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Wheeless' Textbook of Orthopaedics

Wheeless' Textbook of Orthopaedics

C.R. Wheeless MD

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Wheeless' Textbook of Orthopaedics


A comparison of primary and revision total knee arthroplasty using the

kinematic stabilizer prosthesis.

Hanssen-AD; Rand-JA

Department of Orthopedics, Mayo Clinic, Rochester, Minnesota 55905.

J-Bone-Joint-Surg-Am. 1988 Apr; 70(4): 491-9

The first 121 arthroplasties (in 105 patients) in which the cemented

kinematic-stabilizer total knee prosthesis was used for primary

arthroplasty or surgical revision at the Mayo Clinic were reviewed.

Sixty-six patients (seventy-nine arthroplasties) were followed for a mean

of thirty-seven months. There were fifty-three revision and twenty-six

primary arthroplasties. The average range of motion in both groups

increased from 95 to 101 degrees. Although none of these patients could

ascend stairs without support before the operation, thirty-two (51 per

cent) could do so at the time of the final follow-up. The incidence of

moderate or severe pain was reduced from 86 to 6 per cent. Moderate or

severe ligamentous instability had been present in thirty-three knees (42

per cent) preoperatively, but only five knees had significant medial,

lateral, anterior, or posterior instability at final follow-up. The

Hospital for Special Surgery knee score increased from an average of 56

points to 83 points in all of the knees. At follow-up, the patients who

had had primary arthroplasty had 92 per cent good or excellent results and

the patients who had had surgical revision had 81 per cent good or

excellent results (p less than 0.05). There was no significant difference

in the results between the patients who had osteoarthritis and those who

had rheumatoid arthritis. Over-all, 85 per cent of the results were good

or excellent at final follow-up. Tibial radiolucent lines of one to two

millimeters were observed in 29 per cent of the knees at

follow-up.(ABSTRACT TRUNCATED AT 250 WORDS)



A comparison of primary and revision total knee arthroplasty using the

kinematic stabilizer prosthesis.

Hanssen-AD; Rand-JA

Department of Orthopedics, Mayo Clinic, Rochester, Minnesota 55905.

J-Bone-Joint-Surg-Am. 1988 Apr; 70(4): 491-9

The first 121 arthroplasties (in 105 patients) in which the cemented

kinematic-stabilizer total knee prosthesis was used for primary

arthroplasty or surgical revision at the Mayo Clinic were reviewed.

Sixty-six patients (seventy-nine arthroplasties) were followed for a mean

of thirty-seven months. There were fifty-three revision and twenty-six

primary arthroplasties. The average range of motion in both groups

increased from 95 to 101 degrees. Although none of these patients could

ascend stairs without support before the operation, thirty-two (51 per

cent) could do so at the time of the final follow-up. The incidence of

moderate or severe pain was reduced from 86 to 6 per cent. Moderate or

severe ligamentous instability had been present in thirty-three knees (42

per cent) preoperatively, but only five knees had significant medial,

lateral, anterior, or posterior instability at final follow-up. The

Hospital for Special Surgery knee score increased from an average of 56

points to 83 points in all of the knees. At follow-up, the patients who

had had primary arthroplasty had 92 per cent good or excellent results and

the patients who had had surgical revision had 81 per cent good or

excellent results (p less than 0.05). There was no significant difference

in the results between the patients who had osteoarthritis and those who

had rheumatoid arthritis. Over-all, 85 per cent of the results were good

or excellent at final follow-up. Tibial radiolucent lines of one to two

millimeters were observed in 29 per cent of the knees at

follow-up.(ABSTRACT TRUNCATED AT 250 WORDS)

 
 
 
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