The results of cementless Zweymüller hip system: 5 to 11 years follow-up study / 中华外科杂志
Chinese Journal of Surgery
;
(12): 1020-1023, 2009.
Article
in Chinese
| WPRIM
| ID: wpr-299739
ABSTRACT
<p><b>OBJECTIVE</b>To analyze the intermediate-term results associated with the use of Zweymtiller hip system.</p><p><b>METHODS</b>Review the 116 cases (142 hips) who were treated with total hip replacement from 1996 to 2002 by a single surgeon using cementless Zweymüller hip systems.</p><p><b>RESULTS</b>Sixty-one cases (77 hips) were followed up, 50 cases (64 hips) were evaluated both clinically and radiographically while 5 cases (6 hips) and 6 cases (7 hips) were only evaluated clinically and radiographically respectively. The average follow-up period was 7.3 years (range 5 to 11 years). The mean preoperative Harris Hip Score was 46 while the mean postoperative Harris Hip Score was 93. Distal cortical hypertrophy and medullary sclerosis were observed in 30 hips (42.3%) and 33 hips (46.5%) respectively. Heterotopic ossification arose in 45 hips (63.4%). Radiolucent lines occurred in 27 stems (38.0%) but in no cups. Radiolucent lines were mostly observed in Gruen zones 1. Osteolysis occurred in 7 cups (9.9%) and 18 stems (25.4%). Osteolysis was mostly observed in Delee Zone 3 and Gruen zone 7. In the distal Gruen zones 3, 4 and 5, no radiolucent line or osteolysis was observed. No hips had been revised, 3 cups needed revision surgery because of aseptic loosening.</p><p><b>CONCLUSION</b>The 5-11 years follow-up results are satisfactory, but osteolysis is common.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Follow-Up Studies
/
Treatment Outcome
/
Arthroplasty, Replacement, Hip
/
Hip Prosthesis
Type of study:
Observational study
/
Prognostic study
/
Risk factors
Limits:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Surgery
Year:
2009
Type:
Article
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