Management of Acute Patellar Dislocation: A Case Report

Enix, Dennis E.; Sudkamp, Kasey; Scali, Frank; Keating, Robbyn; Welk, Aaron B.

doi:10.1016/j.jcm.2015.07.002

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…This unexpected injury led to the search of anatomical predisposing factors for dislocation on available plain radiographs pre‐injury. On the X‐Rays, compared to the left side on the patellar axial view, there was a slightly elevated patellar tilt (23° vs.18° on the left) with a lateral shift of the patella on the right side (Figure 2), which could be a predisposing factor 4 . On the contrary, there was no sign of patella alta, patella dysplasia or true trochlear dysplasia.…”

Section: Discussionmentioning

confidence: 97%

“…On the X‐Rays, compared to the left side on the patellar axial view, there was a slightly elevated patellar tilt (23° vs.18° on the left) with a lateral shift of the patella on the right side (Figure 2 ), which could be a predisposing factor. 4 On the contrary, there was no sign of patella alta, patella dysplasia or true trochlear dysplasia. No CT‐scan was conducted before or after the injury to measure the tibial tuberosity to trochlear groove (TT‐TG) distance, but the post‐injury MRI did not show any signs of such a problem.…”

Section: Discussionmentioning

confidence: 98%

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Acute patellar dislocation during isokinetic knee strength testing: A case report

Mihailo,

François

2024

Clinical Case Reports

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Key Clinical MessageIsokinetic testing is a maximal muscle strength test which requires adequate patient's preparation and observer's care. While the available data suggests that isokinetic devices are safe, their use may rarely cause severe injuries. The screening of predisposing anatomical factors could help preventing injuries before testing.AbstractA 29‐year‐old athletic man presented an acute patellar dislocation on a healthy right knee during isokinetic muscle strength testing, which was conducted in the setting of an intensive physical rehabilitation program, for persistent left knee pain after arthroscopic surgery for meniscal tear. This is the first case to occur in an adult male without clear risk factors such as patellar dysplasia. Predisposing factors may include slightly elevated patellar tilt and lateral shift compared to the contralateral knee (researched from subsequent review of pre‐injury X‐rays), and an elevated quadricipital strength in the context of recreational bodybuilding. The dislocation occurred during eccentric extension phase of testing. Medial patellofemoral ligament reconstruction was conducted 6 months later. Isokinetic muscle strength testing is generally considered as a safe method, despite limited data on the devices' safety. Since severe injuries might rarely occur, adequate patient preparation is needed, as well as the screening of predisposing factors.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 98%

Acute patellar dislocation during isokinetic knee strength testing: A case report

Mihailo,

François

2024

Clinical Case Reports

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Agenesis of Medial Patellofemoral Ligament (Mpfl) With Habitual Patellar Dislocation in Adolescent Woman With Cerebral Palsy – A Case Report

Hidayah

Hartono

Manyakori³

et al. 2022

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Background: The current treatment for habitual dislocation and nonoperative treatment failure is surgical therapy. Therefore, this study describes chronic patella dislocation's comprehensive evaluation and management in an adolescent woman with cerebral palsy (CP).Case Report: A 15 years old female patient has suffered knee pain for almost three years. Furthermore, the physical examination revealed positive adam's forward bending test and left knee cap dislocation with positive patellar J-sign at 90°. Radiologic examination of the vertebrae and left knee shows scoliosis left thoracolumbar curved with 43 cobb angle and patellar shift. The patient was then diagnosed with habitual patellar dislocation, spastic diplegia type of CP, and neuromuscular scoliosis, consulted to the pediatric department, and then planned for medial patellofemoral ligament (MPFL) reconstruction. During the surgical examination, we discovered the MPFL Agenesis. Finally, lateral release and plication of the medial retinaculum were selected for surgery and planned to receive a Boston brace for scoliosis. After six weeks of follow up, the patient shows a reduction in pain.Discussion: Lateral release and MPFL reconstruction for patellar stabilization generate better results. However, in this case, the absence of the medial patellar facet and the medial femoral condyle enhances Lateral release and plication of the medial retinaculum more preferable to fixate the left patella and improve functional limitation.Conclusion: Comprehensive and immediate treatment for a patient with habitual patella dislocation and other predisposition diseases increases the chances of success.

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Management of Acute Patellar Dislocation: A Case Report

Cited by 2 publications

References 31 publications

Acute patellar dislocation during isokinetic knee strength testing: A case report

Acute patellar dislocation during isokinetic knee strength testing: A case report

Agenesis of Medial Patellofemoral Ligament (Mpfl) With Habitual Patellar Dislocation in Adolescent Woman With Cerebral Palsy – A Case Report

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