Hallux (Big Toe) Limitus & Rigidus Series
Part 5B – 1st Ray Cutout and 1st Met Cutout
Now we will look at the 4 parts of the First Ray structure, then see which modification is better for Hallux Limitus and Rigidus.
1. First Metatarsal Bone:
– The longest and largest metatarsal in the foot
– Primary weight-bearing bone in the forefoot, with a central role in push-off during the gait cycle
2. First Cuneiform Bone:
-One of three cuneiform bones on the medial side of the foot
– It forms a joint with the first metatarsal, called the first metatarsocuneiform joint which allows for slight dorsiflexion and plantarflexion of the First Ray
– The first cuneiform also articulates (connects) with the navicular bone, contributing to the overall stability and flexibility of the medial arch
3. First Metatarsophalangeal (MTP) Joint:
– Where the first metatarsal meets the proximal phalanx of the big toe (hallux).
– A hinge joint that allows flexion and extension during walking and a key role in the propulsive phase of gait
– Hallux Rigidus or Hallux Limitus can occur when there is limited motion at the first MTP joint due to degenerative arthritis, inflammation, or joint deformity
4. Ligaments and Tendons Involved in the First Ray:
– Plantar (bottom of foot) ligaments (such as the plantar metatarsocuneiform ligament) help stabilize the joint.
– Flexor tendons (like the flexor hallucis longus) aid in plantarflexion of the big toe during toe-off
– Extensor tendons (particularly the extensor hallucis longus) allow for dorsiflexion of the big toe (this is essential for proper gait mechanics)
– Medial and lateral collateral ligaments of the first MTP joint help stabilize the joint during movement
Now that we know modifications and the First Ray structure, which modification is better for Hallux Limitus or Hallux Rigidus?
-1st Met Cutout is generally the better choice for Hallux Limitus or Hallux Rigidus because it directly offloads the first metatarsal and first MTP joint, addressing the issue of pain and limited dorsiflexion.
-1st Ray Cutout might also be helpful in cases where First Ray instability or excessive pronation is contributing to the condition. Therefore, this would be more suitable if there are other problems in the surrounding areas like First Ray dysfunction or hypermobility since it covers a broader area.
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