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NJR STRUCTURE & GOVERNANCE

ANNUAL REPORT 2021

Chairman’s Foreword 2021Introduction to Annual Report 2021Executive 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

COVID-19 SPECIAL REPORT

ARCHIVE


17th Annual Report
published Sept 2020

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 2020, 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.
%
2,841
70%
449
11%
374
9%
11
<1%
13
<1%
361
9%
4,049
 
Total with patient data
2,745
97%
433
96%
364
97%
11
100%
11
85%
343
95%
3,907
96%
Average age
70.93
 
70.71
 
69.92
 
75.59
 
68.06
 
73.31
 
71.42
 
SD
10.51
 
9.92
 
9.77
 
8.81
 
14.35
 
10.44
 
10.64
 
Interquartile range
63.73-78.19
 
64.18-77.86
 
63.10-77.01
 
71.87-83.08
 
68.50-75.85
 
66.05-80.94
 
63.91-79.04
 
Gender
       
Female
1,573
57%
179
41%
141
39%
4
36%
5
45%
140
41%
2,042
52%
Male
1,172
43%
254
59%
223
61%
7
64%
6
55%
203
59%
1,865
48%
Patient physical status
              
P1 - Fit and healthy
134
5%
15
3%
8
2%
-
0%
-
0%
9
2%
166
4%
P2 - Mild disease not incapacitating
1,685
59%
178
40%
199
53%
1
9%
2
15%
140
39%
2,205
54%
P3 - Incapacitating systemic disease
965
34%
215
48%
163
44%
9
82%
8
62%
186
52%
1,546
38%
P4 and P5
57
2%
41
9%
4
1%
1
9%
3
23%
26
7%
132
3%
Indication for surgery
              
Aseptic loosening
1,267
45%
55
12%
33
9%
-
0%
-
0%
4
1%
1,359
34%
Infection
179
6%
409
91%
323
86%
8
73%
12
92%
331
92%
1,262
31%
Progressive arthritis remaining knee
606
21%
3
1%
9
2%
-
0%
-
0%
1
<1%
619
15%
Instability
531
19%
11
2%
7
2%
1
9%
1
8%
2
1%
553
14%
Lysis
395
14%
41
9%
12
3%
-
0%
1
8%
-
0%
449
11%
Wear polyethylene component
387
14%
5
1%
5
1%
-
0%
-
0%
5
1%
402
10%
Periprosthetic fracture
269
9%
4
1%
8
2%
1
9%
1
8%
2
1%
285
7%
Unexplained pain
198
7%
4
1%
4
1%
-
0%
2
15%
5
1%
213
5%
Malalignment
158
6%
2
<1%
1
<1%
-
0%
-
0%
1
<1%
162
4%
Stiffness
148
5%
3
1%
6
2%
-
0%
-
0%
3
1%
160
4%
Dislocation/subluxation
149
5%
4
1%
2
1%
1
9%
-
0%
1
<1%
157
4%
Component dissociation
72
3%
4
1%
-
0%
-
0%
-
0%
-
0%
76
2%
Implant fracture
53
2%
1
<1%
2
1%
-
0%
-
0%
-
0%
56
1%
Other
184
6%
4
1%
13
3%
1
9%
-
0%
17
5%
219
5%
Side
              
Bilateral
4
<1%
-
0%
4
1%
-
0%
-
0%
-
0%
8
<1%
Left, unilateral
1,341
47%
209
47%
163
44%
2
18%
7
54%
171
47%
1,893
47%
Right, unilateral
1,496
53%
240
53%
207
56%
9
82%
6
46%
190
53%
2,148
53%
© National Joint Registry 2021

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

Data to 31/12/2020

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