Bookmarks
KEY FACTS
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
TERMINOLOGY
Synonyms
- Kneecap fracture
Definitions
- Patella fracture ± extensor mechanism disruption
- Extensor mechanism: quadriceps tendon, patella, and patellar tendon
- Also includes medial and lateral retinacula, patellofemoral ligaments
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Nuclear Medicine Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
- Lombardo DJ et al: Periprosthetic fractures about total knee arthroplasty. Musculoskelet Surg. 104(2):135-43, 2020
- Putman S et al: Patellar complications after total knee arthroplasty. Orthop Traumatol Surg Res. 105(1S):S43-S51, 2019
- Maloney E et al: The pediatric patella: normal development, anatomical variants and malformations, stability, imaging, and injury patterns. Semin Musculoskelet Radiol. 22(1):81-94, 2018
- Sanal HT et al: Imaging following fractures of and around the knee. Semin Musculoskelet Radiol. 22(4):457-63, 2018
- Jarraya M et al: Imaging of patellar fractures. Insights Imaging. 8(1):49-57, 2017
- Della Rocca GJ: Displaced patella fractures. J Knee Surg. 26(5):293-9, 2013
- Lazaro LE et al: Effect of computerized tomography on classification and treatment plan for patellar fractures. J Orthop Trauma. 27(6):336-44, 2013
- Lee BJ et al: Adolescent patellar osteochondral fracture following patellar dislocation. Knee Surg Sports Traumatol Arthrosc. 21(8):1856-61, 2013
- Dy CJ et al: Meta-analysis of re-operation, nonunion, and infection after open reduction and internal fixation of patella fractures. J Trauma Acute Care Surg. 73(4):928-32, 2012
- Dupuis CS et al: Injuries and conditions of the extensor mechanism of the pediatric knee. Radiographics. 29(3):877-86, 2009
- Sheth NP et al: Periprosthetic patellar fractures. J Bone Joint Surg Am. 89(10):2285-96, 2007
- Drabicki RR et al: Stress fractures around the knee. Clin Sports Med. 25(1):105-15, ix, 2006
- Gupta RR et al: Patellar sleeve fractures in children: a case report and review of the literature. Am J Orthop. 35(7):336-8, 2006
- Tay GH et al: Indirect patella fractures following ACL reconstruction: a review. Acta Orthop. 77(3):494-500, 2006
- Chun KA, et al: Patellar fractures after total knee replacement. AJR Am J Roentgenol. 185(3):655-60, 2005
- Hunt DM et al: A review of sleeve fractures of the patella in children. Knee. 12(1):3-7, 2005
- Mayers LB et al: Acute transverse patellar fracture associated with weightlifting. Case report and literature review. Am J Sports Med. 29(2):232-3, 2001
- Carpenter JE et al: Fractures of the patella. Instr Course Lect. 43:97-108, 1994
- Sonin AH: Magnetic resonance imaging of the extensor mechanism. Magn Reson Imaging Clin N Am. 2(3):401-11, 1994
- Yu JS et al: MR imaging of injuries of the extensor mechanism of the knee. Radiographics. 14(3):541-51, 1994
- Salerno DJ: Fractures of the patella: closed and open repair versus patellectomy. J Am Osteopath Assoc. 74(6):538-41, 1975
Related Anatomy
Loading...
Related Differential Diagnoses
Loading...
References
Tables
Tables
KEY FACTS
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
TERMINOLOGY
Synonyms
- Kneecap fracture
Definitions
- Patella fracture ± extensor mechanism disruption
- Extensor mechanism: quadriceps tendon, patella, and patellar tendon
- Also includes medial and lateral retinacula, patellofemoral ligaments
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Nuclear Medicine Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
- Lombardo DJ et al: Periprosthetic fractures about total knee arthroplasty. Musculoskelet Surg. 104(2):135-43, 2020
- Putman S et al: Patellar complications after total knee arthroplasty. Orthop Traumatol Surg Res. 105(1S):S43-S51, 2019
- Maloney E et al: The pediatric patella: normal development, anatomical variants and malformations, stability, imaging, and injury patterns. Semin Musculoskelet Radiol. 22(1):81-94, 2018
- Sanal HT et al: Imaging following fractures of and around the knee. Semin Musculoskelet Radiol. 22(4):457-63, 2018
- Jarraya M et al: Imaging of patellar fractures. Insights Imaging. 8(1):49-57, 2017
- Della Rocca GJ: Displaced patella fractures. J Knee Surg. 26(5):293-9, 2013
- Lazaro LE et al: Effect of computerized tomography on classification and treatment plan for patellar fractures. J Orthop Trauma. 27(6):336-44, 2013
- Lee BJ et al: Adolescent patellar osteochondral fracture following patellar dislocation. Knee Surg Sports Traumatol Arthrosc. 21(8):1856-61, 2013
- Dy CJ et al: Meta-analysis of re-operation, nonunion, and infection after open reduction and internal fixation of patella fractures. J Trauma Acute Care Surg. 73(4):928-32, 2012
- Dupuis CS et al: Injuries and conditions of the extensor mechanism of the pediatric knee. Radiographics. 29(3):877-86, 2009
- Sheth NP et al: Periprosthetic patellar fractures. J Bone Joint Surg Am. 89(10):2285-96, 2007
- Drabicki RR et al: Stress fractures around the knee. Clin Sports Med. 25(1):105-15, ix, 2006
- Gupta RR et al: Patellar sleeve fractures in children: a case report and review of the literature. Am J Orthop. 35(7):336-8, 2006
- Tay GH et al: Indirect patella fractures following ACL reconstruction: a review. Acta Orthop. 77(3):494-500, 2006
- Chun KA, et al: Patellar fractures after total knee replacement. AJR Am J Roentgenol. 185(3):655-60, 2005
- Hunt DM et al: A review of sleeve fractures of the patella in children. Knee. 12(1):3-7, 2005
- Mayers LB et al: Acute transverse patellar fracture associated with weightlifting. Case report and literature review. Am J Sports Med. 29(2):232-3, 2001
- Carpenter JE et al: Fractures of the patella. Instr Course Lect. 43:97-108, 1994
- Sonin AH: Magnetic resonance imaging of the extensor mechanism. Magn Reson Imaging Clin N Am. 2(3):401-11, 1994
- Yu JS et al: MR imaging of injuries of the extensor mechanism of the knee. Radiographics. 14(3):541-51, 1994
- Salerno DJ: Fractures of the patella: closed and open repair versus patellectomy. J Am Osteopath Assoc. 74(6):538-41, 1975
