Ankle (4) Elbow (10) Finger (3) Hip (140) Knee (116) Not applicable (4) Shoulder (25) Wrist (3)

Ankle arthroplasty (1) Ankle arthroplasty: Total (4) Ankle arthroplasy (3) Elbow arthroplasty (9) Elbow arthroplasty: Radial head (3) Elbow arthroplasty: Radiocapitellar (1) Elbow arthroplasty: Total (3) Finger arthroplasty (3) Hip arthroplasty (139) Hip arthroplasty: Hemi (10) Hip arthroplasty: Resurfacing (2) Hip arthroplasty: Revision (3) Hip arthroplasty: Total (88) Knee arthroplast (1) Knee arthroplasty (112) Knee arthroplasty: Patellofemoral (2) Knee arthroplasty: Revision (2) Knee arthroplasty: Total (63) Knee arthroplasty: Unicondylair (1) Knee arthroplasty: Unicondylar (24) Not applicable (4) Shoulder arthropalsty: Reversed (1) Shoulder arthroplasty (25) Shoulder arthroplasty: Hemi (2) Shoulder arthroplasty: Reversed (1) Shoulder arthroplasty: Total (4) Shoulder arthroplasty: Total: Anatomical (9) Shoulder arthroplasty: Total: Reversed (7) Wrist arthroplasty (3)

Acetabular liner (1) Acetabular liner: constrained (1) Acetabulum component (10) Age (15) Age: <18 years (1) Age: elderly (3) Age: young (5) Antibiotics (8) Antibiotics: dual loaded bone cement (3) Antibiotics: policy (1) Antibiotics: prophylaxis (2) Anticoagulant use (1) Arthrofibrosis (1) Arthroplasty register (1) Articulation (5) Articulation: ceramic-on-ceramic (2) Articulation: ceramic-on-polyethylene (1) Articulation: metal-on-metal (3) ASA classification (1) Bearing type (3) Benefits (1) Benzodiazepine use (5) Best worst scaling experiment (1) Bilaterality (1) Bioactive coating (1) BMI (6) BMI: obesity (2) Bone cement (5) Bone cement: antibiotic loaded (5) Bone-implant surface (1) Competing risk model (1) Completeness (2) Conversion to total (3) Costs (1) COVID-19 (3) Cryo- and compression therapy (3) Cup (10) Cup: dual mobility (8) Cup: migration (1) CUSUMs (1) DAIR (1) Database comparison (1) Database linkage (9) Delphi study (1) Depression (1) Diagnosis (15) Diagnosis: fracture (4) Diagnosis: late posttraumatic (1) Diagnosis: osteoarthritis (1) Diagnosis: osteonecrosis (1) Diagnosis: periprothetic fracture (1) Diagnosis: Perthes and dysplasia (1) Disability pension (1) early switch in antibiotica protocol (1) Femoral component (10) Femoral head (4) Femoral head size (3) Femoral head: bipolar (1) Femoral stem design (7) Femoral stem design: short-stemmed (3) Femoral stem design: size (1) Femoral stem length (1) Femoral stem size (1) Femoral stem size: 13 (1) Fixation (12) Fracture; osteotomy (1) Friday the 13th (1) Glenohumeral radial mismatch (1) Glenoid baseplate augmentation (1) Glenoid baseplate augmentation: biological (1) Glenoid baseplate augmentation: metal (1) Glenoid component type (1) Hospital variation (2) Hospital volume (5) Humeral component (1) Humeral stem design (1) Humeral stem design: modularity (1) Implant choice (3) Implant classification (1) Insert (2) Insert thickness (1) Insert: design (1) Insert: thickness (1) Intra operative fluoroscopy (1) Learning curve (2) Liner stability ratio (1) Machine learning (2) Manufacturer (3) Manufacturer: availability (1) Manufacturer: mixed (1) Medication use (1) Medication use: antidepressant (1) Megaprosthesis reconstruction (1) Mental, social and pathophysiological factors (1) Methodology (30) Methodology; prediction model validation (1) Methodology: target trial emulation (1) Microbiology (1) Microplasty instrumentation (1) Mortality (2) Multiple joint arthroplasties (1) Navigation (1) Nested RCT (4) New prosthesis design (1) New technology (1) NOV advise (1) NOV classification (1) Onlay vs inlay shoulder system (1) Opioid use (10) Osteotomy (1) Outcome information (1) Outlier procedure (1) Oxford Hip Score (1) Oxford Knee Score (1) Pain (1) Patellar resurfacing (3) Patellofemoral knee arthroplasty (1) Patient characteristics (25) Patient specific instrumentation (3) Polyethylene (1) Polyethylene: highly crosslinked (1) Previous surgery (5) Previous surgery: Osteosynthesis (1) Previous surgery: osteotomy (2) Previous surgery: periprothetic fracture (1) Procedure characteristics (22) PROMs (15) PROMs: implementation (2) PROMs: minimal important difference (2) PROMs: preoperative (5) PROMs: PROMIS (2) PROMs: PROMIS: CAT (2) PROMs: response (1) PROMs: satisfaction (1) Prosthesis characteristics (2) Quality of care (4) Radial head arthroplasty (1) Reason for revision (1) Registry description (1) Regression discontinuity methods (1) Revision (5) Revision components (1) Robot assisted surgery (6) RSA tested (2) Shoulder arthroplasty (1) Smoking (1) Social and pathophysiological factors (1) Socioeconomic status (4) Stability (2) Stability: posterior stabilized vs. cruciate retaining (2) Surgical approach (19) Surgical approach: anterior approach (1) Surgical approach: direct anterior approach (1) Surgical approach: direct superior approach (2) Surgical case volume (1) Surgical instrument sets (1) Target trial emulation (1) Technology assisted surgery (1) Trends (3) Type of hospital (1) Type of prosthesis (6) Ulna (1) Ulnar stem length (1) Unicondylar side (1) Validation (2)

Carbon footprint (1) Complications (2) Conversion to total hip arthroplasty (1) Data quality (1) Definition of poor response (3) Descriptive (22) Feasibility (1) Immortal time bias (1) Implant choice (2) Implant library (1) Infection (1) International comparison (22) Mortality (15) Overview (2) Prediction model (3) Prevalence (1) PROMs (45) PROMs: minimal important difference (1) PROMs: quality of life (EQ-5D) (3) PROMs: response (2) Quality of care (2) Re-revision (21) Re-revision for dislocation (1) Re-revision for infection (1) Reasons for revision (1) Recovery trajectories (1) Revision (148) Revision for aseptic loosening (7) Revision for aseptic loosening: Glenoid (1) Revision for aseptic loosening: Tibia (2) Revision for dislocation (3) Revision for infection (6) Revision for liner wear (1) Revision for malalignment (1) Revision: cup (4) Revision: Glenoid (1) Revision: stem (1) Travel distance (1) Trend (7) Validation (4)

Ackerman, I (1) Bloemheuvel, E (4) Bohm, ER (1) Bolder, S (1) Bongers, J (1) Boonen, B (1) Bos, PK (1) Boymans, T (1) Braaksma, C (2) Broeke, R ten (1) Brouwer, RW (6) Buijze, GA (1) Callary, S (1) Combescure, C (1) de Boer, F.A. (1) de Steiger, RN (1) de Witte, PB (5) Denissen, GAW (3) Doornberg, JN (2) Eygendaal, D (4) Farey, J (1) Fiocco, M (2) Furnes, O (3) Gademan MGJ (1) Gademan, MGJ (14) Goosen, J (1) Gosens, T (1) Groenwold, R (1) Hannink, G (2) Haverkamp, D (1) Heijnens, L (1) Hermus, J (1) Hosman, A (1) Huitema, G (1) Huizinga, MR (2) Inglesrud, L (2) Janssen, R (1) Jayasinghe, R (2) Jelsma, J (1) Kerkhoffs, GMMJ (1) Keuter, X (2) Koëter, S (2) Kooistra, BW (1) Kruijff, S (1) Lambers Heerspink, O (2) Lewis, P (1) Lingsma, HF (1) Lübbeke, A (1) Marang-van de Mheen, PJ (3) Moerman, S (1) Morrenhof, JW (1) Most, J (5) Nagels, J (1) Nelissen RGHH (1) Nelissen, RGHH (18) Nolte, P (6) Pasma, J (1) Peters, RM (2) Pijls, BG (2) Poolman, RW (10) Prkic, A (2) Quispel, C (2) Reijman, M (1) Rietbergen, L (1) Rolfson, O (2) Rutgers, M (1) Schipper, I (1) Schotanus, M (2) Schreurs, W (13) Six, WR (2) Smulders, K (4) Spekenbrink, A (2) Stojanov, T (1) Swierstra, BA (2) The, B (2) Vakalopoulos, K.A. (1) van den Bekerom, M (1) van den Bekerom, MPJ (4) van der Linde, JA (2) van der Pas, S (2) van der Wal, B (1) van der Wal, RJP (1) van der Weegen, W (1) van Donkelaar, IC (1) van Egmond, J (1) van Egmond, PW (1) van Geenen, R (7) van Hemert, JW (2) van Jonbergen, HPW (1) van Laarhoven, SN (1) van Noort, A (2) van Oldenrijk, J (1) van Raaij, TM (1) van Rensch, PJH (1) van Schie, P (1) van Steenbergen, LN (3) van Susante, J (2) Veen, EJ (3) Vehmeijer, SBW (3) Veltman, ES (2) Verhaar, JAN (2) Verra, WC (1) Wolterbeek, N (2) Zijlstra, WP (22) Zuiderbaan, HA (6)

Approved (13) Ongoing (57) Published (170)