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knee dislocation

Diogo Lino Moura, José Pedro Marques, Pedro Matos, Luís Antunes, Óscar Gonçalves, António Albuquerque
Tibiofemoral unilateral knee dislocations are uncommon, making bilateral dislocations even rarer injuries. Knee dislocation is considered one of the most serious injuries that can affect this joint. Associated complications such as popliteal artery injury are responsible for the important morbidity in these patients. The authors report the case of a 52-year-old man with a traumatic bilateral knee dislocation with associated bilateral popliteal arterial injury. His clinical presentation along with radiographic and angiographic findings are described...
March 2018: Revista Brasileira de Ortopedia
Andrew J Luzzi, Andrew N Fleischman, Christopher N Matthews, Meredith P Crizer, John Wilsman, Javad Parvizi
BACKGROUND: Recently, a bundled payment model was implemented in the United States to improve quality and reduce costs. While hospitals may be rewarded for lowering costs, they may be financially exposed by high cost complications, the so-called bundle busters. We aimed at determining the incidence, etiology, and costs of postacute complications after total joint arthroplasty (TJA). METHODS: A retrospective study was conducted using a prospectively collected database of patients who underwent primary total hip arthroplasty (THA) or total knee arthroplasty (TKA) from January 2015 to April 2016...
June 11, 2018: Journal of Arthroplasty
Adam I Harris, Tianyi David Luo, Jason E Lang, Branko Kopjar
Background: Modern knee prostheses are designed to more closely replicate normal knee kinematics. The JOURNEY II Bi-Cruciate Stabilized Total Knee System (Smith & Nephew Inc., Memphis, TN) is a second-generation motion-guided knee system that demonstrates axial rotation patterns during flexion, which resemble those of the normal knee. The aim of this study was to assess the short-term safety and effectiveness of this system in standard clinical practice. Methods: A total of 186 subjects (209 primary total knee arthroplasties [TKAs]) were enrolled at 12 U...
June 2018: Arthroplasty Today
Deepak Kumar Sharma, Narendra Kumar, Hitesh Lal, Binay Kumar Sahu, Sumon Singphow Saikia
Osteochondritis dissecans is a common disorder of knee and can be treated by various methods, depending on age of patient and stability of chondral fragment. In Osteochondritis dissecans ICRS type III lesion i.e. articular cartilage discontinuity but no dislocation, variable rate of union as well as high rate of non-union was observed in previous studies when treated with arthroscopic or open reduction and fixation. In previous study it has been also shown that platelet rich plasma help in fracture healing...
April 2018: Journal of Clinical Orthopaedics and Trauma
Jannik Frings, Matthias Krause, Ralph Akoto, Peter Wohlmuth, Karl-Heinz Frosch
PURPOSE: Valgus deformities of the lower extremity influence patellofemoral joint kinematics. However, studies examining the clinical outcome after treatment of patellar instability and maltracking due to valgus deformity are rare in recent literature. This study's purpose is to analyze the clinical results after combined distal femoral osteotomy (DFO) for treatment of patellar instability. METHODS: From 2010 to 2016, 406 cases of patellofemoral instability and maltracking were treated...
June 4, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Matthaios Bakalakos, Ioannis S Benetos, Meletios Rozis, John Vlamis, Spiros Pneumaticos
The majority of injuries during a football game are contusions, sprains and/or strains in the thigh, knee and ankle. Hip dislocations account for 2-5% of total hip dislocations, and they can be posterior or anterior. Major complications of traumatic hip dislocation include avascular necrosis of femoral head, secondary osteoarthritis, sciatic nerve injury and heterotopic ossification. On the occasion of a case of a 33-year-old football player, who suffered a posterior hip dislocation, associated with a posterior wall fracture of the acetabulum, while playing football, we review the literature and analyze the various mechanisms of injury, the possible complications and the management including surgery and rehabilitation...
June 2, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Blake M Bodendorfer, Laura E Keeling, Evan M Michaelson, Henry T Shu, Nicholas A Apseloff, James D Spratt, Patrick S Malone, Evan H Argintar
Arthrofibrosis can be a devastating complication after ligamentous knee reconstruction. Beyond early range of motion (ROM), manipulation under anesthesia (MUA) and arthroscopic lysis of adhesions (LOAs) are the most frequently employed interventions for the condition. There is a paucity of data regarding predictive factors of arthrofibrosis requiring MUA and LOA, and even less data regarding changes in validated patient-reported outcome measures following the procedure. A retrospective case-control study was performed at an academic, urban Level I trauma center of patients that developed arthrofibrosis requiring MUA and LOA following ligamentous reconstruction...
May 31, 2018: Journal of Knee Surgery
Cm Jimmy Chan, Ym Jackie Chau, S B Woo, H M Luk, Ivan Fm Lo
Patellar instability is a common debilitating injury affecting young active individuals. It accounts for approximately 3% of all knee injuries. We report a family, of which five members across three generations, who suffered from autosomal dominant familial recurrent patellar dislocation as well as short stature. All of them have recurrent patellar dislocations before the age of 15. The affected patients in all three generations have been genetically screened. Genotypical evaluation revealed a balanced translocation of chromosomes 15 and 20...
May 2018: Journal of Orthopaedic Surgery
Marie Askenberger, Eva Bengtsson Moström, Wilhelmina Ekström, Elizabeth A Arendt, Anna Hellsten, Christina Mikkelsen, Per-Mats Janarv
BACKGROUND: A lateral patellar dislocation (LPD) is the most common traumatic knee injury with hemarthrosis in children. The redislocation rate is high. Varying operative and nonoperative treatments have been advocated with no consensus on the best treatment. PURPOSE: (1) To evaluate if arthroscopic-assisted repair of the medial patellofemoral ligament (MPFL) in patients with an acute first-time traumatic LPD would reduce the recurrence rate and offer better objective/subjective knee function compared with a knee brace without repair...
May 1, 2018: American Journal of Sports Medicine
Xiaojian Li, Zhanli Fu, Changwei Lü
Objective: To investigate the effectiveness of the arthroscopic lateral retinacular release combined with medial patellofemoral ligament (MPFL) reconstruction for patellar dislocation. Methods: Between January 2016 and March 2017, 28 cases (32 knees) with patellar dislocation were treated by arthroscopic lateral retinacular release and MPFL reconstruction. There were 6 males (6 knees) and 22 females (26 knees) with an average age of 21 years (range, 17-29 years)...
February 1, 2018: Chinese Journal of Reparative and Reconstructive Surgery
Tao Ji, Wei Guo, Rongli Yang, Xiaodong Tang, Dasen Li, Yi Yang
Objective: To investigate the surgical characteristics and preliminary effectiveness of Orthofix unilateral external fixator in the treatment of musculoskeletal tumors. Methods: Twenty-two patients received Orthofix unilateral external fixator treatment for bone defect after tumor excision or complications after limb salvage surgery between June 2011 and March 2016. There were 11 males and 11 females with a median age of 23.5 years (range, 4-57 years). The bone defect or limb length discrepancy after tumor resection was at proximal femur in 6 cases, distal femur in 8 cases, diaphysis of femur in 3 cases, proximal tibia in 2 cases, and diaphysis of tibia in 3 cases...
October 1, 2017: Chinese Journal of Reparative and Reconstructive Surgery
Li Li, Hongbo Wang, Yun He, Yu Si, Hongyu Zhou, Xin Wang
Recurrent patellar dislocations were treated via knee arthroscopy combined with C-arm fluoroscopy, and reconstruction of the medial patellofemoral ligaments. Between October 2013 and March 2017, 52 cases of recurrent patellar dislocation [27 males and 25 females; age, 16-47 years (mean, 21.90 years)] were treated. Arthroscopic exploration was performed and patellofemoral joint cartilage injuries were repaired. It was subsequently determined whether it was necessary to release the lateral patellofemoral support belt...
June 2018: Experimental and Therapeutic Medicine
Mitchell I Kennedy, Robert F LaPrade
Anterolateral ligament injuries with knee dislocations appear to be very common. In particular, those that occur with fibular (lateral) collateral ligament injuries are very frequent. Although the majority of injuries in this magnetic resonance imaging study appear to be at the proximal attachment of the anterolateral ligament, caution is advised because there is still no clear agreement as to the anatomic attachment site of the anterolateral ligament on the femur. Distal-based anterolateral ligament injuries, either bony or soft tissue Segond variants, have a large consensus in the peer-reviewed literature as to their anatomic attachment sites and injury pattern identification...
June 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
Xiaohai Yang, Feng Xu, Zifei Yin, Qing Wang
Objective: To summarize the effectiveness of 3.5 mm T support plate fixation for simple postero-lateral tibial plateau fractures by posterolateral inverted L-shaped approach. Methods: Between March 2011 and January 2016, 13 patients with simple posterolateral tibial plateau fracture were treated with 3.5 mm T support plate fixation by posterolateral inverted L-shaped approach. Of 13 cases, 6 were male and 7 were female, aged 28 to 52 years (mean, 43 years). The left side was involved in 5 cases and the right side in 8 cases...
July 1, 2017: Chinese Journal of Reparative and Reconstructive Surgery
Ho Min Lee, Jong Pil Kim, Phil Hyun Chung, Suk Kang, Young Sung Kim, Bo Seong Go
Knee dislocation following total knee replacement arthroplasty is a rare but serious complication. The incidence of dislocation following primary total knee arthroplasty with posterior stabilized implants ranges from 0.15 to 0.5%, and posterior dislocation after revision total knee arthroplasty is even rarer. Here, we report the case of a 76-year-old male who presented with posterior dislocation after posterior stabilized revision total knee arthroplasty.
May 24, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Melissa M Allen, Aaron J Krych, Nick R Johnson, Rohith Mohan, Michael J Stuart, Diane L Dahm
PURPOSE: To report the outcomes for combined tibial tubercle osteotomy (TTO) and medial patellofemoral ligament (MPFL) reconstruction and assess for potential risk factors for recurrent instability and/or poor outcomes. METHODS: The medical record at our institution was reviewed for patients treated with MPFL reconstruction and TTO for recurrent lateral patellar instability from 1998 to 2014. Preoperative imaging was assessed for trochlear dysplasia according to the Dejour classification (high grade = B, C, D) and the presence of patella alta using the Caton-Deschamps ratio (>1...
May 19, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
Philippe M Tscholl, Lukas Ernstbrunner, Linda Pedrazzoli, Sandro F Fucentese
PURPOSE: To analyze the relation of the femoral tunnel (FT) positioning on clinical outcome. METHODS: Patients with recurrent patellar dislocation who underwent medial patellofemoral ligament (MPFL) reconstruction with or without tibial tubercle osteotomy between 1998 and 2012 were included in this retrospective study. Strict postoperative lateral radiographs were mandatory. Knees with previous osseous stabilization surgery, fixed lateral patellar dislocation, valgus knee (>5°), or open growth plates were excluded...
May 19, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
Hui Kang, Jian Li, Xu-Xu Chen, Tao Wang, Shi-Chang Liu, Hong-Chuan Li
Background: Patellar dislocation is one of the most common knee injuries in the adolescent population. It is often combined with osteochondral fracture. The purpose of this study was to compare the outcomes between fixation and excision of osteochondral fractures not involving the bearing surface in adolescent patients with patellar dislocations. Methods: Patients who underwent surgery for osteochondral fracture following patellar dislocation in our institution from 2007 to 2014 were retrospectively evaluated...
June 5, 2018: Chinese Medical Journal
Meng-Qiang Tian, Xian-Teng Yang, Xiao-Bin Tian, Yun-Bo Sun, Yuan-Hui Duan, Li Sun
OBJECTIVE: Infection of total knee arthroplasty (TKA) is a rare but devastating complication. Two-stage revision is an effective treatment for late infected TKA. This study aimed to assess the short-term results of two-stage revision using articulating antibiotic-loaded spacers. METHODS: Twenty-five patients (10 men and 15 women) were diagnosed with late infections after TKA and treated with two-stage revision from April 2006 to August 2010; 19 of these patients had TKA for osteoarthritis and 6 for rheumatoid arthritis...
May 2018: Orthopaedic Surgery
Seth L Sherman, Daniel P Deasis, Andrew J Garrone, Elliott E Voss, Harvey A Oliver
PURPOSE OF REVIEW: The purpose of this review is to evaluate the existing literature regarding return to play (RTP) and return to prior performance (RPP) following patellar stabilization surgery. It will also discuss suggested guidelines regarding RTP, and finally, to encourage future patellofemoral instability research to report and publish results of RTP rates using standardized RTP guidelines. RECENT FINDINGS: There is a lack of validation and universal adoption of standardized RTP guidelines...
May 10, 2018: Current Reviews in Musculoskeletal Medicine
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