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patellar dislocation

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
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
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...
February 1, 2018: American Journal of Sports Medicine
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
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
Li-Chuang Wu, Hai-Bo Zhou, Chao Zhang, Lei Chen, Cai-Long Liu
OBJECTIVE: To study clinical effects of triad operation including reconstruction of medial patellofemoral ligament, release of lateral retinaculum, Fulkerson tibial tubercle osteotomy, medial transfer and advancement under arthroscopy for the treatment of habitual dislocation of patella. METHODS: From March 2010 to May 2016, 35 patients with habitual patellar dislocation were treated with the triad operation, including 14 males, 21 females, ranging in age from 18 to 38 years old, with an average of 25...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Zhi-Dong Zhao, Peng-Cui Li, Xiao-Chun Wei
Up to now, surgical treatment of recurrent lateral patellar dislocation mainly includes: medial patellofemoral ligament reconstruction, tibial tubercle osteotomy, trochleoplasty, lateral retinacular release, derotation osteotomy and so on . Clinical reports show that: the use of a single or combined with several methods have achieved ideal short to mid-term clinical outcomes. However, there is no consolidate criterion concerning the choices of different kinds of surgical ways for the treatment of individual recurrent lateral patellar dislocation...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Hui Zhang, Hua Feng
No abstract text is available yet for this article.
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Chuan-Qiang Shao, Chang-Chun Chen, Chun-Cheng Zhao, Hong-Mei Yang, Yan-Zhong Kang
OBJECTIVE: To investigate surgical method and clinical curative effects of medial patellofemoral ligament (MPFL) reconstruction with great adductor muscular tendon in treating teenagers' recurrent patellar dislocation. METHODS: From May 2012 to September 2014, 19 patients with recurrent dislocation of patellar, including 6 males and 13 females with an average of 16 years old (ranged from 13 to 17 years), the courses of disease ranged from 3 to 18 months(averaged 6 months)...
June 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Jiangtao Dong, Hongtao Xu, Guorong Jin, Dongmei Xin, Jian Zhang, Kai Kang, Shijun Gao, Baicheng Chen, Yong Shen
The purpose of this study was to investigate the patellofemoral joint adaptive changes after discoid lateral meniscus (DLM) plasty.Forty-one patients with unilateral complete type DLM tears were included in this study. Demographic variables, including gender, age, body mass index (BMI), injury to operation interval, type of injury, and follow-up time, were recorded. The evolution of physical examination, imaging index, and functional score were analyzed by Chi-squared test, Wilcoxon signed ranks test, and Friedman test...
February 2018: Medicine (Baltimore)
Jefferson Brand, Richard Hardy, Paul Westerberg
Lateral patellar dislocations can damage the medial patella femoral ligament. Nonoperative care is preferred but some tears may require a surgical intervention. Patella fractures are considered a risk factor after surgery. The technique described in this Technical Note avoids any bone tunnel drilling, which may eliminate the possibility of a patella fracture. The surgical procedure uses periosteal fibro-osseous tunnels to a double-limbed gracilis graft to reconstruct the upper and lower borders as conventionally used for medial patella femoral ligament reconstruction...
October 2017: Arthroscopy Techniques
Bo Kaewkongnok, Anders Bøvling, Nikolaj Milandt, Celia Møllenborg, Bjarke Viberg, Lars Blønd
BACKGROUND: Immobilization devices such as plaster splints, casts and braces have been used for first time patellar dislocation (FTPD) in order to prevent redislocation. This study evaluates different non-operative immobilization regimes upon rates of redislocation. METHODS: A retrospective cohort study with a study population of 1366 in which 601 subjects under 30years with FTPD were included from three hospitals. Exclusion criteria were osteochondral fracture, ligament injury and subluxation...
January 29, 2018: Knee
Maike B Czasche, Jon E Goodwin, Anthony M J Bull, Daniel J Cleather
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. The mechanics of bilateral and unilateral drop landings from a 30 cm platform were recorded preintervention and postintervention, as was the isometric strength of the lower limb during a hip extension test...
2018: BMJ Open Sport & Exercise Medicine
Mohammad M Al-Qattan, Doaa F Andejani, Nadia A Sakati, Khushnooda Ramzan, Faiqa Imtiaz
BACKGROUND: Van Den Ende-Gupta Syndrome (VDEGS) is an extremely rare autosomal recessive syndrome with less than 20 reported families (approximately 40 patients) in the worldwide literature. CASE PRESENTATION: We have assessed one consanguineous Saudi family with typical features of VDEGS. Two siblings were affected with almost identical features; including blepharophimosis, arachnodactyly, flexion contractures of the elbows, camptodactyly, slender ribs, hooked lateral clavicular ends, and bilateral radial head dislocations...
January 30, 2018: BMC Medical Genetics
D Dammerer, M C Liebensteiner, U M Kujala, K Emmanuel, S Kopf, F Dirisamer, J M Giesinger
INTRODUCTION: The Kujala score is the most frequently used questionnaire for patellofemoral disorders like pain, instability or osteoarthritis. Unfortunately, we are not aware of a validated German version of the Kujala score. The aim of our study was the translation and linguistic validation of the Kujala score in German-speaking patients with patella instability and the assessment of its measurement characteristics. MATERIALS AND METHODS: The German Kujala score was developed in several steps of translation...
January 25, 2018: Archives of Orthopaedic and Trauma Surgery
Márcio B Ferrari, George Sanchez, Nicholas I Kennedy, Anthony Sanchez, Katrina Schantz, Matthew T Provencher
Patellofemoral instability is a common cause of anterior knee pain, especially in younger and more active patients. Treatment of instability varies considerably depending on the patient's symptoms as well as the cause of the instability. Lateral instability has a particularly broad spectrum of treatment algorithms including patellar taping, arthroscopy, lateral release, medial patellofemoral ligament (MPFL) reconstruction, MPFL repair, and osteotomy of the tibial tubercle for realignment. Acute traumatic lateral dislocation is commonly associated with a tear of the MPFL and, therefore, needs to be addressed...
August 2017: Arthroscopy Techniques
Xing-Sen Liang, Zheng-Hong Yu, Yi-Kai Li, Ying-Ping Jiang, Xian-Wu Chen, Min Huang
OBJECTIVE: To study the contribution of medial or lateral stabilizer to the stability of the patella, to explore the function and effect of releasing the LPR clinically and to provide a biomechanical basis for the clinical treatment of patellar instability(PI). METHODS: The quadriceps femoris of 6 fresh human cadaver knees were loaded to simulate a normal condition of muscle strength. First the loading force was measured and recorded, which subluxated the patella with the different degrees of knee flexion...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Zhen-Yang Yu, Xu Cai, Wang Gu
OBJECTIVE: To observe the therapeutic effects of arthroscopic treatment for recurrent patellar dislocation by anatomical reconstruction of medial patellarfemoral ligament. METHODS: From June 2009 to December 2014, 25 patients with recurrent patellar dislocation were treated with anatomical reconstruction of medial patellarfemoral ligament surgery under arthroscopy. There were 10 males and 15 females, with an average age of 18.4 years old (ranged, 15 to 25 years old )...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Wan-Quan Cao, Zi-Quan Yang, Gang Wang, Ya-Xun Men, Xiang-Yun Cheng
Patients who suffer from the recurrent patellar dislocation mainly show the recurrent dislocation of patellar, giving way, most patients have the history of trauma or dysplasia of keen joint. Traditional therapies of recurrent patellar dislocation include medical retinaculum placation, lateral retinaculum release, tibial tubercle osteotomy, femoral trochleoplasty etc. In recent years, with the development of anatomical and biomechanical researches on medial patellofemoral ligament(MPFL), more and more experts focus on the role of MPFL played in preventing the patellar dislocation...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Hassan Azimi, Oke Anakwenze
Medial patellofemoral ligament (MPFL) injuries are common in children and young adults. In patients with recurrent patellar dislocations with normal lower-extremity alignment, anatomic reconstruction of the MPFL has been shown to restore patellar stability. We describe a technique that creates an anatomic reconstruction using a dual docking technique into the patella. Our technique is simple and efficacious for reconstructing the MPFL without implant fixation in the patella, allowing a maximal bone-tendon interface for healing...
December 2017: Arthroscopy Techniques
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