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patellar dislocation

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https://www.readbyqxmd.com/read/29786041/fixation-versus-excision-of-osteochondral-fractures-after-patellar-dislocations-in-adolescent-patients-a-retrospective-cohort-study
#1
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
https://www.readbyqxmd.com/read/29752498/arthroscopic-reduction-of-a-locked-patellar-dislocation-a-new-less-invasive-technique
#2
João Teixeira, Carlo Gamba, Jan Ophuis, Geert A Buijze, Gino M M J Kerkhoffs
Patellar dislocation is a condition that is often reduced by itself or through closed manipulation from a trained professional. In this case of a traumatic lateral patellar dislocation, the patella was caught through the rupture in the lateral retinaculum, as is seen in Boutonniere-like lesions. Reduction of the dislocated patella was obtained by arthroscopic reduction.Level of evidence V.
May 11, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29750318/return-to-play-after-patellar-stabilization
#3
REVIEW
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
https://www.readbyqxmd.com/read/29736871/predicting-risk-of-recurrent-patellar-dislocation
#4
REVIEW
Shital N Parikh, Marios G Lykissas, Ioannis Gkiatas
PURPOSE OF REVIEW: Lateral patellar dislocation (LPD) is one of the most common injuries of the knee, especially in a young patient. It is multifactorial with several underlying risk factors. The purpose of this review is to present the most recent data concerning risk factors and their predictive value to estimate recurrent LPD risk. RECENT FINDINGS: Several demographic risk factors (age, skeletal immaturity, sex, bilaterality), mechanism of injury, and anatomic risk factors (trochlear dysplasia, patella alta, excessive tibial tubercle lateralization, increased patellar tilt) have been recognized...
May 7, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29724252/synthetic-versus-autologous-reconstruction-syn-var-of-the-medial-patellofemoral-ligament-a-study-protocol-for-a-randomised-controlled-trial
#5
Adam Tucker, Sam McMahon, Bronwyn McArdle, Bridgeen Rutherford, Danny Acton
BACKGROUND: Recurrent patellar instability incidence is 5.8/100,000 population, and recurrent dislocations are reported in the range of 15-80%. Recurrent instability is multifactorial and can be associated with disorder of limb alignment, osseous development, congruity of the patella in the trochlea and soft tissue static and dynamic constraints. The multifactorial aetiology makes management challenging, and a lack studies in a heterogeneous population with robust clinical outcomes compounds this further...
May 3, 2018: Trials
https://www.readbyqxmd.com/read/29715229/lateralization-of-the-tibial-tubercle-in-recurrent-patellar-dislocation-verification-using-multiple-methods-to-evaluate-the-tibial-tubercle
#6
Keiji Tensho, Hiroki Shimodaira, Yusuke Akaoka, Suguru Koyama, Daisuke Hatanaka, Shota Ikegami, Hiroyuki Kato, Naoto Saito
BACKGROUND: The tibial tubercle deviation associated with recurrent patellar dislocation (RPD) has not been studied sufficiently. New methods of evaluation were used to verify the extent of tubercle deviation in a group with patellar dislocation compared with that in a control group, the frequency of patients who demonstrated a cutoff value indicating that tubercle transfer was warranted on the basis of the control group distribution, and the validity of these methods of evaluation for diagnosing RPD...
May 2, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29715045/corrigendum
#7
(no author information available yet)
Nwachukwu BU, So C, Schairer WW, Shubin Stein BE, Strickland SM, Green DW, Dodwell ER. Economic decision model for first-time traumatic patellar dislocations in adolescents. Am J Sports Med. 2017;45(10):2267-2275. (Original DOI: 10.1177/0363546517703347) In the above article, the fourth author's last name was misspelled as Shubin-Stein. It should have appeared as Shubin Stein.
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29688749/surgical-treatment-with-closing-wedge-distal-femoral-osteotomy-for-recurrent-patellar-dislocation-with-genu-valgum
#8
Kyung Wook Nha, Yoonwon Ha, Seungmin Oh, Vivek P Nikumbha, Sae Kwang Kwon, Woo-Jin Shin, Byung Hoon Lee, Keun Bae Hong
BACKGROUND: Closing-wedge distal femoral osteotomy (CWDFO)-combined with medial reefing and lateral release, if necessary- has been used to treat recurrent patellar dislocation (RPD) with genu valgum. PURPOSE: To evaluate the clinical and radiologic outcomes of surgical treatment with CWDFO for treatment of RPD with genu valgum. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Fourteen consecutive patients (23 knees) with RPD and genu valgum were treated with CWDFO...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29682681/patellar-instability-in-the-skeletally-immature
#9
REVIEW
Charles A Popkin, Ahmad F Bayomy, Evan P Trupia, Charles M Chan, Lauren H Redler
PURPOSE OF REVIEW: This review will focus on the evaluation and management of patellar instability in the developing patient. RECENT FINDINGS: A large number of surgical techniques have been described to prevent recurrent patellofemoral instability in the pediatric population, including both proximal and distal realignment procedures. The wide variety of treatment options highlights the lack of agreement as to the best surgical approach. However, when a comprehensive exam and workup are paired with a surgical plan to address each of the identified abnormalities, outcomes are predictably good...
April 23, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29653442/examination-under-anesthesia-in-patients-with-recurrent-patellar-dislocation-prognostic-study
#10
Ismail Fathalla, James Holton, Tanweer Ashraf
Surgical management of patellar instability is a matter of wide debate. While some authors believe that isolated medial patellofemoral ligament (MPFL) reconstruction is sufficient, others advocate procedures to treat the underlying pathology, namely, patella alta and trochlear dysplasia. Radiological studies have been traditionally used as a determinant of these pathologies and to determine the need for an additional procedure. The value of examination under anesthesia (EUA) in formulating a treatment plan remains unknown...
April 13, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29644317/a-rare-case-of-hoffa-fracture-combined-with-lateral-patellar-dislocation
#11
Martin C Jordan, Leonie A Bittrich, Kai Fehske, Rainer H Meffert, Hendrik Jansen
The coronal unicondylar fracture of the distal femur (AO 33-B3) is a rare intraarticular injury within the weight bearing area of the knee, initially described by Albert Hoffa in 1904. We report an unusual combination of a Hoffa fracture with lateral patellar dislocation in a young adult. Our patient sustained the injury by a sudden twist of his leg during sports. He presented clinically with knee swelling, dislocation of the patella, and localized tenderness; unable to bare weight. After plane radiograph confirmed the injury, manual reduction of the patella was done by hyperextension of the knee and medialward pressure...
June 2017: Trauma Case Reports
https://www.readbyqxmd.com/read/29611848/special-considerations-for-pediatric-patellar-instability
#12
Sean Keyes, Meghan Price, Daniel W Green, Shital N Parikh
Patellar instability in children and adolescents is a challenging subset to treat. Varied forms of instability, ranging from episodic dislocation to fixed dislocation, have been recognized. It is of utmost importance for the treating physician to recognize these different patterns of instability and their associated risk factors, as more complex patterns of instability would require more extensive surgical procedures. Medial patellofemoral ligament (MPFL) reconstruction, by itself, may not suffice or may not be appropriate for the more complex instability patterns...
March 2018: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29611163/cadaveric-biomechanical-study-on-medial-retinaculum-its-stabilising-role-for-the-patella-against-lateral-dislocation
#13
Leonidas Mitrogiannis, Alexandra Barbouti, Panagiotis Kanavaros, Georgios Paraskevas, Aikaterini Kitsouli, Georgios Mitrogiannis, Panagiotis Kitsoulis
BACKGROUND: The aim of this study was to analyse the biomechanical role of medial retinaculum, as a stabilising factor against lateral patellar dislocation. MATERIALS AND METHODS: This cadaveric-biomechanical study included the patellae of ten cadaveric knees, which were surgically exposed and the medial retinaculum of each one was located. A stable 24.51N force was applied to the four parts of the quadriceps, and an increasing lateral displacing force was applied to the patella, up to 5mm dislocation...
April 3, 2018: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29578418/-transosseous-osteosynthesis-of-lower-extremities-bones-fractures-and-quality-of-life-of-patients-in-the-treatment-period
#14
A Dyusupov, A Dyusupov, E Manarbekov, A Bukatov, A Serikbaev
The aim of the study is a comparative analysis of the quality of life in the treatment of fractures of the bones of the lower extremities of various localizations using transosseous and submerged osteosynthesis. We examined 397 patients with injuries of the lower segment of the lower extremity (patellar fractures - 81, multiple bones fractures of the tibia - 84 and fractures of the ankles, accompanied by a dislocation of the foot - 232). Patients were distributed in the subgroups depending on the treatment...
February 2018: Georgian Medical News
https://www.readbyqxmd.com/read/29552477/sulcus-deepening-trochleoplasty-and-medial-patellofemoral-ligament-reconstruction-for-recurrent-patellar-instability
#15
Michael S Laidlaw, Scott M Feeley, Jeffrey R Ruland, David R Diduch
There are multiple etiologies for recurrent patellar instability. While patella alta, an elevated tibial tubercle trochlear groove distance, and prior lateral patellar dislocations with medial patellofemoral ligament (MPFL) insufficiency have been shown to be risk factors for recurrent patellar instability, trochlear dysplasia can result in a significant impediment to normal patellar tracking. With the adequate identification of risk factors, appropriate surgical treatments can be individually tailored to the patient...
February 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29520187/the-correlation-between-the-injury-patterns-of-the-medial-patellofemoral-ligament-in-an-acute-first-time-lateral-patellar-dislocation-on-mr-imaging-and-the-incidence-of-a-second-time-lateral-patellar-dislocation
#16
Guang-Ying Zhang, Hong-Xia Zhu, En-Miao Li, Hao Shi, Wei Liu, Lei Zheng, Zheng-Wu Bai, Hong-Yu Ding
Objective: To evaluate the correlation between the injury patterns of the medial patellofemoral ligament (MPFL) on magnetic resonance imaging in an acute first-time lateral patellar dislocation (LPD) and incidence of a second-time LPD. Materials and Methods: Magnetic resonance images were prospectively analyzed in 147 patients after an acute first-time LPD with identical nonoperative management. The injury patterns of MPFL in acute first-time LPDs were grouped by location and severity for the analysis of the incidence of second-time LPD in a 5-year follow-up...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29492253/case-report-of-a-ruptured-endobutton-used-in-medial-patellofemoral-ligament-reconstruction-causing-patellofemoral-impingement
#17
Raashad Hasan, Wiqqas Jamil
The medial patellofemoral ligament (MPFL) is a key soft tissue stabilizer of the medial patella, with deficiency proven to be a key contributor to patellar dislocation. Reconstruction of this ligament has become a widely employed procedure in managing patients with recurrent patellar dislocation, and is also gaining popularity in the setting of primary dislocation. A wide variety of techniques have been described, differing in the type of graft used, sites for fixation and fixation technique. A number of complications have also been reported in the literature, including post-operative stiffness, apprehension, patellar fracture and recurrence of instability and dislocation...
February 2018: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29466677/analysis-of-graft-length-change-patterns-in-medial-patellofemoral-ligament-reconstruction-via-a-fluoroscopic-guidance-method
#18
Takehiko Matsushita, Daisuke Araki, Yuichi Hoshino, Shinya Oka, Kyohei Nishida, Toshikazu Tanaka, Nobuaki Miyaji, Noriyuki Kanzaki, Kazuyuki Ibaraki, Tomoyuki Matsumoto, Masahiro Kurosaka, Ryosuke Kuroda
BACKGROUND: A fluoroscopic guidance method for medial patellofemoral ligament (MPFL) reconstruction has been widely used to determine the anatomic femoral attachment site. PURPOSE: To examine the graft length change patterns in MPFL reconstruction with a fluoroscopic guidance method. STUDY DESIGN: Cross-sectional study; Level of evidence, 3. METHODS: Forty-four knees of 42 patients who underwent MPFL reconstruction for the treatment of recurrent patellar dislocation were examined prospectively...
April 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29457397/-reconstruction-of-medial-patellofemoral-ligament-with-tightrope-button-fixation-on-the-femoral-side-for-the-treatment-of-traumatic-patellar-dislocation
#19
Yong-Xiang Zuo, Zi-Ping Ma
OBJECTIVE: To explore the operating procedures and therapeutic effects of medial patellofemoral ligament reconstruction with Tightrope(Arthrex, FL, USA) button fixation at lateral femoral cortex. METHODS: From May 2014 to July 2016, 9 patients with traumatic patellar dislocation were treated. There were 5 males and 4 females, ranging in age from 16 to 47 years old, with an average of 23.7 years old. All the patients underment arthroscopic lateral retinaculum release and joint debridement first...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457387/-multi-point-fixation-with-absorbable-cartilage-screws-for-the-treatment-of-osteochondral-fracture-caused-by-patellar-instability
#20
Xu-Hui Zhang, Lei Xia, Gang-Tao Wang, Tan Li
OBJECTIVE: To study clinical effects of multi-point fixation with bioabsorbable cartilage screws for the treatment of osteochondral fracture caused by patellar instability. METHODS: During the period from August 2014 to Steptember 2016, there were 21 patients with osteochondral fracture caused by patellar dislocation, including 7 males and 14 females, ranging in age from 12 to 42 years old, with an average of 27 years old. During the operation, free fractures fragments of cartilage were found with a open surgery, and the patients were treated with fixation by absorbable cartilage screws combined with lateral retinaculum release and medial retinaculum shrinkage...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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