title: Comparison of the prognosis among different age groups in elderly patients with hip fracture.
abstract: BACKGROUND
  The outcome of treatment of hip fractures in different age groups in the elderly population is largely unknown. Hence, we stratified elderly patients with hip fracture into age groups and compared the prognosis in various age groups.
  
  
  METHODS
  Among 459 patients with hip fracture treated at our hospital from 1997, 430 patients aged 65 years or above at the time of injury were studied. The patients comprised 98 males and 332 females and the ages at injury ranged from 65 to 103 years (mean 83.4 years). There were 167 cases of femoral neck fracture and 263 cases of trochanteric fractures. Surgery was performed in 383 cases, while 47 cases were treated conservatively. The subjects were classified by age into young-old for those aged 65-74 years (group A, n = 55), middle-old for those aged 75-84 years (group B, n = 172), old-old for those aged 85-94 (group C, n = 180), and oldest-old for those aged 95 years or above (group D, n = 23). The functional and survival prognosis at discharge in each group was investigated.
  
  
  RESULTS
  Numbers of patients who were ambulatory at discharge among those ambulatory before injury were 43 of 49 (87.8%) in group A, 113 of 152 (74.3%) in group B, 86 of 138 (62.3%) in group C, and 5 of 14 (35.7%) in group D, showing worse recovery of walking ability as age advanced. Among those ambulatory before injury, 42 patients in group A, 139 patients in group B, 130 patients in group C, and 12 patients in group D underwent surgery and of these patients, 38 patients (90.5%) in group A, 109 patients (78.4%) in group B, 83 patients (63.8%) in group C, and 5 patients (41.7%) in group D were ambulatory at discharge. On the other hand, the numbers of patients who were ambulatory at discharge among those receiving conservative treatment were 5 of 7 (71.4%) in group A, 4 of 13 (30.8%) in group B, 3 of 8 (37.5%) in group C, and 0 of 2 (0%) in group D, showing better walking ability in surgical patients than in conservatively treated patients even in the elderly. There were two in-hospital deaths in group B, 11 in group C, and two in group D. Five of the 15 deaths were inoperable cases due to poor performance status at admission.
  
  
  CONCLUSIONS
  Walking ability at discharge and survival prognosis worsened as age advanced. On the other hand, since surgical cases achieved better walking ability than conservatively treated cases, efforts should be made to achieve better functional prognosis even in the old-olds, including surgery together with early ambulation and rehabilitation.
authors.affiliation: Department of Orthopaedic Surgery, National Hospital Organization, Kofu National Hospital, Yamanashi, Japan. tmhagino@amber.plala.or.jp
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Hagino
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ochiai
authors.forename: Masanori
authors.initials: M
authors.lastname: Wako
authors.forename: Eiichi
authors.initials: E
authors.lastname: Sato
authors.forename: Shingo
authors.initials: S
authors.lastname: Maekawa
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Hamada