title: Partial rupture of the quadriceps muscle in a child.
abstract: BACKGROUND
  The quadriceps femoris muscle ruptures usually occur in the middle-aged population. We present a 4-year-old patient with partial rupture of the quadriceps femoris muscle. To our knowledge, this is the youngest patient reported with a quadriceps femoris muscle rupture.
  
  
  METHODS
  A 4-year-old girl admitted to our clinic with left knee pain and limitation in knee movements. Her father reported that she felt pain while jumping on sofa. There was no direct trauma to thigh or knee. We located a palpable soft tissue swelling at distal anterolateral side of thigh. The history revealed that 10 days ago the patient was treated for upper tract respiratory infection with intramuscular Clindamycin for 7 days. When we consulted the patient with her previous doctor and nurse, we learnt that multiple daily injections might be injected to same side of left thigh. MRI showed a partial tear of vastus lateralis muscle matching with the injection sites. The patient treated with long leg half-casting for three weeks. Clinical examination and knee flexion had good results with conservative treatment.
  
  
  CONCLUSIONS
  Multiple intramuscular injections may contribute to damage muscles and make prone to tears with muscle contractions. Doctors and nurses must be cautious to inject from different parts of both thighs.
authors.affiliation: Department of Pediatrics, Aksaz Military Hospital 48150, Marmaris, Mugla, Turkey. draydemir73@yahoo.com
authors.forename: Gokhan
authors.initials: G
authors.lastname: Aydemir
authors.forename: Selami
authors.initials: S
authors.lastname: Cakmak
authors.forename: Secil
authors.initials: S
authors.lastname: Aydinoz
mesh_terms: D002675:Child, Preschool; D005260:Female; D006801:Humans; D009135:Muscular Diseases / Q000150:complications / Q000209:etiology* / Q000503:physiopathology; D052097:Quadriceps Muscle / Q000293:injuries*; D012421:Rupture / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology