distal femur plates can reliably be used as a reduction tool and to determine if the presence of a total knee arthroplasty (TKA) influences fit. Thirty-two patients were retrospectively reviewed. Radiographs of 19 patients with normal knees and 21 patients who had undergone TKA were evaluated. Using TraumaCad templating software, the contours of 4 different modern distal femur plates (Depuy Synthes, Stryker, Zimmer Biomet, and Smith & Nephew) were analyzed using a novel measurement technique to evaluate plate fit. To mimic non-locking screws in the shaft, the template was placed on the shaft and the plate to bone (PTB) and condyle to plate (CTP) distances were recorded. The PTB distance measured how closely the plate matched the contour of the metaphyseal flare, while the CTP value represented the distance from the plate to the distal articular surface. Larger PTB and CTP distances represent a higher mismatch between the patient's anatomy and the contour of the plate. There was significant variability in plate fit in all patients. None of the plates fit the patient's anatomy well, with PTB values averaging from 5.5 mm to 9.2 mm. There was no significant difference between normal radiographs and TKA radiographs, suggesting that the presence of a TKA may not contribute to plate fit. The results of this study show that current plate designs may not match the patient's native anatomy prior to fracture. Therefore, caution should be utilized when using non-locking screws in the shaft and using the pre-contoured nature of the plate as a template for reduction. The authors advocate for careful preoperative planning and using contralateral radiographs for templating purposes to prevent malreduction and to assist in device selection for the best device fit per patient.
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Abstract
Distal femur fractures occur in a periarticular fracture pattern and disproportionately afflict an aging population. Although the goals of treatment have not changed, the emergence of new surgical techniques and devices has recently been developed and refined to treat this challenging fracture pattern. Treatment options include open reduction and internal fixation with periarticular locking plates, intramedullary nails, or distal femur replacement. Despite rapid adoption, these modern solutions display a concerning complication rate, specifically from nonunion and malunion. The indications for each of these treatment strategies are not well defined and are the subject of current debate. As with the use of any orthopaedic implant, the knowledge of the strengths and weaknesses of each construct is paramount to successful treatment of these fractures. Recently, as the understanding of the biomechanics of distal femur fracture healing has improved, the literature has demonstrated clinical and theoretical improvements in the outcomes after distal femur fracture repair.
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Wang SH, Wu CC, Li WT, Shen HC, Lin LC, Pan RY. Outcomes of distal femoral fractures treated with minimally invasive plate osteosynthesis versus open reduction internal fixation with combined locking plate and interfragmentary screws. Int J Surg 2019; 65:107-112. [PMID: 30951872 DOI: 10.1016/j.ijsu.2019.03.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/21/2019] [Accepted: 03/26/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE Fractures of the distal femur remain challenging to treat, and numerous fixation methods are designed to promote stability and fracture healing. Locking plate constructs have recently become the mainstream fixation method, but debate exists on whether to use locking plates alone or to augment them with interfragmentary screws. This article compares outcomes of distal femur fractures treated with a single locking plate alone versus those treated with a locking plate and interfragmentary screws. METHODS We retrospectively reviewed 57 patients treated for distal femur fractures from 2010 to 2013. Patients were divided into two groups: Those treated with a locking plate alone utilizing the minimally invasive plate osteosynthesis (MIPO) technique and those treated with combination of a locking plate and interfragmentary screws using an open technique. Postoperative outcomes were obtained via a manual chart review. Fracture healing and callus indices were evaluated from radiographs. RESULTS 9 patients required revision surgery in the locking plate alone group (6 for persistent nonunion and 3 for varus deformity). Only two patients in the combination group required revisions (both for nonunion). Average time to full weight bearing was 19.54 weeks in the locking plate group versus 14.57 weeks in the combination group (p = 0.004). At the time of full weight bearing, frontal (1.15 versus 1.11, p = 0.004) and sagittal (1.22 versus 1.15, P = 0.008) callus indices were both significantly greater in the locking plate group. CONCLUSIONS In this study, the combination of a locking plate and interfragmentary screws achieved suitable stability and a faster time to full weight bearing than using a locking plate alone. Surgeons should consider combining a locking plate with interfragmentary screws as an effective method for fixation of distal femur fractures, particularly in cases when plate fixation alone fails to provide adequate fracture stability.
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Affiliation(s)
- Sheng-Hao Wang
- Department of Orthopaedics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC; Graduate Institute of Medical Science, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Chia-Chun Wu
- Department of Orthopaedics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC
| | - William T Li
- Department of Orthopedic Surgery, Rothman Orthopedic Institute at Thomas Jefferson University, 925 Chestnut Street, Philadelphia, PA 19107, USA
| | - Hsain-Chung Shen
- Department of Orthopaedics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Leou-Chyr Lin
- Department of Orthopaedics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Ru-Yu Pan
- Department of Orthopaedics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC; Graduate Institute of Medical Science, National Defense Medical Center, Taipei, Taiwan, ROC.
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Abstract
Supracondylar femur fractures represent a challenging and common injury treated by many orthopedic surgeons. An array of surgical fixation options has been developed to help the treating surgeon restore normal anatomic alignment of these fractures, and lateral precontoured condylar femoral locking plates have become a common implant for most surgeons in treating these fractures. Although these precontoured plates provide significant benefit to the treating physician in regards to gaining appropriate bony fixation, common technical errors that may lead to malalignment when using these plates have been described. Avoiding these errors will help improve patient outcomes. Here, we describe a novel, inexpensive, and universally available technique that may aid the treating surgeon in restoring coronal alignment when treating distal femur fractures.
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Abstract
Fractures of the distal femur with intercondylar extension and comminution are challenging cases and demand a thorough preoperative evaluation and execution of proper surgical technique. Identification of the intra-articular fractures, including coronal fractures of the lateral condyle, is important in planning surgery and emphasizes the need for computerized tomography scans. Recent advances with anatomic, locking plates have made minimally invasive surgery easier, but joint reduction needs to be performed meticulously in an open manner, and restoration of the mechanical alignment through plate fixation is essential for a good clinical outcome. Stable fixation that allows for early range of motion and mobilization are essential for the patient's recovery. This video demonstrates open reduction and internal fixation of a high-energy supracondylar/intercondylar distal femur fracture and emphasizes minimally invasive, biologically friendly techniques.
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Abstract
In this case, a lateral locking plate is used for fixation of a periprosthetic distal femur fracture in a 68-year-old woman. Modern implants with locking screw options and soft-tissue-sparing surgical techniques have improved the care of periprosthetic distal femur fractures. Although much debate about the working length and technical variables of plating exists, it is generally accepted that longer (>10 hole) plates with adequate working length and careful soft-tissue handling are preferred. This case outlines a stepwise approach to distal femur fractures to achieve appropriate plate position and restoration of alignment while avoiding excessive surgical exposure or soft-tissue dissection. In this case, retrograde intramedullary nail was not considered because of the distal nature of the fracture, but this option may be favorable for cruciate-retaining total knee arthroplasty or open box designs that will accommodate nail insertion. Although weight bearing was protected for 6 weeks, plate fixation allows early rehabilitation and knee range of motion. This patient went on to successful union and excellent clinical outcome with return to baseline function.
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Bergin PF, Miles DT, Mathis TP, Graves ML, Spitler CA, Replogle WH, Jones LC, Stronach B. Intraoperative Evaluation of the Anatomic Lateral Distal Femoral Angle and Its Variation due to Positioning. J Orthop Trauma 2018; 32:414-418. [PMID: 30028794 DOI: 10.1097/bot.0000000000001221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND/PURPOSE Preoperative evaluation of the contralateral anatomic lateral distal femoral angle (aLDFA) at our institution is used to judge coronal plane alignment. In our study, we investigated 4 different techniques for obtaining an anteroposterior intraoperative fluoroscopic image of the distal femur to determine which technique provides (1) the greatest interobserver reliability; (2) the lowest variability from the previously published population mean; and (3) the lowest side-to-side variability. METHODS Inclusion criteria included lower extremity injuries needing fixation that required intraoperative fluoroscopy with an intact femur and an intact extensor mechanism (N = 100). Fluoroscopic images were obtained of the distal femur in 4 positions differentiated by the position of the limb and the orientation of the C-arm beam to the femoral shaft. RESULTS All measurement techniques resulted in mean measurements within one degree of 81 degrees. Variance between measurements was small among patients with all views, but images that involved a true anteroposterior with the beam perpendicular to the femur had the lowest rate of measurements that were <78 or >84 degrees. CONCLUSION Side-to-side differences in patients were <2 degrees on average with every image used. With the best-performing images, 20% of patients had an aLDFA > 3 degrees different from the population mean of 81 degrees and 3% of patients were >5 degrees different. Although restoring aLDFA to 81 degrees will be within 3 degrees of the contralateral side the vast majority of the time, matching the aLDFA to the injured side will be the most accurate reconstruction.
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Affiliation(s)
- Patrick F Bergin
- Department of Orthopedic Surgery and Rehabilitation, University of Mississippi Medical Center, Jackson, MS
| | - Daniel T Miles
- Department of Orthopedic Surgery and Rehabilitation, University of Mississippi Medical Center, Jackson, MS
| | | | - Matthew L Graves
- Department of Orthopedic Surgery and Rehabilitation, University of Mississippi Medical Center, Jackson, MS
| | - Clay A Spitler
- Department of Orthopedic Surgery and Rehabilitation, University of Mississippi Medical Center, Jackson, MS
| | - William H Replogle
- Department of Family Medicine, University of Mississippi Medical Center, Jackson, MS
| | - LaRita C Jones
- Department of Orthopedic Surgery and Rehabilitation, University of Mississippi Medical Center, Jackson, MS
| | - Benjamin Stronach
- Department of Orthopedic Surgery and Rehabilitation, University of Mississippi Medical Center, Jackson, MS
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Fixation of periprosthetic or osteoporotic distal femoral fractures with locking plates: a pilot randomised controlled trial. INTERNATIONAL ORTHOPAEDICS 2018; 43:1193-1204. [PMID: 30069590 PMCID: PMC6470115 DOI: 10.1007/s00264-018-4061-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 07/12/2018] [Indexed: 12/13/2022]
Abstract
Introduction We hypothesised that the use of a polyaxial locking plate design offers the same clinical benefits as a monoaxial locking plate system following distal femoral osteoporotic/periprosthetic fracture fixation. Method A multicentre prospective randomised pilot trial was conducted. Inclusion criteria were patients over 60 years with a displaced osteoporotic or periprosthetic distal femoral fracture. Details documented included time to union, complications, reinterventions and functional outcomes according to the Oxford knee score and EuroQol EQ-5D. Analysis of factors influencing an early fracture healing response was performed between those with clear features of radiological callus formation at three months. Statistical analysis was performed using a logistic regression model with multiple covariates assessed for each plate system (1:1 ratio) over a follow-up period of one year. Results Forty patients (34 females) with a mean age of 77 (60–99) were recruited. Four patients deceased within the first six months. Twenty-five patients united by the six month follow-up. Six more patients progressed to union between six and nine months. Five patients developed non-union (two patients had implant failure; one in each group) and all underwent revision surgery. Malunion was evident in two cases, one with 15° of valgus (monoaxial plate), and one with 12° of recurvatum (polyaxial plate). Between the two plate systems, statistical analysis revealed no significant differences in most of the recorded parameters. Radiological features of early bone healing were present when the surgical approach was smaller (p = 0.015), and when a greater working length of the bridging plate was present (p = 0.016). Conclusion Both plate systems demonstrated good union rates and limited implant related complications. Good reduction, mechanically sound construct and respect of the local fracture biology was more important than the particular plate design characteristics. Electronic supplementary material The online version of this article (10.1007/s00264-018-4061-1) contains supplementary material, which is available to authorized users.
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Abstract
The aim for this review is to present general considerations in relation to malalignment after osteosynthesis with plate fixation and its consequences after fractures in adults in each of the following anatomical locations: humerus, forearm, femur, tibia. Recommendations for accepted malalignment in humerus diaphyseal fracture is varus <20 degrees, valgus <15 degrees, sagittal deformity <5 degrees and rotation <30 degrees. Recommendations when treating fractures of the forearm is anatomical reduction. Varus of ulna leads to loss of pronation. Valgus of ulna leads to loss of both pronation and supination. Recommendations for acceptable malalignment in femoral fractures is rotational deformity <15 degrees, increasing varus deformity in intertrochanteric fractures increases load on implant. Cortical-step-sign, profile of lesser trochanter, evaluation of ipsilateral neck anteversion are intraoperative methods to avoid rotational malalignment. Recommendations for accepted malalignment in the tibia is shortening <10mm, varus/valgus <5 degrees, sagittal deformity <10 degrees. Fixation of fibula leads to less rotational and valgus malalignment, but not enough to affect union rate of tibia, complications rate or functional score at 12 months. To avoid malalignment in plating, pre-contoured anatomical plates are available from most manufactures. Being aware that most such plates fit a 50-percentile Caucasian population is important in pre-surgical planning. Evaluation of the contralateral bone and the characteristics of the plate may help in planning additional bending of pre-shaped plates and bending tools should always be available when applying a plate, even a so-called anatomical one.
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Percutaneous Application of a Medial Plate for Dual Plate Stabilization of Supracondylar Femur Fractures. J Orthop Trauma 2018; 32:e31-e35. [PMID: 29257782 DOI: 10.1097/bot.0000000000001019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Supracondylar femur fractures with segmental defects can be difficult fractures to treat. When associated with open wounds, these injuries can be associated with numerous complications including nonunion, malunion, infection, and arthrofibrosis. In this article, we review our algorithm for treating these fractures and highlight critical aspects of the process which differs from previous techniques described. We feel that this technique has specific benefits that mitigate infection risk and minimize additional soft-tissue insult without compromising stability. Our results demonstrate good postoperative knee range of motion, a high union rate, with low complication rates.
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Reliable Method for Avoiding Malrotation Deformity After Intramedullary Nailing of Comminuted Femur Fractures: Clinical Validation of a Previously Described Technique. J Orthop Trauma 2017; 31:e121-e126. [PMID: 28328732 DOI: 10.1097/bot.0000000000000767] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To evaluate a previously described technique using the inherent anteversion of intramedullary nail (IMN) to avoid malrotation in comminuted femur fractures and describe the use of magnetic resonance imaging (MRI) as an alternative method for assessing postoperative femoral version. DESIGN Prospective consecutive cohort study. SETTING Level I trauma center. PATIENT/PARTICIPANTS Twenty-five consecutive patients with comminuted femur fractures (Winquist III/IV, OTA/AO 32-B/32-C) treated by a single surgeon with IMN between September 1, 2011, and February 28, 2015. INTERVENTION IMN on a fracture table with intraoperative femoral version set by the inherent version of the implant. All patients received a postoperative computed tomography (CT) or MRI to assess femoral version. MAIN OUTCOME MEASUREMENTS Mean difference in postoperative femoral anteversion (DFA) between injured limb and uninjured limb as measured by CT or MRI. Mean difference in postoperative femoral version of the injured femur from the inherent version of the implant (12 degrees) was measured with CT or MRI. RESULTS The mean postoperative DFA was 9.1 ± 5.6 degrees. Postoperative DFA greater than 15 degrees was found in 2 (8.0%) patients. Mean difference in postoperative version of the injured femur from the inherent 12 degrees of the implant was 7.1 ± 5.4 degrees. Patients tolerated MRI studies well. CONCLUSIONS Our previously described technique using the inherent anteversion of an IMN is effective and leads to a very low rate of malrotation, even in highly comminuted fractures. The technique is particularly useful in treating bilateral femur fractures. MRI can be used safely and effectively to assess anteversion after fixation of femur fractures. LEVEL OF EVIDENCE Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Kim JW, Oh CW, Oh JK, Park IH, Kyung HS, Park KH, Yoon SD, Kim SM. Malalignment after minimally invasive plate osteosynthesis in distal femoral fractures. Injury 2017; 48:751-757. [PMID: 28093251 DOI: 10.1016/j.injury.2017.01.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 12/28/2016] [Accepted: 01/07/2017] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Although minimally invasive plate osteosynthesis (MIPO) is a preferred operative treatment for fractures of the distal femur, malalignment is a significant concern because of indirect reduction of the fracture. The purpose of this study, therefore, was to evaluate radiologic alignment after MIPO for distal femoral fractures. PATIENTS AND METHODS Of the 138 patients with fracture of the distal femur who underwent MIPO, we enrolled 51 patients in whom bilateral rotational alignment could be assessed by postoperative computed tomography (CT). The patients included 32 men and 19 women, with a mean age of 54.3 years. Thirteen patients had femoral shaft fractures (according to the AO/OTA classification: 32-A, n=2; 32-B, n=6; 32-C, n=5), whereas 38 patients had distal femoral fractures (33-A, n=7; 33-C, n=31). Coronal and sagittal alignments were assessed using simple radiography, whereas rotational alignment was assessed using CT. According to the difference between the affected and unaffected sides, we divided the patients into satisfactory and unsatisfactory groups (reference point of 8°, using Handolin's classification). Thereafter, we determined which factors can lead to malalignment, including fracture location (distal femoral shaft fracture or metaphyseal fracture), fracture pattern (simple fracture, n=15; complex fractures, n=36 patients), coronal and sagittal alignments, and combined ipsilateral long bone fractures. RESULTS Coronal and sagittal alignment were satisfactory in 96.2% (average, 2.8°) and 98% (average, 2.2°), respectively, whereas the rotational alignment was satisfactory in 56.9% of patients. Leg length discrepancy was satisfactory in 92.3% of the patients (average, 10.9mm). Concerning rotational malalignment, an unsatisfactory result was obtained in 48.6% of subjects with complex fractures and 26.7% of subjects with simple fractures (p=0.114). No significant correlation was noted between the angular deformity in the coronal and sagittal planes and the degree of rotational alignment (p=0.607 and 0.774, respectively). CONCLUSIONS Regardless of the fracture pattern, rotational malalignment may occur at an extremely high rate after MIPO for fractures of the distal femur.
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Affiliation(s)
- Joon-Woo Kim
- Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Chang-Wug Oh
- Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu, Republic of Korea.
| | - Jong-Keon Oh
- Department of Orthopaedic Surgery, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Il-Hyung Park
- Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Hee-Soo Kyung
- Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Kyeong-Hyeon Park
- Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Seong-Dae Yoon
- Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Seong-Min Kim
- Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu, Republic of Korea
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Piétu G, Ehlinger M. Minimally invasive internal fixation of distal femur fractures. Orthop Traumatol Surg Res 2017; 103:S161-S169. [PMID: 27867137 DOI: 10.1016/j.otsr.2016.06.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 06/07/2016] [Accepted: 06/08/2016] [Indexed: 02/07/2023]
Abstract
Fractures of the distal femur remain a daunting challenge. Since 1970, operative treatment has been recommended. Unfortunately, it is fraught with complications, and techniques have been developed to limit incidence of non-union, infection and stiffness. A soft-tissue friendly approach is the key point, with minimally invasive surgery as the ultimate goal: its biological and anatomical advantages have been demonstrated, but clinical studies have been less convincing, being based on historical series. At present, retrograde nailing and minimally invasive percutaneous plate osteosynthesis (ideally by locking plate) are the two main techniques. Unfortunately, reports tend to compare implants rather than operative techniques, hindering solid conclusions. Lastly, the delineation of "distal femur fracture" is quite variable, sometimes situated well above the AO epiphyseal square. Meta-analyses find almost no difference between the two implants in minimally invasive procedures. The main advantage of the plate is its versatility, whereas nailing can be impossible in case of certain hip or knee prostheses, compound articular fracture or medullary canal obstruction by fixation material (nail, stem, screw, etc.). The role of arthroscopy is limited. Only a few case reports describe its use in reduction of epiphyseal fracture. In the last analysis, the surgeon's experience is more relevant to outcome than any particular implant.
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Affiliation(s)
- G Piétu
- Clinique chirurgicale orthopédique et traumatologique, CHU de Nantes, 1, place Alexis-Ricordeau, 44093 Nantes cedex 1, France.
| | - M Ehlinger
- Service de chirurgie orthopédique et traumatologique, hôpital de Hautepierre, CHU de Strasbourg, 1, avenue Molière, 67089 Strasbourg cedex 1, France
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Pitfalls in Distal Femur Fracture Fixation and a Literature Review. JOURNAL OF ORTHOPEDIC AND SPINE TRAUMA 2016. [DOI: 10.5812/jost.12966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abstract
OBJECTIVES To evaluate outcomes and complications using cemented modular distal femoral replacement in elderly patients with distal femoral fractures. DESIGN Retrospective chart review, case series. SETTING A Level 1 and Level 2 trauma center, both tertiary referral hospitals. PATIENTS/PARTICIPANTS Eighteen patients older than 60 years (average age 77 years) who had cemented distal femoral replacement for distal femoral fractures (comminuted, intraarticular, osteoporotic, arthritic) between 2005 and 2013. Patients with previous knee surgery were excluded. INTERVENTION Cemented modular distal femoral replacement. MAIN OUTCOME MEASURES Implant status, complications, Knee Society Score, Musculoskeletal Tumor Society score, and Western Ontario and McMaster Osteoarthritis Index. RESULTS All patients were extremely or very satisfied with their outcomes. For patients with functional outcome data, Knee Society Score averaged 85.7 with a functional score of 35, Musculoskeletal Tumor Society score averaged 19.2, and Western Ontario and McMaster Osteoarthritis Index score averaged 23.1 at an average follow-up of 2.3 years. Range of motion was 1-99 degrees. Implant-related complications occurred in 2 patients (11%); one required revision to total femoral replacement because of periprosthetic fracture and the other had a deep infection that required exchange of the components. No patient had aseptic loosening or patellar maltracking. There were no perioperative deaths or late amputations. CONCLUSIONS Cemented modular distal femoral replacement is a viable treatment option in elderly patients that permits immediate full weight-bearing, with most patients returning to preoperative functional status. LEVEL OF EVIDENCE Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Retrograde dynamic locked intramedullary nailing for aseptic supracondylar femoral nonunion after dynamic condylar screw treatment. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2016; 26:625-31. [PMID: 27314842 DOI: 10.1007/s00590-016-1800-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 05/19/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Supracondylar femoral nonunions after dynamic condylar screw (DCS) treatment are uncommon, and few studies have addressed an optimal treatment technique for this disorder. Re-insertion of a new plate may not be secure because of bony defects in the distal fragment, created by the lag screw of the DCS. MATERIALS AND METHODS Forty-two consecutive adult patients with 42 supracondylar femoral nonunions were treated with removal of the DCS, re-alignment of the knee axis, and insertion of a retrograde dynamic traditional femoral locked nail. When necessary, a humeral plate was augmented to reinforce rotational stability. RESULTS A final group of 36 patients with 36 nonunions were followed for an average of 2.8 years (range 1.1-6.2 years). All nonunions healed with a union rate of 100 %, and the average time to union was 4.2 months (range 2.5-5.5 months). Complications included two malunions. There were no instances of nonunion or deep infection. Satisfactory knee function among 36 patients improved from 8.2 % preoperatively to 86.1 % at the last follow-up (p < 0.001). All 36 patients could walk without aids. CONCLUSION The described technique may be an excellent alternative treatment for an aseptic supracondylar femoral nonunion after DCS treatment. The technique is not difficult, and the union rate and satisfactory rate are high.
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Abstract
OBJECTIVES To document the high failure rate of a specific implant: the Synthes Variable Angle (VA) Locking Distal Femur Plate. DESIGN Retrospective. SETTING Urban University Level I Trauma Center. PATIENT/PARTICIPANTS All distal femur fractures (OTA/AO 33-A, B, C) treated from March 2011 through August 2013 were reviewed from our institutional orthopaedic trauma registry. Inclusion criteria were fractures treated with a precontoured distal femoral locking plate and age between 18 and 84. Exclusion criteria were fractures treated with intramedullary nails, arthroplasty, non-precontoured plates, dual plating, or screw fixation alone. The population was divided into 3 groups: less invasive stabilization system (LISS) group (n = 21), treated with LISS plates (Synthes, Paoli, PA); locking condylar plates (LCPs) group (n = 10), treated with LCPs (Synthes, Paoli, PA); and VA group (n = 36), treated with VA distal femoral LCPs (Synthes, Paoli, PA). Average age was 54.6 ± 17.5 years. INTERVENTION Open reduction internal fixation with one of the above implants was performed. MAIN OUTCOME MEASURES The patients were followed radiographically for early mechanical implant failure defined as loosening of locking screws, loss of fixation, plate bending, or implant failure. RESULTS There were no statistically significant differences between groups for age, gender, open fracture, mechanism of injury, or medial comminution. There were 3 failures (14.3%) in group LISS, no failures (0%) in group LCP, and 8 failures (22.2%) in group VA. All 3 failures in group LISS were in A-type fractures (2 periprosthetic) and all failures in group VA were in C-type fractures. When all fractures for all 3 groups were compared for failure rate, there was no statistically significant difference (P = 0.23). However, when only 33-C fractures were compared, there was significantly greater failure rate in the VA group (P = 0.03). The mean time to failure in group VA was 147 days (range 24-401 days) and was significantly earlier (P = 0.034) when compared with group LISS (mean 356 days; range 251-433 days). CONCLUSIONS Early mechanical failure with the VA distal femoral locking plate is higher than traditional locking plates (LCP and LISS) for OTA/AO 33-C fractures. We caution practicing surgeons against the use of this plate for metaphyseal fragmented distal femur fractures. LEVEL OF EVIDENCE Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Lill M, Attal R, Rudisch A, Wick MC, Blauth M, Lutz M. Does MIPO of fractures of the distal femur result in more rotational malalignment than ORIF? A retrospective study. Eur J Trauma Emerg Surg 2015; 42:733-740. [PMID: 26555728 DOI: 10.1007/s00068-015-0595-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 10/24/2015] [Indexed: 11/25/2022]
Abstract
PURPOSE Intraoperative control of rotational malalignment poses a big challenge for surgeons when using modern MIPO (minimally invasive plate osteosynthesis) techniques. We hypothesized that distal femoral fractures treated with MIPO technique are more often fixed in malrotation than those treated with open reduction internal fixation (ORIF). METHODS In this retrospective study, we identified 20 patients who met the inclusion criteria and agreed to take part in the study. In ten patients MIPO was applied, in the other ten ORIF was used. Mean age was 44.8 (19-71 years). Functional status was assessed using clinical scores (Harris Hip Score, WOMAC Hip, KS Score, WOMAC Knee, Kujala Score). Rotational alignment was assessed with magnetic resonance imaging and compared to the opposite leg. RESULTS We discovered a significant difference in the mean rotational difference between the MIPO group (14.3°) and the ORIF group (5.2°). Functionally, patients in the ORIF group outperformed patients in the MIPO group in all clinical scoring systems although no one proved to be statistically significant. MIPO technique was associated with significantly more rotational malalignment compared to ORIF in distal femur fracture fixation. However, implant failure and nonunion was more common in the ORIF group, with a revision rate of 3 versus 1 in the ORIF group. Clinical scoring did not significantly different between both groups. CONCLUSION Taking into account the undisputable advantages of minimally invasive surgery, improved teaching of methods to avoid malrotation as well as regular postoperative investigations to detect any malrotation should be advocated.
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Affiliation(s)
- M Lill
- Department for Trauma Surgery and Sports Medicine, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria.
- Trauma Hospital Salzburg, Dr. Franz-Rehrl-Platz 5, 5020, Salzburg, Austria.
| | - R Attal
- Department for Trauma Surgery and Sports Medicine, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria
| | - A Rudisch
- Department of Radiology, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria
| | - M C Wick
- Department of Radiology, Karolinska University Hospital, 17176, Stockholm, Sweden
| | - M Blauth
- Department for Trauma Surgery and Sports Medicine, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria
| | - M Lutz
- Department for Trauma Surgery and Sports Medicine, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria
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Swashbuckler approach and surgical technique in severely comminuted fractures of the distal femur. CURRENT ORTHOPAEDIC PRACTICE 2015. [DOI: 10.1097/bco.0000000000000226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
Fractures of the distal femur, even those with articular extension, are well suited to surgical fixation with modern precontoured anatomic plates and nails. Numerous adjuvant techniques are available to the treating surgeon to obtain and maintain reduction while preserving fracture biology. Yet despite their proven track record and benefits over older implants, technical errors are common and must be overcome with proper preoperative planning and intraoperative attention to detail. This review summarizes the current state of the art regarding distal femur fractures, with an emphasis on relevant modern plate and nail surgical techniques, tempered by our current understanding of implant biomechanics, fracture healing, and long-term outcomes.
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Comminuted distal femur closed fractures: a new application of the Ilizarov concept of compression-distraction. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2014; 25:555-62. [PMID: 25427781 DOI: 10.1007/s00590-014-1561-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 10/29/2014] [Indexed: 10/24/2022]
Abstract
INTRODUCTION The treatment of intra-articular distal femur fractures with severe metaphyseal comminution is challenging. It is important to choose a technique that provides secure fixation, minimum tissue handling, and early ambulation. The aim of this work was to evaluate the outcomes of application of Ilizarov concept as an early definitive treatment of comminuted distal femur closed fractures. PATIENTS AND METHODS A total of 17 male patients (mean age 28.53±6.33 years) presented with comminuted distal femur fractures (with 10 type C2 and 7 type C3-2 fractures according to AO/ASIF system) were included in this prospective study. Initial fixation of the articular fragments was done by inter-fragmentary screws, percutaneously through a limited open approach, and stabilization was completed by Ilizarov fixator. The procedure included acute shortening, through the comminution, followed by gradual re-distraction to compensate the created shortening. Radiological and functional results were assessed according to ASAMI evaluation system. RESULTS The mean amount of intra-operative shortening was 3.68±0.53 cm. The mean external fixation index was 37.24±2.53 days/cm. The mean follow-up period was 18.18±1.91 months. All fractures united primarily in an average 137.65±4.12 days, with no evident angular deformity or limb-length discrepancy. None of the cases required a second major procedure or bone graft. The functional results were excellent in three cases, good in 12, and fair in two patients. CONCLUSIONS The Ilizarov concept of acute compression-distraction is a valuable alternative for the treatment of distal femur fractures with severe metaphyseal comminution.
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Integrating various common indexes of bony alignment in femoral supracondyle. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2013; 24:1271-7. [PMID: 24292490 DOI: 10.1007/s00590-013-1373-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 11/16/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Indexes, which can optimally represent the bony alignment around the knee, are still controversial. Three common indexes, mechanical axis (MA), anatomic axis (AA), and anatomic lateral distal femoral angle (aLDFA), were integrated to simplify patient follow-up in the femoral supracondylar region. MATERIALS AND METHODS Eighty consecutive adult patients (40 men, 40 women; age range 19-40 years) were studied using a full-length standing scanogram. Thirteen indexes, including MA, AA, and aLDFA, were measured and integrated. The relationships among these indexes were analyzed. RESULTS The MA of the lower extremity passed with an average of 6.6 mm (9.2% of the tibial articular surface width) medial to the knee center. The supracondylar axis (SA) was an average of 2.0° more valgus than the AA in the femoral supracondyle. An average 1.1° deviation was noted in the AA, as measured by the femoral shaft axis or a line connecting the piriformis fossa to the knee center. CONCLUSION The femoral MA may be more favorable than the MA of the lower extremity in order to represent an ideal weight-bearing line. The AA and aLDFA may be measurable via the SA in the anteroposterior view of the plain knee radiograph. Thus, patient follow-up becomes much more convenient.
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Reduction and Locked Plate Fixation of Periprosthetic Femoral Fractures Above a Total Knee Arthroplasty. Tech Orthop 2013. [DOI: 10.1097/bto.0000000000000026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
Complex floating knee injuries, comprising complete articular distal femur and proximal tibia fractures, are a significant challenge in Orthopedic Traumatology. Traditional surgical approaches can result in a limited exposure, compromising osteosynthesis, with an extensive soft tissue dissection predisposing to adhesion of the quadriceps and arthrofibrosis. The Patella Osteotomy technique provides unrivaled visualization of the articular surfaces of the knee, with a limited soft tissue dissection to permit the anatomical reconstruction of the articular injury, while minimizing the risk of postsurgical complications and reducing intraoperative fluoroscopy time.
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Affiliation(s)
- Simon M Donald
- Department of Orthopedic Surgery, Mona Vale Hospital, Mona Vale, NSW, Australia.
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Khalil AES, Ayoub MA. Highly unstable complex C3-type distal femur fracture: can double plating via a modified Olerud extensile approach be a standby solution? J Orthop Traumatol 2012; 13:179-88. [PMID: 22733172 PMCID: PMC3506844 DOI: 10.1007/s10195-012-0204-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2011] [Accepted: 06/06/2012] [Indexed: 11/30/2022] Open
Abstract
Background Multiplanar complex C3-type unstable distal femoral fractures present many challenges in terms of approach and fixation. This prospective study investigates a possible solution to these problems through double plating with autogenous bone grafting via a modified Olerud extensile approach. Materials and methods Twelve patients with closed C3-type injuries were included; eight of them were male, and their mean age was 33.5 years (range 22–44 years). Mechanism of injury was road traffic accident (RTA) in nine patients and fall from height in the other three cases. Eight cases were operated during the first week and four cases during the second week after injury. Mean follow-up was 13.7 months (range 11–18 months). Results Mean radiological healing time was 18.3 weeks (range 12-28 weeks), and all cases had good radiological healing without recorded nonunion or malunion. Clinically, two cases (16.7 %) had excellent results, five cases (41.7 %) had good results, three cases (25 %) had fair results, and two cases (16.7 %) had poor results. No cases developed skin necrosis, deep infection, bone collapse, or implant failure. However, two cases (16.7 %) had limited knee flexion to 90° and required subsequent quadricepsplasty. Conclusions Use of this modified highly invasive approach facilitated anatomical reconstruction of C3-type complex distal femoral fractures with lower expected complication rate and acceptable clinical outcome, especially offering good reconstruction of the suprapatellar pouch area. It can be considered as a standby solution for managing these difficult injuries.
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Affiliation(s)
- Ayman El-Sayed Khalil
- Department of Orthopaedic Surgery and Traumatology, Faculty of Medicine, Tanta University Hospital, University of Tanta, Al-Geish Street, Tanta, Egypt.
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