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NJR STRUCTURE & GOVERNANCE

ANNUAL REPORT 2020

Chairman’s Foreword 2020Introduction to Annual Report 2020Executive Summary

WELSH TRANSLATION

WORK - ANNUAL PROGRESS

Data Completeness and QualityWork of the NJR committeesDevelopments

HIPS

All Procedures - ActivityPrimary Procedures - Patient CharacteristicsPrimary Procedures - Surgical TechniquePrimary Procedures - ComponentsRevision Procedures - Patient CharacteristicsRevision Procedures - Components

KNEES

All Procedures - ActivityPrimary Procedures - Patient CharacteristicsPrimary Procedures - Surgical TechniquePrimary Procedures - ComponentsRevision Procedures - Patient Characteristics

ANKLES

All Procedures - ActivityPrimary Procedures - Patient CharacteristicsPrimary Procedures - Surgical TechniquesPrimary Procedures - ComponentsRevision Procedures

ELBOWS

Primary Procedures - ActivityPrimary Procedures - Patient CharacteristicsPrimary Procedures - Surgical TechniquesPrimary Procedures - Elbow ComponentsRevision Procedures

SHOULDERS

Primary Procedures - ActivityPrimary Procedures - Patient CharacteristicsPrimary Procedures - Surgical TechniquePrimary Procedures - Shoulder ComponentsRevision Procedures

ALL JOINTS
 

All Procedures - Activity

HOSPITAL PERFORMANCE

IMPLANT PERFORMANCE

DOWNLOADS

ARCHIVE


16th Annual Report
published Sept 2019

15th Annual Report
published Sept 2018
14th Annual Report
published Sept 2017
13th Annual Report
published Sept 2016
12th Annual Report
published Sept 2015
11th Annual Report
published Sept 2014

Patient characteristics for knee revision procedures

  • SUMMARY
  • CHART AND TABLE

The table shows the average age, gender, and physical status of patients undergoing revision knee surgery.  It also includes the indications for revision.  Please note that more than one indication for revision can be reported for each procedure.

The American Society of Anesthesiologists (ASA) classification is used for Patient Physical Status.

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Patient characteristics for knee revision procedures in 2019, according to procedure type.
 
Knee single stage revision
Knee stage one of two-stage revision
Knee stage two of two-stage revision
Knee conversion to arthrodesis
Knee amputation
Debridement and Implant Retention (DAIR)
Total
Total knee revision procedures
No.
%
No.
%
No.
%
No.
%
No.
%
No.
%
No.
%
5,301
76%
607
9%
553
8%
16
<1%
16
<1%
515
7%
7,008
 
Total with patient data
5,141
97%
578
95%
536
97%
16
100%
15
94%
495
96%
6,781
97%
Average age
70.26
 
70.34
 
69.99
 
73.71
 
67.61
 
70.93
 
70.47
 
SD
10.12
 
10.20
 
9.45
 
12.22
 
14.04
 
10.13
 
10.42
 
Interquartile range
63.25-77.32
 
63.77-78.01
 
63.21-76.80
 
67.90-82.69
 
57.11-83.02
 
64.05-77.73
 
63.01-77.66
 
Gender
       
Female
2,934
57%
238
41%
222
41%
8
50%
7
47%
209
42%
3,618
53%
Male
2,207
43%
340
59%
314
59%
8
50%
8
53%
286
58%
3,163
47%
Patient physical status
              
P1 - Fit and healthy
271
5%
13
2%
14
3%
-
0%
-
0%
11
2%
309
4%
P2 - Mild disease not incapacitating
3,294
62%
281
46%
242
44%
5
31%
4
25%
237
46%
4,063
58%
P3 - Incapacitating systemic disease
1,647
31%
282
46%
285
52%
11
69%
9
56%
236
46%
2,470
35%
P4 and P5
89
2%
31
5%
12
2%
-
0%
3
19%
31
6%
166
2%
Indication for surgery
              
Aseptic loosening
2,219
42%
55
9%
55
10%
5
31%
-
0%
6
1%
2,340
33%
Infection
271
5%
554
91%
473
86%
10
63%
12
75%
453
88%
1,773
25%
Progressive arthritis remaining knee
1,248
24%
7
1%
11
2%
-
0%
-
0%
6
1%
1,272
18%
Instability
1,027
19%
18
3%
13
2%
1
6%
-
0%
6
1%
1,065
15%
Lysis
645
12%
77
13%
41
7%
-
0%
-
0%
2
<1%
765
11%
Wear polyethylene component
675
13%
15
2%
7
1%
1
6%
-
0%
4
1%
702
10%
Unexplained pain
515
10%
7
1%
3
1%
2
13%
1
6%
11
2%
539
8%
Periprosthetic fracture
357
7%
4
1%
7
1%
1
6%
2
13%
3
1%
374
5%
Malalignment
360
7%
2
<1%
9
2%
-
0%
-
0%
1
<1%
372
5%
Stiffness
304
6%
5
1%
7
1%
1
6%
-
0%
11
2%
328
5%
Dislocation/subluxation
221
4%
8
1%
4
1%
1
6%
2
13%
6
1%
242
3%
Component dissociation
102
2%
3
<1%
2
<1%
1
6%
-
0%
1
<1%
109
2%
Implant fracture
74
1%
3
<1%
1
<1%
-
0%
-
0%
2
<1%
80
1%
Other
372
7%
10
2%
16
3%
2
13%
1
6%
29
6%
430
6%
Side
              
Bilateral
8
<1%
6
1%
1
<1%
-
0%
-
0%
2
<1%
17
<1%
Left, unilateral
2,473
47%
280
47%
239
43%
9
56%
7
44%
243
47%
3,251
46%
Right, unilateral
2,820
53%
321
53%
313
57%
7
44%
9
56%
270
53%
3,740
53%
© National Joint Registry 2020

Reporting Period

Date Range

Data to 31/12/2013

Data to 31/12/2014

Data to 31/12/2015

Data to 31/12/2016

Data to 31/12/2017

Data to 31/12/2018

Data to 31/12/2019

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