Patellar Sleeve Fracture in an Eight-Year-Old Girl

Superior Pole Sleeve Fracture of the Patella

The American Journal of Sports Medicine ◽

10.1177/0363546510374448 ◽

2010 ◽

Vol 38 (11) ◽

pp. 2331-2336 ◽

Cited By ~ 17

Author(s):

F. Keith Gettys ◽

Robert J. Morgan ◽

James E. Fleischli

Keyword(s):

Sleeve Fracture ◽

Superior Pole

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Patellar Sleeve Fracture: What You Need to Know About

Journal of Orthopedics & Bone Disorders ◽

10.23880/jobd-16000178 ◽

2019 ◽

Vol 3 (2) ◽

pp. 1-3

Author(s):

Rafik Y

Keyword(s):

Sleeve Fracture

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Application of Successful New Downhole Fluid Sampling Technique in Ultra Low Permeability Reservoir in Abu Dhabi Onshore

10.2118/207388-ms ◽

2021 ◽

Author(s):

Hamad A Khairy ◽

Ahmed M Soliman ◽

Islam M Elabsy ◽

Syofvas Syofyan ◽

Andrey Nestyagin ◽

...

Keyword(s):

Stress Measurement ◽

High Stress ◽

Reservoir Rock ◽

Low Permeability ◽

Depth Of Invasion ◽

Sleeve Fracture ◽

Micro Scale ◽

Low Permeability Reservoir ◽

Fracture Closure ◽

Fluid Sampling

Abstract Downhole reservoir fluids sampling in tight formations has been a continuous challenge due to various reasons. The paper presents a technique of successfully collecting downhole fluid samples for first time in ultra-low permeability reservoir having a history of deep invasion. This became possible by initiating micro-scale fractures followed by pumping out for sampling. Using this technique, downhole formation fluid samples were collected, clean-up time was optimized, in addition to acquiring in-situ stress information during the process. A preliminary assessment was performed using open hole formation evaluation logs and pore pressure measurements to identify the most suitable zones for stress measurement and fluid sampling. Single packer sleeve fracture initiation tests were performed to break down the high stress dense layers. In the reservoir rock, the stress measurement involving initiation of a micro-scale fracture was followed by pumping out formation fluid from the fractured zones to collect clean formation fluid samples. The formation breakdown and fracture closure pressure were measured successfully to calibrate minimum and maximum lateral tectonic strains which were valuable inputs for designing the hydraulic fracturing treatment. In the offset wells, fluid sampling attempts from this zone of interest have proven unsuccessful after multiple attempts involving pumping out over 300 liters because of the high depth of invasion leading to a thick flushed zone around the wellbore. The process of initiating micro-scale fractures followed by pumping out provided a high permeability flow channel for efficient fluid sampling. The near wellbore fractures resulted in pumping at higher rates and reaching the higher oil saturated zones of this deeply invaded formation. Hence, formation fluid samples were successfully collected in spite of the low permeability and high invasion typically encountered in this reservoir. Unlike the unsuccessful sampling attempts in the offset wells, this technique of initiating micro-scale fractures in the reservoir rock followed by pumping out helped in collecting formation fluid samples. This technique can be used to collect reservoir fluid samples from micro-Darcy formations and unconventional reservoirs by improving the flow through the induced fractures and thereby reducing the uncertainty that may persist in failing to collect samples from such zones.

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Patellar Sleeve Fracture

Pediatric Orthopedic Trauma Case Atlas ◽

10.1007/978-3-319-28226-8_114-1 ◽

2017 ◽

pp. 1-5

Author(s):

Dennis Kramer

Keyword(s):

Sleeve Fracture

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Patellar Sleeve Fracture

Pediatric Orthopedic Trauma Case Atlas ◽

10.1007/978-3-319-29980-8_114 ◽

2020 ◽

pp. 653-656

Author(s):

Dennis Kramer

Keyword(s):

Sleeve Fracture

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Injuries of Children and Young People in Sports: Stress Fractures and Fracture of the Sleeve Sleeve

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967118s00053 ◽

2018 ◽

Vol 6 (6_suppl3) ◽

pp. 2325967118S0005

Author(s):

Ana Costa Pinheiro ◽

Filomena Ferreira ◽

Margarida Areias ◽

Carolina Oliveira ◽

Cristina Sousa ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Young People ◽

Avulsion Fracture ◽

Stress Fractures ◽

Overuse Injuries ◽

Resonance Imaging ◽

Children And Young People ◽

Sleeve Fracture ◽

Clinical Cases

Introduction: With the dramatic increase in the competitive sports of children and young people, overuse injuries have become more important in the pediatric population. Among these, the most frequent injuries in young athletes are stress fractures. The absence of evident traumatic history and the subtle radiographic changes can cause a diagnostic difficulty and delay the treatment. Fracture of the patella sleeve is a rare fracture only occurs in children. The diagnosis is difficult, both clinically and radiologically. High patella and hemarthrosis are important signs to diagnose this fracture. Presentation of 2 clinical cases of injuries in children and young people in sports: stress fractures and fracture of the patella sleeve. Methods: Retrospective descriptive method with reports of clinical cases based on patients’ electronic clinical processes. Results: We present a case of a child, a 13-year-old soccer practitioner who had mentioned well localized pain in the anterior aspect of the right leg with 5 days of evolution and analgesic gait and no history of trauma. The radiographs and CT showed a juxtaposed cortical lesion with apparent contact with the cortical bone without associated periosteal reaction. NMR confirmed stress fracture of the proximal tibial shaft. It was treated conservatively with immobilization with plaster and discharge. We present the case of an 11-year-old boy who suffered a fracture of the patella sleeve. In the imaging study, a fragment of bone with a displacement from the lower pole of the patella was visible. An open fracture reduction was performed. During the surgery confirmed avulsion fracture of a small osteochondral fragment, configuration of a sleeve-like fracture. The amount of cartilage was small, so it was decided to reinsert the 2 anchorages for patellar tendon. After fracture healing and rehabilitation, both returned to sports activity without sequelae or functional limitations. Discussion/Conclusion: A knowledge of the fracture of the patella sleeve, together with its clinical and radiological features, is important to avoid misdiagnosis and treatment delay. Care should be taken not to disturb the proximal tibial process. Although relatively uncommon in the pediatric age, the incidence of fractures described stress have been increasing in this age group. A high degree of suspicion is required to make the diagnosis and avoid too invasive treatment. REFERENCES Ray JM, Hendrix J. Incidence, mechanism of injury, and treatment of fractures of the patella in children. J Trauma 1992;32:464–7. Bates DG, Hresko MT, Jaramillo D. Patellar sleeve fracture: demonstration with MR imaging. Radiology 1994;193:825–7. Wu CD, Huang SC, Liu TK. Sleeve fracture of the patella in children. A report of five cases. Am J Sports Med 1991;19:525– 8. Houghton GR, Ackroyd CE. Sleeve fractures of the patella in children: a report of three cases. J Bone Joint Surg Br 1979;61:165–8. Shands PA, McQueen DA. Demonstration of avulsion fracture of the inferior pole of the patella by magnetic resonance imaging. A case report. J Bone Joint Surg Am 1995;77:1721–3. Dai LY, Zhang WM. Fractures of the patella in children. Knee Surg Sports Traumatol Arthrosc 1999;7:243–5. Fredericson M, Bergman G, Hoffman KL, et al. Tibial stress reaction in runners: correlation of clinical symptoms and scintigraphy with a new magnetic resonance imaging grading system. Am J Sports Med 1995; 23: 472-81. Hunter-Griffin LY. Clinics in sports medicine: overuse injuries. Philadelphia (PA): W.B. Saunders, 1987. Jackson DW, Bailey D. Shin splints in the young athlete: a non-specific diagnosis. Phys Sports Med 1975; 3: 45-51.

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