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Golf has the potential to
keep people active well into their later years. Injuries to the
target side knee have been reported in golfers, yet no mechanisms
for these injuries have been proposed. The loads on the knee during
the golf swing may be insufficient to cause acute injury, yet they
may be a factor in the progression of overuse/degenerative
conditions; therefore, research developing swing modifications that
may alter loading of the knee is warranted. It has been suggested
that the proper golf set-up position has the target-side foot
externally rotated but no reasoning for this modification has been
provided. Frontal plane knee moments have been implicated in many
knee pathologies. Therefore, this study used a 3-dimensional link
segment model to quantify the frontal plane knee moments during the
golf swing in a straight (STR) and externally rotated (EXT)
target-side foot position. Subjects were 7 collegiate golfers and
knee moments were compared between conditions using repeated
measures T-tests. The golf swing knee moment magnitudes were also
descriptively compared to those reported for two athletic maneuvers
(drop jump landing, side-step cutting) and activities of daily
living (gait, stair ascent). The EXT condition decreased the peak
knee adduction moment as compared to the STR condition; however,
foot position had no effect on the peak knee abduction moment.
Also, the magnitude of the knee adduction moments during the two
activities of daily living were 9-33% smaller than those
experienced during the two different golfing conditions. The drop
jump landing and golf swing knee moments were of similar magnitude
(STR= - 5%, EXT= + 8%); however, the moments associated with side-
step cutting were 50-71% larger than those on the target side knee
during the golf swing. The loading of the target side knee during
the golf swing may be a factor in the development and progression
of knee pathologies and further research should examine ways of
attenuating these loads through exercise and swing
modifications.
http://s8/middle/4e9455f8gbdc96af92627&690PLANE KNEE MOMENTS IN GOLF: EFFECT OF TARGET SIDE FOOT POSITION AT ADDRESS" TITLE="[转载]FRONTAL PLANE KNEE MOMENTS IN GOLF: EFFECT OF TARGET SIDE FOOT POSITION AT ADDRESS" />
http://s7/middle/4e9455f8gbdc96b3bada6&690PLANE KNEE MOMENTS IN GOLF: EFFECT OF TARGET SIDE FOOT POSITION AT ADDRESS" TITLE="[转载]FRONTAL PLANE KNEE MOMENTS IN GOLF: EFFECT OF TARGET SIDE FOOT POSITION AT ADDRESS" />
| CONCLUSION |
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These data suggest that it
would be useful to teach an externally rotated front foot address
position to most aging recreational golfers as the medial
compartment is most commonly affected in knee OA cases (Felson,
1998), and therefore, decreasing the
loading of the medial compartment could help slow cartilage wear in
healthy golfers and decrease pain levels in those with medial knee
pathology. However, in those with lateral compartment disease, an
externally rotated front foot position may not be as helpful as
this set up modification did not affect the abduction moment of the
knee during the golf swing.
The magnitude of the knee varus/adduction moment during the golf
swing is larger than those experienced during other ADLs, and
therefore may have clinical implications in those with medial
compartment knee pathologies. Also, the valgus/abduction load on
the knee during the golf swing may have clinical consequences as
the magnitude of this moment is comparable to those calculated
during drop jump landing. Valgus/abduction loading of the knee
joint has also been shown to be associated with lateral compartment
cartilage wear (Lynn et al.,
2007) and stress on the ACL (Fukuda et al.,
2003). Therefore, with many swings over
several years, the golf swing may have the potential to lead to
lateral compartment degenerative changes in the knee and to
ligament attenuation of the ACL. Although golf injury data has
reported the prevalence of knee injuries in golfers (McCarroll,
1996), the exact pathologies are unclear
and this work would suggest that an examination of the prevalence
of lateral compartment cartilage and ACL related pathologies in
golfer's knees is warranted. External foot rotation at set-up did
not decrease the magnitude of this valgus/abduction load and thus,
other ways of controlling the magnitude of this moment need to be
developed.
The game of golf is as a lifelong leisure time activity that can
keep individuals active and healthy well into their older adult
years (Vandervoort,
2009). Therefore, research aimed at making
the game less harmful on the musculoskeletal system is necessary.
This study has demonstrated that the magnitudes of the frontal
plane knee loads on the target side limb during the golf swing have
potential clinical consequences for golfers and further research
examining knee mechanics during the golf swing is
needed. |
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博主注：“the target side
knee”是指前侧脚膝盖，对右手球手而言就是左膝，对左手球手而言，就是右膝。 |
加载中…
(2012-04-16 18:34:47) 