Unilateral referral (n = 101) | Bilateral referral (n = 79) | |||||
---|---|---|---|---|---|---|
Referred hand | Non-referred hand | P value | Left | Right | P value | |
Body structure | ||||||
Radiographic CMCJ OA severity (0–4, 0 = no CMCJ OA), median (IQR) | 3 (3,4) | – | – | 3 (3,4) | 3 (2,4) | .16 |
Presence of clinical CMCJ subluxation, n (%) | 65 (64) | – | – | 46 (58) | 38 (48) | .02 |
Radiographic CMCJ subluxation ratio, mean (SD) | 0.51 (0.10) | – | – | 0.50 (0.10) | 0.48 (0.11) | .04 |
Number of finger joints with clinical nodes (0–9 joints), median (IQR) | 0 (0,2) | 0 (0,1) | <.001 | 0 (0,2) | 0 (0,2) | NA |
Body function | ||||||
Pain at rest (0–10 scale), median (IQR) | 3 (1,5) | 0 (0,2) | <.001 | 3 (1,5) | 2 (0,4) | .11 |
Pain following measure of grip strength (0–10, 0 = no pain), median (IQR) | 4 (1,5) | 0 (0,2) | <.001 | 3 (1,4) | 2 (1,5) | .84 |
Pain following measure of pinch strength (0–10, 0 = no pain), median (IQR) | 4 (1,6) | 0 (0,2) | <.001 | 3 (2,5) | 3 (1,5) | .33 |
Max grip strength, Newton (N), median (IQR) | 159 (106,240) | 214 (150,316) | <.001 | 159 (97,234) | 177 (118,235) | .02 |
Max pinch strength, N, median (IQR) | 29 (20,40) | 37 (27,48) | <.001 | 30 (20,39) | 29 (23,43) | .40 |
Grip strength referred hand (% of normal grip strength), mean (SD) | 65 (25) | 82 (26) | <.001 | 64 (27) | 67 (29) | .33 |
Pinch strength referred hand (% of normal pinch strength), mean SD | 60 (25) | 76 (29) | <.001 | 61 (27) | 65 (27) | .10 |
Number of painful finger joints (MCPJ, IP, PIPJ, DIPJ: 0–14 joints), median (IQR) | 1 (0,4) | 1 (0,4) | NA | 2 (1,5) | 3 (1,5) | .26 |
Flexion deficit 2nd-5th fingers, mm, median (IQR) | 0 (0,0) | 0 (0,0) | .09 | 0 (0,3) | 0 (0,0) | .40 |
Range of motion thumb IP, degrees, median (IQR) | 70 (58,76) | 75 (65,80) | <.001 | 70 (62,80) | 70 (60,70) | .50 |
Range of motion MCP1, degrees, median (IQR) | 50 (42,56) | 55 (45,65) | <.001 | 50 (40,60) | 50 (42,60) | .42 |
Palmar abduction thumb, degrees, median (IQR) | 46 (40,55) | 56 (47,62) | <.001 | 50 (42,58) | 50 (42,58) | .60 |
Abduction CMCJ, degrees, median (IQR) | 36 (30,42) | 42 (34,49) | <.001 | 37 (32,44) | 39 (30,44) | .55 |