title: [Minimally invasive technique treatment of postoperative recurrent bone cysts in juvenile patients].
abstract: OBJECTIVE
  To study the effect of minimally invasive treatment of postoperative recurrent bone cysts in juvenile patients.
  
  
  METHODS
  From December 1984 to December 2003, 36 cases of postoperative recurrent bone cysts after focal curettage and bone graft included 19 males and 17 females, aging 9-21 years with an average of 15 years. The size of bone cyst ranged from 2.5 cm x 6.0 cm to 3.5 cm x 13.0 cm with an average of 3.0 cm x 8.0 cm. The locations were proximal humerus in 18 cases, humeral shaft in 10 and femoral trochanteric region in 8. The focal curette and bone graft were given once in 23 cases, twice in 10 cases and 3 times in 3 cases. The interval between recurrence and minimally invasive treatment was 5-13 months (6.5 months on average). The posteroanterior and lateral X-ray films were taken to determine the location, range and feature of the focus. Under local anesthesia, 2 canulated needles were used; one was used to aspirate the contents of the cyst, the other was used to inject hydrocortisone acetate. The dose was determined according to the range of the focus. The treatment was repeated every 3. 5-4 months until the focus healed.
  
  
  RESULTS
  All patients were followed up from 3 to 18 years with an average of 5 years. The minimally invasive treatment was repeated 3-11 times with an average of 6 times. Twenty-six cases healed completely, 6 cases healed significantly, and 4 cases healed partially. No local or general complications occurred during the treatment.
  
  
  CONCLUSIONS
  This minimally invasive method for the treatment of postoperative recurrent bone cyst in juvenile patients has following advantages : less pain, easy manipulation, no hospitalization, low cost and definite effect.
authors.affiliation: Orthopaedic Department, General Hospital of Chinese PLA, Beijing 100853, P R China.
authors.forename: Yutian
authors.initials: Y
authors.lastname: Liang
authors.forename: Yizhu
authors.initials: Y
authors.lastname: Guo
authors.forename: Sheng
authors.initials: S
authors.lastname: Tao
mesh_terms: D000293:Adolescent; D000328:Adult; D001845:Bone Cysts / Q000473:pathology / Q000601:surgery*; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*; D019152:Paracentesis / Q000379:methods*; D012008:Recurrence; D016896:Treatment Outcome; D055815:Young Adult