M
mACI
mACI is an abbreviation of 'matrix-induced autologous chondrocyte implantation', which means the implantation back into a patient of their own cartilage cells which have been seeded onto a matrix during laboratory processing. Page updated May 2024 by Dr Sheila Strover (Clinical Editor)
Magnetic resonance imaging
Magnetic resonance imaging is a method of imaging of the body that allows the organs to be viewed in 'slices'.
Malalignment
The word 'mal' means 'bad' or 'poor'. 'Malalignment' implies that the relationship or geometry of one bone in relation to its neighbouring bone is outside of what one might consider normal. Page updated March 2024 by Dr Sheila Strover (Clinical Editor)
Malleolus
The malleolus is the protuberance of bone on either side of the ankle. Page updated June 2024 by Dr Sheila Strover (Clinical Editor)
Maltracking
Maltracking refers to a patella which is not tracking smoothly in the groove of the underlying femur during normal knee movement. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)
Manipulation under anaesthesia
Manipulation under anaesthesia (MUA) is a procedure to improve the range of movement of a stiff joint, performed while the patient is anaesthetised to relax all the muscles.
Maquet procedure
The Maquet procedure is a surgical procedure to realign the patella (knee cap) by forwards repositioning of the attachment of its tendon.
Marfan syndrome
Marfan syndrome is a set of inherited signs and symptoms, also associated with hypermobility of the joints, including the knee.
Marrow stimulation
Marrow stimulation involves different techniques that allow bone marrow cells to enter a joint cartilage defect to enhance healing there.
MAT
MAT is an abbreviation for Meniscal Allograft Transplantation.