108 results match your criteria Joint Reduction Patella Dislocation


Braces and Splints for Common Musculoskeletal Conditions.

Am Fam Physician 2018 Nov;98(10):570-576

West Virginia University School of Medicine-Eastern Campus, Harpers Ferry, WV, USA.

Braces and splints can immobilize and protect joints, reduce pain, decrease swelling, and facilitate healing of acute injuries. They are also used for injury prevention and chronic pain reduction, and to alter the function of a joint. The medial unloading (valgus) knee brace is an option for patients with medial knee osteoarthritis, but evidence of long-term benefit is limited. Read More

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November 2018
16 Reads

Derotational osteotomy at the distal femur is effective to treat patients with patellar instability.

Knee Surg Sports Traumatol Arthrosc 2018 Oct 13. Epub 2018 Oct 13.

Department of Orthopaedic Sports Medicine, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.

Purpose: Increased femoral antetorsion influences patellofemoral joint kinematics. The aim of this study was to retrospectively evaluate the clinical outcome after derotational osteotomies and combined procedures in patients with patellofemoral instability.

Methods: All patients with derotational osteotomies and combined procedures in patients with patellofemoral instability and increased femoral antetorsion performed between 2007 and 2016 were retrospectively analyzed. Read More

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http://link.springer.com/10.1007/s00167-018-5212-z
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http://dx.doi.org/10.1007/s00167-018-5212-zDOI Listing
October 2018
9 Reads

[Reduction techniques in intramedullary nailing osteosynthesis].

Unfallchirurg 2018 Oct 1. Epub 2018 Oct 1.

Zentrum für Orthopädie und Unfallchirurgie, Universitätsmedizin der Johannes Gutenberg-Universität, Langenbeckstr. 1, 55131, Mainz, Deutschland.

Intramedullary nailing was originally conceived for the stabilization of shaft fractures of long bones. Due to new nail designs and multiple interlocking possibilities, the spectrum of nailing has significantly increased. Nailing of fractures beyond the isthmus is technically challenging because fractures need to be reduced before the nailing procedure starts. Read More

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http://link.springer.com/10.1007/s00113-018-0560-1
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http://dx.doi.org/10.1007/s00113-018-0560-1DOI Listing
October 2018
11 Reads

Patella incarceration with associated patella fracture: a rare case of a paediatric patient with no associated femoral fracture.

BMJ Case Rep 2018 Sep 14;2018. Epub 2018 Sep 14.

Trauma and Orthopaedic Department, West Hertfordshire Hospitals NHS Trust, Watford, UK.

We describe the case of a 15-year-old girl who presented to the Accident and Emergency Department with right knee pain and a tense effusion following a twist and fall directly onto her right knee. An MRI scan demonstrated that she had an incarcerated dislocated patella with an associated patella avulsion fracture. This required open reduction. Read More

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http://dx.doi.org/10.1136/bcr-2018-226603DOI Listing
September 2018
2 Reads

A cadaveric model to evaluate the effect of unloading the medial quadriceps on patellar tracking and patellofemoral joint pressure and stability.

J Exp Orthop 2018 Sep 10;5(1):34. Epub 2018 Sep 10.

Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, SW7 2AZ, UK.

Background: Vastus Medialis Muscles (VMM) damage has been widely identified following patellar dislocation. Rehabilitation programmes have been suggested to strengthen the VMM and reduce clinical symptoms of pain and instability. This controlled laboratory study investigated the hypothesis that reduced Vastus Medialis Obliquus (VMO) and Vastus Medialis Longus (VML) muscle tension would alter patellar tracking, stability and PFJ contact pressures. Read More

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http://dx.doi.org/10.1186/s40634-018-0150-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6131679PMC
September 2018
1 Read

Distalization and Medialization of Tibial Tuberosity for the Treatment of Potential Patellar Instability with Patella Alta.

Joints 2018 Jun 22;6(2):80-84. Epub 2018 Jun 22.

Orthopaedic Unit, Casa di Cura "Villa Igea" Hospital, Ancona, Italy.

 The aim of the study was to test the distalization and medialization of the tibial tuberosity (DMTT) for the treatment of patellar instability associated with patella alta, focusing on residual instability and pain.  Twenty-four consecutive patients (26 knees) suffering from patellofemoral instability and patella alta were treated by DMTT. Two groups were identified, which differed for documented history of frank patella dislocation. Read More

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http://dx.doi.org/10.1055/s-0038-1661340DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6059852PMC
June 2018
1 Read

Combined distal femoral osteotomy (DFO) in genu valgum leads to reliable patellar stabilization and an improvement in knee function.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 4;26(12):3572-3581. Epub 2018 Jun 4.

Chirurgisch-Traumatologisches Zentrum, Asklepios Klinik St. Georg, Lohmühlenstr. 5, 20099, Hamburg, Germany.

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. Read More

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http://dx.doi.org/10.1007/s00167-018-5000-9DOI Listing
December 2018
7 Reads

Medical speciality, medication or skills: key factors of prehospital joint reduction. A prospective, multicenter cohort study.

Eur J Trauma Emerg Surg 2018 Aug 7;44(4):637-642. Epub 2018 Mar 7.

Department of General-, Trauma- and Reconstructive Surgery, Munich University Hospital, Nußbaumstr. 20, 80336, Munich, Germany.

Purpose: Joint dislocations occur frequently in prehospital settings. The medical specialities of emergency physicians are heterogeneous. Decision making and the success rates of reduction attempt can vary greatly. Read More

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http://dx.doi.org/10.1007/s00068-018-0933-8DOI Listing
August 2018
6 Reads

Effects of an 8-week strength training intervention on tibiofemoral joint loading during landing: a cohort study.

BMJ Open Sport Exerc Med 2018 13;4(1):e000273. Epub 2018 Jan 13.

School of Sport, Health and Applied Science, St Mary's University, Twickenham, London, UK.

Objectives: To use a musculoskeletal model of the lower limb to evaluate the effect of a strength training intervention on the muscle and joint contact forces experienced by untrained women during landing.

Methods: Sixteen untrained women between 18 and 28 years participated in this cohort study, split equally between intervention and control groups. The intervention group trained for 8 weeks targeting improvements in posterior leg strength. Read More

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http://dx.doi.org/10.1136/bmjsem-2017-000273DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5783107PMC
January 2018
2 Reads

Deepening trochleoplasty combined with balanced medial patellofemoral ligament reconstruction for an adequate graft tensioning.

World J Orthop 2017 Dec 18;8(12):935-945. Epub 2017 Dec 18.

Department of Orthopedics, Trauma Surgery and Sports Medicine, Johanna Etienne Hospital, Neuss 41462, Germany.

Aim: To evaluate our modified deepening trochleoplasty combined with a balanced medial patellofemoral ligament (MPFL) reconstruction for soft tissue alignement.

Methods: Thirty-three knees with with recurrent patellar dislocations and a trochlear dysplasia in 30 patients (m/f = 12/21, mean age 24 ± 9 years) underwent a combination of a modified deepening trochleoplasty and a balanced MPFL reconstruction for a medial soft tissue alignement. After a mean follow-up period of 29 ± 23 mo, patients' return to sports, possible complications as well as the clinical outcomes using the Kujala, International Knee Documentation Committee (IKDC) and Lysholm scoring were evaluated. Read More

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http://dx.doi.org/10.5312/wjo.v8.i12.935DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5745437PMC
December 2017
4 Reads

[Plate osteosynthesis of patellar fractures].

Oper Orthop Traumatol 2017 Dec 25;29(6):509-519. Epub 2017 Oct 25.

Chirurgisch-Traumatologisches Zentrum, Asklepios Klinik St. Georg, Lohmühlenstraße 5, 20099, Hamburg, Deutschland.

Objective: Anatomic reconstruction of the retropatellar articular surface and repair of the extensor mechanism of the knee joint. The osteosynthesis should allow immediate mobilization as part of an early functional postoperative rehabilitation protocol.

Indications: Displaced fractures of the patella, especially multifragment and comminuted fractures with a retropatellar incongruity or dislocation of >2 mm. Read More

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http://dx.doi.org/10.1007/s00064-017-0522-8DOI Listing
December 2017
1 Read

Total knee arthroplasty for treatment of osteoarthritis with prolonged patellar dislocation.

Arthroplast Today 2017 Mar 4;3(1):25-28. Epub 2016 Nov 4.

Department of Orthopaedic Surgery, Shiga University of Medical Science, Otsu, Shiga, Japan.

Prolonged dislocation of the patella is a rare condition and is often related to severe osteoarthritis (OA) of the femorotibial (FT) joint. For this condition's treatment, numerous surgical techniques using total knee arthroplasty (TKA) have been published. To the best of our knowledge, this case report is the first description of the use of lateral release alone to treat recurrent patellar subluxation with TKA. Read More

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http://dx.doi.org/10.1016/j.artd.2016.10.001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5365408PMC
March 2017
11 Reads

Imaging assessment of patellar instability and its treatment in children and adolescents.

Pediatr Radiol 2016 May 9;46(5):618-36. Epub 2016 Feb 9.

Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.

Transient patellar dislocation is a common entity in children and adolescents, characterized by lateral dislocation of the patella, usually with spontaneous reduction. Many predisposing conditions have been described, including trochlear dysplasia, excessive lateral patellar tilt, patella alta and lateralization of the tibial tuberosity. Associated injuries are bone bruises of the patella and lateral femoral condyle, tears of the medial retinaculum that include the medial patellofemoral ligament (MPFL), tears of the vastus medialis obliquus muscle, injuries of articular cartilage, and intra-articular bodies. Read More

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http://dx.doi.org/10.1007/s00247-015-3520-8DOI Listing
May 2016
15 Reads

Current concepts review: Fractures of the patella.

GMS Interdiscip Plast Reconstr Surg DGPW 2016 18;5:Doc01. Epub 2016 Jan 18.

Center for Musculoskeletal Surgery, Charité - University Medicine Berlin, Germany.

Fractures of the patella account for about 1% of all skeletal injuries and can lead to profound impairment due to its crucial function in the extensor mechanism of the knee. Diagnosis is based on the injury mechanism, physical examination and radiological findings. While the clinical diagnosis is often distinct, there are numerous treatment options available. Read More

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http://dx.doi.org/10.3205/iprs000080DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4717300PMC
January 2016
13 Reads

Clinics in diagnostic imaging (163). Transient lateral patellar dislocation with trochlear dysplasia.

Singapore Med J 2015 Oct;56(10):542-7; quiz 548

Department of Diagnostic Radiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.

A 14-year-old girl presented with left knee pain and swelling after an injury. Magnetic resonance (MR) imaging showed a transient lateral patellar dislocation with patellar osteochondral fracture, medial patellofemoral ligament tear and underlying femoral trochlear dysplasia. Open reduction and internal fixation of the osteochondral fracture, plication of the medial patellar retinaculum and lateral release were performed. Read More

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http://dx.doi.org/10.11622/smedj.2015149DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613928PMC
October 2015
1 Read

The effects of a dynamic patellar realignment brace on disease determinants for patellofemoral instability in the upright weight-bearing condition.

J Orthop Surg Res 2015 Aug 19;10:126. Epub 2015 Aug 19.

Gelenk Klinik, Gundelfingen, Freiburg, Germany.

Background: Patellar stabilizing braces are used to alleviate pain and prevent subluxation/dislocation by having biomechanical effects in terms of improved patellar tracking. The purpose of this study is to analyze the effects of the dynamic patellar realignment brace, Patella Pro (Otto Bock GmbH, Duderstadt, Germany), on disease determinants in subjects with patellofemoral instability using upright weight-bearing magnetic resonance imaging (MRI).

Methods: Twenty subjects (8 males and 12 females) with lateral patellofemoral instability were studied in an open-configuration magnetic resonance imaging scanner in an upright weight-bearing position at full extension (0° flexion) and 15° and 30° flexion with and without the realignment brace. Read More

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http://dx.doi.org/10.1186/s13018-015-0265-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4539720PMC
August 2015
11 Reads

Closed Reduction of Subacute Patellar Dislocation Using Saline Joint Insufflation: A Technical Trick.

Am J Orthop (Belle Mead NJ) 2015 Jul;44(7):299-301

Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY.

Patellar dislocations often spontaneously reduce or are reduced easily by experienced professionals. However, some dislocations can prove difficult to reduce and may require sedation or operative management. Our case report suggests an alternative method to facilitate reduction of patellar dislocations. Read More

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July 2015
3 Reads

[Arthrogryposis: clinical manifestations and management].

Arch Pediatr 2015 Aug 2;22(8):830-9. Epub 2015 Jul 2.

Service de chirurgie orthopédique et traumatologique, CHU Habib-Bourguiba, 3029 Sfax, Tunisie; Faculté de médecine de Sfax, Sfax, Tunisie.

Introduction: Arthrogryposis is a condition existing at birth, seen in different diseases that have in common the existence of multiple joint stiffness. The clinical presentation is diversified and the functional prognosis depends on the etiology, which makes therapeutic options different from one case to another. The objective of this study was to describe clinical manifestations observed in arthrogrypotic patients and show the different therapeutic methods and functional results. Read More

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http://dx.doi.org/10.1016/j.arcped.2015.05.014DOI Listing
August 2015
6 Reads

Intra-Articular Dislocation of the Patella With Associated Hoffa Fracture in a Skeletally Immature Patient.

Am J Orthop (Belle Mead NJ) 2015 Jun;44(6):E195-8

Department of Orthopaedics, Rutgers University-New Jersey Medical School, Newark, NJ.

Since 1887, approximately 50 cases of an intra-articular patellar dislocation have been reported in the worldwide literature. The vast majority of patients required an open reduction of the patella or closed reduction under general anesthesia. This injury has never been reported in association with a coronal shear fracture of the femoral condyle. Read More

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June 2015
1 Read

Results of anatomic gracilis MPFL reconstruction with precise tensioning.

Knee 2015 Dec 26;22(6):580-4. Epub 2015 May 26.

Laboratory of Exercise Physiology (LPE EA 4338), Lyon University, Saint-Etienne, France; Department of Orthopaedic Surgery, University Hospital Center of Saint-Etienne, France.

Background: The medial patellofemoral ligament (MPFL) is the most commonly injured structure in patients with objective patellar instability. The objective of this study was to prospectively evaluate the clinical and radiographic results of MPFL reconstruction in 50 patients with chronic patellar instability.

Methods: Fifty patients with chronic patellar instability, aged 15-39 years, were included. Read More

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http://dx.doi.org/10.1016/j.knee.2015.01.006DOI Listing
December 2015
3 Reads

Patella dislocation with vertical axis rotation: the "dorsal fin" patella.

Case Rep Orthop 2015 25;2015:328386. Epub 2015 Mar 25.

Trauma and Orthopaedic Department, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hill Road, Cambridge CB2 0QQ, UK.

A 44-year-old woman presented following minor trauma to her right knee. While dancing she externally rotated around a planted foot and felt sudden pain in her right knee. She presented with her knee locked in extension with a "dorsal fin" appearance of the soft tissues tented over the patella. Read More

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http://dx.doi.org/10.1155/2015/328386DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4390077PMC
April 2015
13 Reads
3 Citations

Surgical versus non-surgical interventions for treating patellar dislocation.

Cochrane Database Syst Rev 2015 Feb 26(2):CD008106. Epub 2015 Feb 26.

Faculty of Medicine and Health Sciences, University of East Anglia, Queen's Building, Norwich, Norfolk, UK, NR4 7TJ.

Background: Patellar dislocation occurs when the patella disengages completely from the trochlear (femoral) groove. Following reduction of the dislocation, conservative (non-surgical) rehabilitation with physiotherapy may be used. Since recurrence of dislocation is common, some surgeons have advocated surgical intervention rather than non-surgical interventions. Read More

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http://doi.wiley.com/10.1002/14651858.CD008106.pub3
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http://dx.doi.org/10.1002/14651858.CD008106.pub3DOI Listing
February 2015
8 Reads

First-Time Patellofemoral Dislocation: Risk Factors for Recurrent Instability.

J Knee Surg 2015 Aug 29;28(4):303-9. Epub 2015 Jan 29.

Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.

Patellofemoral instability is a complex problem, which can be difficult to manage. The purpose of this study was to describe the demographics of patients with a first-time patellofemoral dislocation, and identify risk factors for recurrent instability. This was a single institution, institutional review board-approved, retrospective review of >2,000 patients with a patellar dislocation between 1998 and 2010. Read More

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http://dx.doi.org/10.1055/s-0034-1398373DOI Listing
August 2015
4 Reads

Femoral trochlear groove development after patellar subluxation and early reduction in growing rabbits.

Knee Surg Sports Traumatol Arthrosc 2016 Jan 11;24(1):247-53. Epub 2014 Oct 11.

Third Hospital of Hebei Medical University, 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, China.

Purpose: This animal study aimed to investigate whether early reduction in patellar subluxation could minimize femoral trochlear dysplasia in growing rabbits.

Methods: Sixty rabbits were divided into four groups (N = 30 knees/group). The control group underwent no surgical procedures. Read More

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http://dx.doi.org/10.1007/s00167-014-3372-zDOI Listing
January 2016
259 Reads

In-game Management of Common Joint Dislocations.

Sports Health 2014 May;6(3):246-55

Washington University in Saint Louis, Saint Louis, Missouri.

Context: Sideline management of sports-related joint dislocations often places the treating medical professional in a challenging position. These injuries frequently require prompt evaluation, diagnosis, reduction, and postreduction management before they can be evaluated at a medical facility. Our objective is to review the mechanism, evaluation, reduction, and postreduction management of sports-related dislocations to the shoulder, elbow, finger, knee, patella, and ankle joints. Read More

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http://dx.doi.org/10.1177/1941738113499721DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4000468PMC
May 2014
4 Reads

Case report: congenital dislocation of the radial head -a two-in-one approach.

F1000Res 2014 22;3:22. Epub 2014 Jan 22.

Department of Orthopaedics, Government Medical College, Kozhikode, 673008, India.

Background: Congenital dislocation of the radial head of the elbow is rare. It is genetically transmitted in some cases and is often associated with syndromes, such as Nail-Patella syndrome, antecubital pterygium and ulnar dysplasia. About two thirds are posterior, with the remainder being either anterior (15%) or lateral (15%). Read More

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http://dx.doi.org/10.12688/f1000research.3-22.v1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4857746PMC
May 2016
5 Reads

Bicompartmental versus total knee arthroplasty for medial and patellofemoral osteoarthritis.

J Orthop Surg (Hong Kong) 2013 Dec;21(3):281-4

Department of Orthopaedic Surgery, National University Hospital, Singapore.

Purpose: To compare the outcome of bicompartmental knee arthroplasty (BKA) versus total knee arthroplasty (TKA) in patients with medial and patellofemoral knee osteoarthritis.

Methods: Records of 17 women and 10 men with medial and patellofemoral osteoarthritis of the knee who underwent BKA (n=15) or TKA (n=12) were reviewed. All surgeries were performed by the same surgeon. Read More

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http://dx.doi.org/10.1177/230949901302100303DOI Listing
December 2013
5 Reads

Congenital medial dislocation of the patella with multiple congenital anomalies: case report and method of treatment.

J Pediatr Orthop B 2014 Mar;23(2):126-9

Departments of aKnee Surgery bOrthopedics Surgery, Firouzgar Hospital cDepartment of Pediatrics, Emam Khomeimi Hospital, School of Medicine, Tehran University of Medical Science, Tehran, Iran.

Lateral dislocation of the patella is reported frequently in orthopaedics references but congenital medial patellar dislocation is reported rarely. An 8-year-old girl was referred to our department for knee surgery. She had genuvarum, knee flexion contracture and tibial internal rotation. Read More

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http://dx.doi.org/10.1097/BPB.0b013e32836330c6DOI Listing
March 2014
7 Reads

Medial patellotibial ligament (MPTL) reconstruction for patellar instability.

Knee Surg Sports Traumatol Arthrosc 2014 Oct 7;22(10):2491-8. Epub 2013 Nov 7.

Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica, ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via di Barbiano, 1/10, 40136, Bologna, Italy,

Purpose: To evaluate mid-term clinical and radiographic outcomes after an original medial patellotibial ligament reconstruction in patients with patellar dislocation.

Methods: Twenty-nine knees (27 patients, 8 males and 19 females) treated for patellar dislocation with medialization of the patellar tendon medial third combined with medial and lateral release were evaluated clinically and radiographically at a mean follow-up of 6.1±2. Read More

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http://dx.doi.org/10.1007/s00167-013-2751-1DOI Listing
October 2014
11 Reads

Isolated and combined medial patellofemoral ligament reconstruction in revision surgery for patellofemoral instability: a prospective study.

Am J Sports Med 2013 Sep 7;41(9):2128-35. Epub 2013 Aug 7.

Department for Trauma Surgery and Orthopaedic Surgery, Krankenhaus Landshut-Achdorf, Landshut, Germany.

Background: Persistent pain and redislocations after surgical treatment of patellofemoral instability are described in up to 40% of patients. However, prospective outcome data about revision surgery are missing.

Purpose: To evaluate the clinical outcome after revision medial patellofemoral ligament (MPFL) reconstruction using isolated and combined procedures, with a follow-up of 24 months. Read More

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http://dx.doi.org/10.1177/0363546513498572DOI Listing
September 2013

Combined trochleoplasty and MPFL reconstruction for treatment of chronic patellofemoral instability: a prospective minimum 2-year follow-up study.

Knee Surg Sports Traumatol Arthrosc 2014 Nov 14;22(11):2591-8. Epub 2013 Jul 14.

Department of Orthopedic Sports Surgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany,

Purpose: Excessive trochlear dysplasia may be responsible for recurrent patellofemoral instability (PFI) due to a missing bony guidance for the patella in early flexion. Thus, an isolated medial patellofemoral ligament reconstruction (MPFLR) can be insufficient, since it mainly addresses instability close to extension and additionally can increase patellofemoral pressure leading to pain in flat or convex trochlear dysplasia. Therefore, in combination with a trochleoplasty, an anatomical trochlear groove is created, resulting in patellofemoral stability also in flexion, while patellofemoral pressure is normalized. Read More

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http://link.springer.com/content/pdf/10.1007/s00167-013-2603
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http://link.springer.com/10.1007/s00167-013-2603-z
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http://dx.doi.org/10.1007/s00167-013-2603-zDOI Listing
November 2014
4 Reads

Predictors of recurrent instability after acute patellofemoral dislocation in pediatric and adolescent patients.

Am J Sports Med 2013 Mar 22;41(3):575-81. Epub 2013 Jan 22.

Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA.

Background: Patellofemoral instability is common in the pediatric and adolescent population, yet prognosis after the first dislocation has been difficult to determine.

Purpose: To describe the demographics of pediatric and adolescent patients with a first-time patellofemoral dislocation and to determine predictors of recurrent instability.

Study Design: Case-control study; Level of evidence, 3. Read More

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http://dx.doi.org/10.1177/0363546512472873DOI Listing
March 2013
3 Reads

Severe valgus deformity of the knee with permanent patellar dislocation associated with melorheostosis: a case report and review of the literature.

Knee 2014 Mar 8;21(2):589-93. Epub 2013 Jan 8.

Department of Orthopaedic Surgery, Keio University, School of Medicine, Japan.

We present a case of an 8-year-old boy diagnosed with melorheostosis who was suffering from severe genu valgum, permanent dislocation of the patella, knee flexion contracture and leg length shortening. Soft tissue contracture of the limb and subsequent joint deformities were reported to represent clinical manifestations of pediatric melorheostosis. As the epiphyseal plate had not closed, patellar reduction was achieved by soft tissue surgical stabilization, including lateral retinacular release, medial retinaculum plication, and transfer of the lateral half of the patellar tendon. Read More

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http://dx.doi.org/10.1016/j.knee.2012.11.004DOI Listing
March 2014
14 Reads

Rare cause of knee pain after martial arts demonstration: a case report.

J Emerg Med 2013 Apr 29;44(4):760-3. Epub 2012 Nov 29.

Department of Emergency Medicine, Cleveland Clinic Florida, Weston, FL 33331, USA.

Background: Patellar dislocations are a commonly treated injury in the Emergency Department (ED), with a majority of cases involving lateral subluxation of the patella outside of the joint space. Intra-condylar dislocations of the patella are rare. Of the two types of axis rotation, vertical and horizontal, the vertical occurs five times less frequently. Read More

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http://dx.doi.org/10.1016/j.jemermed.2012.09.023DOI Listing
April 2013
2 Reads

[Patellar osteochondral injury as onset of patellar instability].

Rev Esp Cir Ortop Traumatol 2012 Jan-Feb;56(1):63-6. Epub 2011 Dec 20.

Servicio de Ortopedia y Traumatología Pediátricas, Hospital Sant Joan de Déu, Barcelona, España.

Patellar osteochondral fractures with no dislocation are uncommon and usually affect the centromedial facet of the patella. We present the case of a 10 year-old, overweight, female patient. She was seen in the emergency room after suffering an accidental fall, assessed as an osteochondral fracture-dislocation of the right patella with upper-outer displaced free fragments. Read More

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http://dx.doi.org/10.1016/j.recot.2011.10.007DOI Listing
September 2013
2 Reads

Open reduction of irreducible posterolateral rotary knee dislocation without sectioning of incarcerated vastus medialis: a case report with video illustration.

Knee 2014 Mar 14;21(2):582-5. Epub 2012 Nov 14.

Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. Electronic address:

Traumatic knee joint dislocations are relatively rare. Most of knee dislocations are reduced by closed manipulation. However occasionally, especially in the case of soft tissue incarceration, closed reduction may not be possible and open reduction is mandatory. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09680160120017
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http://dx.doi.org/10.1016/j.knee.2012.09.018DOI Listing
March 2014
5 Reads

Extra-articular synovial fluid extravasation following operative fixation of an osteochondral fracture of the patella.

Orthopedics 2012 Aug;35(8):e1267-71

Department of Surgery, Division of Orthopaedic Surgery, A.T. Still University of Health Sciences, Kirksville, MO 63501, USA.

Osteochondral fracture of the patella following a lateral patellar dislocation can be treated with operative and nonoperative techniques that are dictated by the clinical presentation. In the presence of large fragments following acute fractures, arthroscopic retrieval and fixation are advocated, whereas smaller displaced fragments may be removed and discarded as loose bodies. Several methods of fixation exist for osteochondral fractures of the patella, including the use of cannulated and noncannulated screws. Read More

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http://dx.doi.org/10.3928/01477447-20120725-32DOI Listing
August 2012
2 Reads

Horizontal intra-articular patellar dislocation resulting in quadriceps avulsion and medial patellofemoral ligament tear: a case report.

J Pediatr Orthop B 2013 Jul;22(4):329-32

Department of Orthopaedic Surgery, Division of Sports Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts 02115, USA.

Intra-articular patellar dislocations are rare. We present a 13-year-old boy who sustained a complete horizontal intra-articular patellar dislocation following blunt trauma to the flexed knee. Closed reduction was unsuccessful and open reduction indicated a repairable quadriceps avulsion and medial patellofemoral ligament tear. Read More

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http://content.wkhealth.com/linkback/openurl?sid=WKPTLP:land
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http://dx.doi.org/10.1097/BPB.0b013e328357182bDOI Listing
July 2013
5 Reads

Bioabsorbable pins for treatment of osteochondral fractures of the knee after acute patella dislocation in children and young adolescents.

Adv Orthop 2012 14;2012:249687. Epub 2012 Jun 14.

1st Department of Orthopaedic Surgery, P. & A. Kyriakou Children's Hospital, Athens, Greece.

A retrospective study was performed on the use of bioabsorbable pins in the fixation of osteochondral fractures (OCFs) after traumatic patellar dislocation in children. Eighteen children (13 females, 5 males) aged 11 to 15 years (mean age 13.1 years) with osteochondral fracture (OCF) of the knee joint were treated at the authors' institution. Read More

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http://downloads.hindawi.com/journals/aorth/2012/249687.pdf
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http://www.hindawi.com/journals/aorth/2012/249687/
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http://dx.doi.org/10.1155/2012/249687DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3384928PMC
August 2012
2 Reads

Arthroscopic repair of medial patellofemoral ligament avulsion in acute patellar dislocation in skeletally immature patient--a case report.

Knee 2012 Oct 15;19(5):713-5. Epub 2012 Mar 15.

The Catholic University of Korea, Department of Orthopaedic Surgery, Daejeon, Republic of Korea.

Acute patellar dislocation is a severe injury to the knee and usually manifests with symptoms such as giving way, a sensation of lateral displacement of the patella accompanied by hemarthrosis and tenderness over the medial epicondylar region to palpation. Spontaneous reduction of the patella makes the diagnosis more difficult in initial evaluation. Radiographs often show a small bony avulsion at the medial border of the patella, which may represent an injury to the medial restraints. Read More

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http://dx.doi.org/10.1016/j.knee.2012.02.006DOI Listing
October 2012
3 Reads

Patellar tendon tenodesis in association with tibial tubercle distalization for the treatment of episodic patellar dislocation with patella alta.

Am J Sports Med 2012 Feb 22;40(2):346-51. Epub 2011 Nov 22.

Department of Orthopedic Surgery, Hôpital de la Croix-Rousse, Centre Albert Trillat, Lyon, France.

Background: The association between patella alta and episodic patellar dislocation (EPD) has been well described, but its pathophysiology is not completely clear. Patella alta causes decreased contact between the patella and trochlea and decreased resistance to lateral translation of the patella. Additionally, increased patellar tendon length may allow pathologically increased coronal plane patellar motion. Read More

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http://journals.sagepub.com/doi/10.1177/0363546511427117
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http://dx.doi.org/10.1177/0363546511427117DOI Listing
February 2012
9 Reads

Surgical versus non-surgical interventions for treating patellar dislocation.

Cochrane Database Syst Rev 2011 Nov 9(11):CD008106. Epub 2011 Nov 9.

Department of Trauma & Orthopaedic Surgery, Watford General Hospital, Watford, UK.

Background: Patellar dislocation occurs when the patella disengages completely from the trochlear (femoral) groove. Following reduction of the dislocation, conservative rehabilitation with physiotherapy may be used. Since recurrence of dislocation is common, some surgeons have advocated surgical intervention in addition to rehabilitation. Read More

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http://dx.doi.org/10.1002/14651858.CD008106.pub2DOI Listing
November 2011
6 Reads

Irreducible open posterolateral knee dislocation due to medial meniscus interposition.

Acta Orthop Traumatol Turc 2011 ;45(5):382-6

Department of Orthopaedics, Haydarpaşa Numune Training and Research Hospital, İstanbul, Turkey.

Posterolateral knee dislocations are generally irreducible due to the interposition of the medial capsule and retinaculum. These injuries have a 'dimple sign' which shows the invagination of the tissues in the medial joint line. We present an unusual case of an open posterolateral traumatic knee dislocation (KD-4 [ACL/PCL/MCL/LCL-PLC torn] open knee dislocation) without a 'dimple sign'. Read More

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http://dx.doi.org/10.3944/AOTT.2011.2484DOI Listing
February 2012
7 Reads

[The treatment of patellar dislocation: a systematic review].

Z Orthop Unfall 2011 Dec 3;149(6):630-45. Epub 2011 May 3.

Unfallchirurgie, Plastische und Wiederherstellungschirurgie, Universitätsmedizin Göttingen, Robert-Koch-Strasse 40, Göttingen.

Aim: The diagnosis and treatment of patellar dislocation is very complex. The aim of this study is to give an overview of the biomechanics of the patellofemoral joint and to point out the latest developments in diagnosis and treatment of patellar dislocation.

Method: The authors electronically searched Medline, Cochrane and Embase for studies on the biomechanics of the patellofemoral joint and for conservative and surgical treatments after patellar dislocation. Read More

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http://dx.doi.org/10.1055/s-0030-1250691DOI Listing
December 2011
14 Reads

Treatment of a coxofemoral luxation in a pony using a prosthetic capsule technique.

Vet Surg 2011 Jul 26;40(5):631-5. Epub 2011 Apr 26.

Vetsuisse Faculty, Equine Hospital, University of Zurich, Zurich, Switzerland.

Objective: To report open reduction and joint stabilization using a prosthetic capsule technique for treatment of a craniodorsal coxofemoral luxation in a lightweight pony.

Study Design: Clinical report.

Animals: Pony stallion (8 years old, 113 kg). Read More

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http://dx.doi.org/10.1111/j.1532-950X.2011.00837.xDOI Listing
July 2011
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Double fixation of displaced patella fractures using bioabsorbable cannulated lag screws and braided polyester suture tension bands.

Injury 2011 Oct 22;42(10):1116-20. Epub 2011 Feb 22.

Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China.

Purpose: To evaluate the effectiveness and safety of a new double fixation technique for displaced patellar fractures using bioabsorbable cannulated lag screws and braided polyester suture tension bands.

Methods: Fifteen patients (mean age of 46.2 years) with displaced transverse or comminuted patella fractures were enrolled in this prospective study. Read More

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http://dx.doi.org/10.1016/j.injury.2011.01.025DOI Listing
October 2011
6 Reads

[Changes in gait pattern in patients with recurrent patella dislocations after tibial tuberosity transfer by modified Elmsllie-Trillat procedure].

Pol Merkur Lekarski 2010 Jul;29(169):30-2

Wojskowy Instytut Medyczny w Warszawie, Klinika Ortopedii.

Unlabelled: Recurrent lateral patella dislocation, as a kind of patellofemoral malalignment, significantly influences knee biomechanics by the changing patellofemoral movement during flexion and during gait. So far other papers doesn't describe characteristic of the patients' gait with recurrent lateral patella dislocation.

The Aim Of This Study: To evaluate gain pattern patients with recurrent lateral patella luxation in comparison to normal gait pattern. Read More

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July 2010
5 Reads

[Reconstruction of the medial patellofemoral ligament with patellar tendon autograft--preliminary report].

Chir Narzadow Ruchu Ortop Pol 2010 Jan-Feb;75(1):42-6

Oddział Kliniczny Chirurgii Rekonstrukcyjnej i Artroskopowej Stawu Kolanowego, Uniwersytet Medyczny w Łodzi.

Aim Of The Study: The purpose of the study is to estimate the preliminary results of the medial patellofemoral ligament reconstruction with medial strip of patellar tendon autograft.

Materials And Methods: The study was conducted on 6 patients with post-traumatic recurrent patellar dislocation, with an equal number of males and females, aged 18-35 years (mean 27). Follow-up assessments were performed in 4, 12 weeks and 6, 12 months after the surgery. Read More

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June 2010
2 Reads

Vertical dislocation of the patella: report of 2 cases.

Orthopedics 2009 Oct;32(10)

Department of Orthopedics & Trauma, Glan Clwyd Hospital, Bodelwyddan, Rhyl, United Kingdom.

Vertical dislocation of the patella is rare and usually occurs as a result of blunt trauma. The patella rotates around a vertical axis. It can be diagnosed by its typical clinical features. Read More

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http://dx.doi.org/10.3928/01477447-20090818-25DOI Listing
October 2009
12 Reads

The effect on patellofemoral joint stability of selective cutting of lateral retinacular and capsular structures.

J Biomech 2009 Feb 8;42(3):291-6. Epub 2009 Jan 8.

Musculoskeletal Surgery Department, Imperial College London, Charing Cross Hospital, London, UK.

Patient selection for lateral retinacular release (LRR) and its efficacy are controversial. Iatrogenic medial subluxation can occur with inappropriate LRR. The aim of this study was to determine the reduction in patellofemoral stability with progressively more extensive LRR. Read More

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http://dx.doi.org/10.1016/j.jbiomech.2008.11.003DOI Listing
February 2009
2 Reads