Kneeling ability is different after different knee arthoplasty procedures
The ability to kneel is an important function of the knee joint required for many
of the daily activities including religious practices, professions and recreation.
Inability to kneel after knee replacement is a frequent cause for
This work attempts to investigate whether kneeling ability varies after different
knee replacement procedures. It also attempts to identify factors that may
affect kneeling ability through clinical, anatomical, histo-pathological and
Patients' perception of their post-operative ability to kneel was generally poor.
but showed improvement when compared with their pre-operative ability.
Patients with uni-compartmental replacement showed better kneeling ability
than those with either total or patello-femoral replacement. Patients' ability to
descend stairs was much better than their ability to kneel when the two
functions were compared. Patients with fixed bearing implants had a better
perceived kneeling ability than those with mobile bearing.
Patients' observed kneeling was far better than their perception. The range of
motion proved to be an important factor. Normal individuals from a similar
age group had better kneeling ability when compared with knee replacement
Patients' kneeling ability was also affected by skin sensory alteration after
knee replacement emphasising the importance of placement of surgical
incisions to avoid injury to sensory nerves. Weight transmitted through the
knee decreased with increased f1exion. Contact pressures on a force plate
dropped Significantly when ROM was at maximum. The ability to kneel after
knee replacement is important for many people. Although forces transmitted
through the knee in extreme flexion are reduced, the kinematics of the knee in
this position needs to be characterised.