Not periosteal sleeve avulsion (as patella does not have periosteum)
Definitions
Avulsion injury of patella in skeletally immature patients
Small ossific fragment & larger sleeve of unossified "epiphyseal" cartilage are avulsed from patella at
Inferior pole by patellar tendon (more common)
Superior pole by quadriceps tendon (less common)
± articular cartilage injury
IMAGING
General Features
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Selected References
Sousa PL et al: Nonoperative management of minimally displaced patellar sleeve fractures. J Knee Surg. ePub, 2019
Bradko V et al: Two cases of combined patellar tendon avulsion from the tibia and patella. SICOT J. 4:17, 2018
Lindor RA et al: Patellar fracture with sleeve avulsion. N Engl J Med. 375(24):e49, 2016
Stepanovich MT et al: Combined tibial tubercle avulsion fracture and patellar avulsion fracture: an unusual variant in an adolescent patient. Am J Orthop (Belle Mead NJ). 45(1):E31-4, 2016
Merrow AC et al: Avulsion fractures of the pediatric knee. Pediatr Radiol. 44(11):1436-45; quiz 1433-6, 2014
Shih KS et al: Simultaneous bilateral sleeve fracture of the patellae in a preadolescent athlete. ANZ J Surg. 84(10):791-2, 2014
Malone A et al: Bilateral sleeve fractures of the patella in a 12-year-old boy with hereditary spastic paraparesis and crouch gait. BMJ Case Rep. 2013, 2013
Dwek JR: The periosteum: what is it, where is it, and what mimics it in its absence? Skeletal Radiol. 39(4):319-23, 2010
Dupuis CS et al: Injuries and conditions of the extensor mechanism of the pediatric knee. Radiographics. 29(3):877-86, 2009
Gao GX et al: Sleeve fracture of the patella in children. J Orthop Surg (Hong Kong). 16(1):43-6, 2008
Maripuri SN et al: Sleeve fracture of the superior pole of the patella with an intra-articular dislocation. A case report. J Bone Joint Surg Am. 90(2):385-9, 2008
Khanna G et al: Sleeve fracture at the superior pole of the patella. Pediatr Radiol. 37(7):720-3, 2007
Ditchfield A et al: Case reports. Ultrasound diagnosis of sleeve fracture of the patella. Clin Radiol. 55(9):721-2, 2000
Bates DG et al: Patellar sleeve fracture: demonstration with MR imaging. Radiology. 193(3):825-7, 1994
Related Anatomy
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Related Differential Diagnoses
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Synonyms
Not periosteal sleeve avulsion (as patella does not have periosteum)
Definitions
Avulsion injury of patella in skeletally immature patients
Small ossific fragment & larger sleeve of unossified "epiphyseal" cartilage are avulsed from patella at
Inferior pole by patellar tendon (more common)
Superior pole by quadriceps tendon (less common)
± articular cartilage injury
IMAGING
General Features
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Selected References
Sousa PL et al: Nonoperative management of minimally displaced patellar sleeve fractures. J Knee Surg. ePub, 2019
Bradko V et al: Two cases of combined patellar tendon avulsion from the tibia and patella. SICOT J. 4:17, 2018
Lindor RA et al: Patellar fracture with sleeve avulsion. N Engl J Med. 375(24):e49, 2016
Stepanovich MT et al: Combined tibial tubercle avulsion fracture and patellar avulsion fracture: an unusual variant in an adolescent patient. Am J Orthop (Belle Mead NJ). 45(1):E31-4, 2016
Merrow AC et al: Avulsion fractures of the pediatric knee. Pediatr Radiol. 44(11):1436-45; quiz 1433-6, 2014
Shih KS et al: Simultaneous bilateral sleeve fracture of the patellae in a preadolescent athlete. ANZ J Surg. 84(10):791-2, 2014
Malone A et al: Bilateral sleeve fractures of the patella in a 12-year-old boy with hereditary spastic paraparesis and crouch gait. BMJ Case Rep. 2013, 2013
Dwek JR: The periosteum: what is it, where is it, and what mimics it in its absence? Skeletal Radiol. 39(4):319-23, 2010
Dupuis CS et al: Injuries and conditions of the extensor mechanism of the pediatric knee. Radiographics. 29(3):877-86, 2009
Gao GX et al: Sleeve fracture of the patella in children. J Orthop Surg (Hong Kong). 16(1):43-6, 2008
Maripuri SN et al: Sleeve fracture of the superior pole of the patella with an intra-articular dislocation. A case report. J Bone Joint Surg Am. 90(2):385-9, 2008
Khanna G et al: Sleeve fracture at the superior pole of the patella. Pediatr Radiol. 37(7):720-3, 2007
Ditchfield A et al: Case reports. Ultrasound diagnosis of sleeve fracture of the patella. Clin Radiol. 55(9):721-2, 2000
Bates DG et al: Patellar sleeve fracture: demonstration with MR imaging. Radiology. 193(3):825-7, 1994
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