Pollock et al developed a muscle injury classification for athletes. The goal is to provide information that is useful; to athletes, trainers and physicians. The authors are from the British Athletic Medical Team, Royal Orthopaedic Hospital (Birmingham), Chelsea and Westminster Hospital (London), an Loughborough University (Loughborough) in England.
Parameters:
(1) grade of muscle injury from MRI
(2) suffix for location
Muscle Injury on MRI
Grade
no tear
0
small tears to the muscle
1
moderate tears
2
extensive tear
3
complete tear
4
Muscle Injury on
Suffix
myofascial
a
musculo-tendinous
b
intratendinous
c
Grade
Pain
Impact
1
during or after activity
range of motion maintained at 24 hours, variable pain on contraction
2
stops activity
range of motion shows some limitation at 24 hours, some pain on initiating contraction, some detectable weakness
3
sudden with significant limitation on activity
range of motion significantly reduced at 24 hours, obvious weakness, significant pain on initiating contraction
4
sudden with significant limitation on activity
palpable gap, less pain on contraction
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