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Total knee arthroplasty in bony ankylosis in gross flexion.

Abstract
Between June 1993 and December 1994, we performed total knee arthroplasty (TKA) on 27 knees in 24 patients with spontaneous bony ankylosis in severe flexion. The mean age at operation was 43.5 years (30 to 60). No patient had preoperative pain. Three were unable to walk and 21 could manage less than five blocks. The mean duration of the ankylosis was 18.7 years (13 to 25) and its mean position was 105 degree flexion (75 to 135). The preoperative Hospital for Special Surgery Knee Score of 60 points was improved to 87 at the final follow-up three to five years later. All knees were free from pain. The mean range of active flexion in 24 knees was 97 degrees (78 to 115) and the mean arc of movement 91 degrees (78 to 98). The mean fixed flexion deformity was 6 degrees (0 to 25) and the extension lag 8 degrees (0 to 25). Angular deformity was corrected to between 0 degrees and 10 degrees of valgus. Four patients were able to walk one block and 20 five to seven blocks. Thirteen knees (48%) showed some necrosis at the skin edge; one knee required arthrodesis and another resection arthroplasty. One had a recurrence of tuberculous infection requiring arthrodesis. One patient had a rupture of the quadriceps tendon. To date no prosthesis has required revision for loosening. Radiolucency of 1 mm or less about the tibial prosthesis was observed at follow-up in four of the 24 knees. Our results have shown that one-stage TKA and skeletal traction after operation can achieve correction of severe flexion deformity of the knee with marked improvement in the function and quality of life.
AuthorsY H Kim, S H Cho, J S Kim
JournalThe Journal of bone and joint surgery. British volume (J Bone Joint Surg Br) Vol. 81 Issue 2 Pg. 296-300 (Mar 1999) ISSN: 0301-620X [Print] ENGLAND
PMID10204937 (Publication Type: Journal Article)
Topics
  • Adult
  • Ankylosis (etiology, surgery)
  • Arthritis (complications)
  • Arthroplasty, Replacement
  • Female
  • Humans
  • Knee Joint (surgery)
  • Male
  • Middle Aged
  • Postoperative Complications

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