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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.