Table 3 Relation between involvement of individual MCP and PIP joints and grip force, both hands combined (% of expected)
Inclusion a | 1-year follow-up a | 5-year follow-up a | |
|---|---|---|---|
Synovitis | |||
MCP I | − 9.2 (− 13.6 to − 4.8) | − 7.5 (− 12.3 to − 2.7) | − 7.8 (− 13.6 to − 1.9) |
MCP II | − 7.4 (− 11.7 to − 3.1) | − 2.9 (− 7.8 to 2.0) | − 4.2 (− 10.2 to 1.9) |
MCP III | − 6.9 (− 11.0 to − 2.7) | − 1.4 (− 6.9 to 4.2) | − 2.1 (− 8.5 to 4.2) |
MCP IV | − 8.7 (− 15.1 to − 2.4) | − 9.1 (− 23.4 to 5.2) | − 3.5 (− 16.5 to 9.6) |
MCP V | − 6.4 (− 13.0 to 0.3) | − 4.6 (− 14.9 to 5.7) | 4.1 (− 5 − 7 to 13.9) |
PIP I | 0.6 (− 5.1 to 6.3) | − 3.9 (− 12.3 to 4.5) | − 6.9 (− 19.5 to 5.7) |
PIP II | − 2.7 (− 7.5 to 2.0) | − 5.1 (− 12.1 to 1.8) | − 6.8 (− 15.6 to 2.1) |
PIP III | − 4.9 (− 9.4 to − 0.5) | − 2.9 (− 9.2 to 3.5) | 1.0 (− 6.9 to 9.0) |
PIP IV | − 3.5 (− 8.5 to 1.5) | − 3.3 (− 10.2 to 3.6) | 3.6 (− 5.6 to 12.8) |
PIP V | − 3.7 (− 9.3 to 2.0) | − 5.0 (− 12.8 to 2.7) | − 1.8 (− 11.8 to 8.3) |
Tender joints | |||
MCP I | − 8.9 (− 13.4 to − 4.3) | − 5.9 (− 11.8 to − 0.1) | − 7.2 (− 15.5 to 1.2) |
MCP II | − 8.5 (− 13.0 to 4.0) | − 3.2 (− 9.7 to 3.2) | − 6.5 (− 15.2 to 2.2) |
MCP III | − 8.7 (− 13.9 to − 3.5) | 0.8 (− 6.8 to 8.4) | − 5.8 (− 15.1 to 3.6) |
MCP IV | − 12.1 (− 18.0 to − 6.3) | − 7.5 (− 17.1 to 2.1) | − 6.7 (− 18.9 to 5.4) |
MCP V | − − 7.6 (− 13.6 to − 1.6) | − 9.0 (− 19.6 to 1.6) | 5.8 (− 6.4 to 18.0) |
PIP I | − 5.8 (− 11.5 to − 0) | − 6.9 (− 15.4 to 1.6) | − 5.9 (− 17.2 to 5.4) |
PIP II | − 8.0 (− 13.1 to − 2.9) | − 5.4 (− 13.6 to 2.8) | − 7.6 (− 18.4 to 3.2) |
PIP III | − 9.4 (− 14.3 to − 4.5) | − 8.4 (− 15.7 to − 1.1) | − 4.0 (− 14.1 to 6.1) |
PIP IV | − 5.4 (− 10.4 to − 0.3) | − 4.0 (− 12.6 to 4.6) | − 2.3 (− 13.2 to 8.6) |
PIP V | − 7.8 (− 13.2 to − 2.4) | − 8.1 (− 17.3 to 1.1) | − 7.7 (− 18.1 to 2.8) |