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TEAR, ANTERIOR SUPERIOR LABRUM WITH DEGENERA…

Case 796657
MSK › Normal/Variants
old
5 MR images
Tear, anterior superior labrum with degeneration of articular cartilage
By John Hunter, Radiologist
09/24/2011.
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BILATERAL ACCESSORY NAVICULAR BONES (AN TYPE…

Case 796691
MSK › Other
old
2 MR images
Bilateral accessory navicular bones (Type II AN). See also Case 30c There are two types of AN. Type I AN (30%) represents a sesamoid bone in the posterior tibialis tendon at the insertion into the navicular. They tend to be round or oval and may be seen up to 5mm medial and … [view case]
By John Hunter, Radiologist
09/24/2011.
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CHRONIC PARTIAL TEAR OF ANTERIOR TIBIALIS TE…

Case 796699
MSK › Trauma
old
4 MR images
Chronic partial tear of anterior tibialis tendon.
By John Hunter, Radiologist
09/24/2011.
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ILIOPSOAS HEMATOMA

Case 796713
MSK › Trauma
old
6 MR images
Iliopsoas hematoma Patient on coumadin.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

MASS (HEMATOMA) IN THE LEFT SCIATIC NOTCH CO…

Case 796744
MSK › Trauma
old
6 MR images
Mass (hematoma) in the left sciatic notch compressing sciatic nerve. High signal in the sciatic notch and iliacus muscle on the left was noted. Radiographs and CT showed no pelvic fracture or pelvic ring disruption.
By John Hunter, Radiologist
09/24/2011.
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PERONEUS QUARTUS MUSCLE AND TENDON

Case 796868
MSK › Normal/Variants
old
3 MR images
Peroneus quartus muscle and tendon. This is a normal variant that can occur in 13-25% of patients. It runs posteromedial to the p.longus and p.brevis tendons. Some feel that it may be symptomatic because of the mass effect of the muscle. It can be confused with a soft tissue m … [view case]
By John Hunter, Radiologist
09/24/2011.
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INCREASED SIGNAL INTENSITY ALONG THE SUBLIME…

Case 797049
MSK › Normal/Variants
old
4 MR images
Increased signal intensity along the sublime tubercle of the ulna at the insertion of the ulnar collateral ligament with thickening of the ligament. This probably reflects an acute bone injury (occult avulsion??) superimposed on chronic changes in the ligament in an area under high stress in baseball pitching.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS FRACTURE, CALCANEUS

Case 796573
MSK › Trauma
old
2 MR images
Stress fracture, calcaneus
By John Hunter, Radiologist
09/24/2011.
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STRESS REACTION, TIBIA

Case 796623
MSK › Trauma
old
4 MR images
Stress reaction, tibia
By John Hunter, Radiologist
09/24/2011.
Not yet rated

MEDIAL CUNEIFORM FRACTURE

Case 796764
MSK › Trauma
old
9 MR images
Fracture, medial cuneiform.
By John Hunter, Radiologist
09/24/2011.
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STRESS REACTION DISTAL TIBIA

Case 796970
MSK › Normal/Variants
old
3 MR images
Stress reaction
By John Hunter, Radiologist
09/24/2011.
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AVN BOTH HIPS WITH PROGRESSION ON LEFT

Case 796981
MSK › Metabolic
old
7 MR images
AVN hips, bilateral, with progression to articular collapse on the left. The patient has SLE and is on chronic, high dose steroids.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

CONTUSION, POSTERIOR ASPECT OF THE TROCHLEA …

Case 797004
MSK › Trauma
old
6 MR images
Contusion, posterior aspect of the trochlea with intact UCL. The proximity of this contusion to the UCL most likely led to the confusion in clinical diagnosis.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

CONTUSIONS OF TALUS AND CALCANEUS AT THE POS…

Case 797024
MSK › Trauma
old
3 MR images
Contusions of talus and calcaneus at the posterior facet of the subtalar joint.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

INTRA-MUSCULAR LIPOMA, THIGH

Case 797063
MSK › Benign Mass, Cyst
old
2 MR images
Intra-muscular lipoma.
By John Hunter, Radiologist
09/24/2011.
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NEAR COMPLETE TEAR, DISTAL BICEPS TENDON.

Case 797071
MSK › Trauma
old
5 MR images
Near complete tear, distal biceps tendon.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

PARTIAL TEAR, BICEPS FEMORIS: HAMSTRING PART…

Case 796533
MSK › Trauma
old
4 MR images
Partial tear, biceps femoris: hamstring partial tear.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

POSTERIOR, INFERIOR LABRAL TEAR, LEFT HIP

Case 796879
MSK › Trauma
old
8 MR images
Posterior, inferior labral tear, left hip. This is an unusual location.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

RIGHT SACRAL INSUFFICIENCY FRACTURE

Case 796905
MSK › Trauma
old
6 MR images
Right sacral insufficiency fracture. The coronal STIR images show the right vertical limb and the horizontal limb of the classic "Honda" sign, MR version with similar findings on bone scan.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS REACTION (NO ACTUAL FRACTURE LINE IDE…

Case 796959
MSK › Normal/Variants
old
3 MR images
Stress reaction (no actual fracture line identified) middle cuneiform-second metatarsal joint.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

CHONDROBLASTOMA, GREATER TROCHANTER RIGHT HI…

Case 796114
MSK › Benign Mass, Cyst
old
5 MR images
Chondroblastoma in an epiphyseal equivalent(ie. greater trochanter). Notice that the degree of edema is greater than one might expect from the lesion and the linear, vertical black line on the coronal STIR image (as well as sclerosis on the plain film) suggesting stress or ins … [view case]
By John Hunter, Radiologist
09/24/2011.
1 comment
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PLANTAR FIBROMATOSIS

Case 796270
MSK › Benign Mass, Cyst
old
4 MR images
Plantar fibromatosis. This is a benign nodular fibrous proliferation which arises within the plantar aponeurosis. It is bilateral in 10-40% and has a male:female ratio of approximately 2:1. Multiple nodules at presentation are uncommon, around 10%, but increase in incidence wi … [view case]
By John Hunter, Radiologist
09/24/2011.
Not yet rated

GANGLION, WRIST

Case 796139
MSK › Benign Mass, Cyst
old
4 MR images
Ganglion, wrist.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

ILIOPSOSAS BURSAL GANGLION

Case 796185
MSK › Benign Mass, Cyst
old
6 MR images
Iliopsosas bursal ganglion.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

NORMAL SCREENING STUDY FOR HIP STRESS FRACTU…

Case 796205
MSK › Normal/Variants
old
4 MR images
Normal study. However, this case illustrates a point: Many MSK radiologists have noted that "hip" pain in this patient population sometimes is secondary to a proximal third femoral stress fracture; therefore, you should always include the proximal femur when working up these patients and not zero in on the hip alone.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

PARALABRAL CYST, ANTERIOR LABRUM, LEFT HIP W…

Case 796239
MSK › Benign Mass, Cyst
old
5 MR images
Paralabral cyst, left anterior labrum. These usually indicate a labral tear, but the latter requires MR arthrography or hip arthroscopy for diagnosis. The labral abnormalty is probably secondary to the premature degenerative changes secondary to hip dysplasia. Note the somewhat shallow left acetabulum and contralateral OA changes in the right hip.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

PARALABRAL CYST, POSTERIOR LABRUM OF HIP

Case 796256
MSK › Benign Mass, Cyst
old
4 MR images
Paralabral cyst, posterior labrum.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

GANGLION, SINUS TARSI.

Case 796036
MSK › Benign Mass, Cyst
old
4 MR images
Ganglion, sinus tarsi.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

PARTIAL TEAR, PLANTAR FASCIA

Case 796060
MSK › Trauma
old
1 MR image
Partial tear, plantar fascia.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

GANGLION, GREAT TOE IP JOINT

Case 796131
MSK › Benign Mass, Cyst
old
2 MR images
Ganglion. This could also represent a homogeneous solid lesion by MR criteria alone: any confusion can be settled with ultrasound or by using IV gadolinium. A solid mass will enhance whereas a cyst will not.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

DISTAL TIBIAL STRESS FRACTURE

Case 796505
MSK › Trauma
old
4 MR images
Distal tibial stress fracture
By John Hunter, Radiologist
09/24/2011.
Not yet rated

SICKLE CELL DISEASE

Case 796547
MSK › Hematological
old
8 MR images
Sickle cell disease. Note the extensive red marrow reconversion, AVN right hip and both knees and bone infarcts in both femurs.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS REACTION, POSTERIOR PROCESS TALUS

Case 796313
MSK › Normal/Variants
old
4 MR images
Stress reaction, posterior process of talus. There is fluid in the FHL tendon sheath.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

BILATERAL OSTEOMYELITIS, CALCANEUS IN A DIAB…

Case 796386
MSK › Infection
old
7 MR images
Bilateral osteomyelitis, calcaneus.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

GLOMUS TUMOR, PALMAR ASPECT OF DIGIT

Case 796409
MSK › Benign Mass, Cyst
old
5 MR images
Glomus tumor, palmar aspect of digit Nice discussion of glomus tumor of finger: http://www.rbrs.org/database/84-2/page73.html Glomus tumor is a benign tumor arising from the neuromyoarterial apparatus, which regulates skin perfusion. While typically in the subungual area ass … [view case]
By John Hunter, Radiologist
09/24/2011.
Not yet rated

RETROCALCANEAL BURSITIS

Case 796426
MSK › Inflammatory
old
1 MR image
Retrocalcalcaneal bursitis. This is a synovial lined bursa which can become symptomatic in athletes, especially those who wear high top shoes. It is also a frequent target site for inflammatory arthritis such as rheumatoid, psoriatic and Reiters arthropathies.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS REACTION, MIDDLE FACET OF SUBTALAR JO…

Case 796431
MSK › Normal/Variants
old
6 MR images
Stress reaction, middle facet of subtalar joint. Because of suspicion that this edema might represent an occult talocalcaneal coalition, a CT was performed, ruling out this diagnosis.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

CALCANEAL STRESS FRACTURE

Case 796451
MSK › Trauma
old
4 MR images
Calcaneal stress fracture
By John Hunter, Radiologist
09/24/2011.
Not yet rated

CONTUSION MANUBRIUM AND TEAR OF FIRST RIB CA…

Case 796491
MSK › Trauma
old
4 MR images
Contusion manubrium and fracture of the cartilage of the first rib-manubrium junction. See discussion in Case 132c
By John Hunter, Radiologist
09/24/2011.
Not yet rated

BILATERAL TALOCALCANEAL TARSAL COALITIONS

Case 797784
MSK › Congenital
old
3 MR images
Bilateral talocalcaneal tarsal coalitions, at the level of the middle facet of the subtalar joint.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

BRODIE'S ABCESS, DISTAL FEMUR

Case 797795
MSK › Infection
old
3 MR images
Brodie's abcess.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

DERMATOMYOSITIS INVOLVING THE QUADS AND HAMS…

Case 796028
MSK › Inflammatory
old
2 MR images
Dermatomyositis involving the quads and hamstrings bilaterally, with sparing of the adductors. A site in the quadriceps muscles would be suitable for biopsy.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

RA WITH RETROCALCANEAL BURSAL EROSIONS

Case 796284
MSK › Normal/Variants
old
9 MR images
Right foot: Mass in the retrocalcaneal bursa, intermediate on T2, probably pannus, but no erosions Left foot: Mass in the retrocalcaneal bursa, probably fluid and pannus, with osseous erosions in the calcaneus. There is a focal fluid collection just medial to the insertion of the posterior tibialis … [view case]
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS REACTION, POSTERIOR TALUS

Case 796327
MSK › Normal/Variants
old
4 MR images
Stress reaction, posterior talus. These athletes land on a plantar flexed foot, much as do ballet dancers, stressing the posterior talus area.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS REACTION, PROXIMAL FEMUR

Case 796341
MSK › Normal/Variants
old
3 MR images
Stress reaction, proximal femur. (See also Case 46c and Case 61c) (44.415) This probably represents a case of "thigh splints" or adductor avulsion syndrome described recently in AJR : Adductor insertion avulsion syndrome (thigh splints): spectrum of MR imaging feat … [view case]
By John Hunter, Radiologist
09/24/2011.
Not yet rated

TB C7 VERTEBRAL BODY WITH RETROPHARYNGEAL AB…

Case 796352
MSK › Infection
old
4 MR images
TB of the C7 vertebral body with retropharyngeal abcess.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

ADDUCTOR/PECTINEUS AVULUSION

Case 797759
MSK › Trauma
old
5 MR images
Avulsion of adductor/pectineus muscle insertion on the pubis.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS FRACTURE, CALCANEAL TUBEROSITY

Case 797685
MSK › Trauma
old
4 MR images
Stress fracture, calcaneal tuberosity.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS FRACTURE, FEMORAL NECK

Case 797699
MSK › Trauma
old
2 MR images
Stress fracture, femoral neck.
By John Hunter, Radiologist
09/24/2011.
Not yet rated

STRESS REACTION, MEDIAL CORTEX, LEFT FEMORAL…

Case 797707
MSK › Trauma
old
4 MR images
Stress reaction, medial femoral neck cortex.
By John Hunter, Radiologist
09/24/2011.
Not yet rated