Skip to main content

Table 2 Summary of studies evaluating pinch grip

From: Power grip, pinch grip, manual muscle testing or thenar atrophy – which should be assessed as a motor outcome after carpal tunnel decompression? A systematic review

Reference Instrument Unit of measurement Protocol Position Key Pinch Tip Pinch Tripod Pinch
Agee et al., 1992 [9] NR %2 NR NR  
Brown et al., 1993 [10] JAMAR lb3 NR NR   
Brüser et al., 1994 [18] B % NR NR  
Dias et al., 2004 [29] JAMAR kg NR NR    
Erdmann, 1994 [11] JAMAR lb NR NR Not specified   
Ferdinand & Maclean, 2002 [22] B&L NR NR NR   
Foulkes et al., 1994 [12] B&L lb NR NR
MacDermid et al., 2003 [24] pinch device NK1 kg NR3 NR3  
Mackenzie et al., 2000 [19] B&L kg NR NR   
Mackinnon et al., 1991 [8] NR NR NR NR Not specified   
Nakamichi & Tachibana 1997 [17] NR kg NR NR   
Sennwald & Benedetti, 1995 [13] B&L lb NR NR   
Trumble et al., 2002 [20] pinch meter2 kg NR NR  
Wong et al., 2003 [27] NR % NR NR Not specified   
Total      10 4 3
  1. % = percent change from preoperative value
  2. NR = not reported
  3. lb = pounds
  4. kg = kilograms
  5. B&L pinch gauge (B&L Engineering, Santa Fe, CA)
  6. 1NK Biotechnical Xorp, Minneapolis, MN
  7. 2Therapeutic instruments, Clifton, New Jersey
  8. 3 Reference to reliability studies provided.