Loose Bodies
Source
OCD
OA - Osteophytes
Meniscus
Symptoms
Pain
Locking
Clicking
Can cause chondral damage
Xray
OA Loose Bodies
OCD
OA - Osteophytes
Meniscus
Pain
Locking
Clicking
Can cause chondral damage
OA Loose Bodies
Patella may develop from one or multiple ossification centres at 3 years
Failure of centres to fuse may produce bipartite or tripartite patella
- usually bilateral and painless
Classically superolateral
I Inferior Pole 5%
II Lateral 20%
Size
2 x as strong as ACL
About the same length as ACL 38 mm
Cross sectional area 150% of ACL
13 mm diameter (thicker)
2 Bundles
1. Anterolateral
- most important
- double the size of the posteromedial
- tight in flexion
- try to reconstruct this bundle
LHB primary function is humeral head depressor
Also accelerate / decelerate arm in overhead sports
Biceps problems usually occur with other pathology
- rotator cuff / instability
3 main problems
1. Degeneration
Repetitive friction of iliotibial tract over GT
Overuse in athletes
Common post THR
May be associated with gluteus medius tears
Pain over upper lateral thigh with activity
- often related to hip flexion
Self limiting syndrome of unknown aetiology
- hip pain associated with osteoporosis of proximal femur
AVN
- AVN of the hip in pregnancy is rare but possible
- TOH tends to be diffuse on MRI, while AVN is localised
- extends to neck and metaphysis
- transient osteoporosis has normal bone scan
Rare
- M: F 3:1
Non-traumatic or traumatic condition of femoral head with bone death
20 - 50 yo (average 38)
- M: F 4:1
70-80% with AVN will progress within 1 year
Largely related to degree of displacement
Hawkins Type I
- 0% to 13%
Hawkins Type II
- 20% to 50%
- usually only patchy and not a problem (rarely collapses)
Mid-substance calcification of the rotator cuff
- part of a metaplasia secondary to hypoxia
2 groups of patients
Patients usually complain of subluxation rather than dislocation
- rarely requires reduction
Different entity to acute posterior dislocation usually
Rare
1. Ligamentous laxity > 50%
- commonly associated with MDI
- posterior only 20%
- posterior & inferior 20%