How can we help?

You can also find more resources in our Help Center.

convex/concave joints

osteokinematic and arthrokinematic joint motions
STUDY
PLAY
sternoclavicular
elevation/depression --
convex: clavicle
concave: sternum
[opposite direction]

protraction/retraction --
convex: sternum
concave: clavicle
[same direction]
acromioclavicular
convex: clavicle
concave: acromion
[opposite direction]
glenohumeral
convex: humerus
concave: glenoid
[opposite direction]
ulnohumeral
convex: humerus
concave: ulna
[same direction]
radiohumeral
convex: humerus
concave: radius
[same direction]
proximal radioulnar (similar to proximal tibiofibular)
convex: radius
concave: ulna
[opposite direction]
distal radioulnar (similar to distal tibiofibular)
convex: ulna
concave: radius
[same direction]
radiocarpal
convex: carpals
concave: radius
[opposite direction]
metacarpophalangeal joints, digits 2-5
convex: metacarpals
concave: phalanges
[same direction]
prox and distal IP joints of digits 2-5
convex: the more proximal phalange
concave: the more distal phalange
[same direction]
hip
convex: femur
concave: acetabulum
[opposite direction]
tibiofemoral
convex: femur
concave: tibia
[same direction]
patellofemoral
convex: patella
concave: femur
[opposite direction]
proximal tibiofibular (similar to proximal radioulnar)
convex: tibia
concave: fibula
[same direction]
distal tibiofibular (similar to distal radioulnar)
convex: fibula
concave: tibia
[opposite direction]
talocrural
convex: talus
concave: tibia/fibula
[opposite direction]
subtalar
(anterior and middle sections)
convex: talus
convex: calcaneus
[same direction]

(posterior sections) -- where calcaneus is rounded
convex: calcaneus
concave: talus
[opposite direction]
midtarsal
convex: the more medial tarsal
concave: the more lateral tarsal
[same direction]
metatarsophalangeal
convex: metatarsals
concave: phalanges
[same direction]
IP joints of toes
convex: the more proximal phalange
concave: the more distal phalange
[same direction]
temporomandibular
convex: mandible
concave: temporalis
[opposite direction]
convex-concave rule:
with convex on concave, roll and glide occur in the ________ direction.
convex-concave rule:
- with CONVEX on concave, roll and glide occur in the OPPOSITE direction
- mobilizing force should be applied in the opposite direction of bone movement
convex-concave rule:
with concave on convex, roll and glide occur in the ________ direction
convex-concave rule:
- with CONCAVE on convex, roll and glide occur in the SAME direction
- mobilizing force should be applied in the same direction of bone movement
indications for mobilization (3)
restricted joint mobility
restricted accessory motion
desired neurophysiological effects
contraindications for mobilization (8)
active disease
infection
advanced osteoporosis
articular hypermobility
fracture
acute inflammation
muscle guarding
joint replacement