20 results
Mytomes - Segmental Innervation of Muscles
Shoulder	Abduction	C5	Axillary Nerve
Shoulder	Adduction	C6-C8	Thoracodorsal Nerve
Elbow	Flexion	C5	Musculocutaneous Nerve
Elbow	Extension	C7	Radial Nerve
Wrist	Extension	C6	Radial Nerve
Fingers	Flexion	C8	Median Nerve
Fingers	Abduction	T1	Ulnar Nerve
Hip	Flexion	L2	Nerve to Psoas
Hip	Extension	S1	Inferior Gluteal
Extension S1 Inferior ... Gluteal Nerve Knee ... Tibial Nerve Knee ... #MuscleGroups #MSK ... #Orthopedics #Neurology
Approach to Joint Pain - Diagnostic Framework

1) Chronicity
2) Inflammatory vs Non-Inflammatory
3) Number of Joints Involved

1) Chronicity:
Approach to Joint ... OA *Always do arthrocentesis ... - parvovirus, HIV ... #Joint #Pain #MSK ... approach #workup #differential
Ultrasound guided arthrocentesis (knee) with a resident.  Same principles apply for all ultrasound guided procedures.
arthrocentesis ... (knee) with a resident ... on the needle tip ... #Arthrocentesis ... #MSK
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Infectious Joint ... Pain - Differential ... rash) • Primary HIV ... Infectious #JointPain #MSK ... Diagnosis #Algorithm #Orthopedics
Suprapatellar Hematoma on POCUS
Before knee arthrocentesis, be sure fluid is inside joint. Hypoechoic suprapatellar lesion, partly
arthrocentesis, ... fluid is inside joint ... Hematoma #POCUS #ultrasound ... #clinical #msk ... #knee
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
JointHip Dysplasia ... Legg-Calve-Perthes Disease Knee ... Deformity #Limp #MSK ... #Differential # ... Diagnosis #Algorithm #Orthopedics
Knee Effusion on POCUS

Subtle Knee effusion can be made more evident by milking the inferior joint
Knee Effusion on ... by milking the inferior ... joint space Dr ... Effusion #POCUS #ultrasound ... #clinical #Msk
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential ... Fever/Chills/Joint ... Brucellosis - Viruses: HIV ... Effusions #causes #differential ... #diagnosis #msk
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
Acromioclavicular Joint ... Abdominal Reflex L2 Anterior ... Medial Thigh Hip ... Femoral Condyle Knee ... NerveRoots #Levels #differential
Medial Knee Intra-articular Corticosteroid Injection 

Injection of medial knee with intra-articular steroid. Find the inferior part
Medial Knee Intra-articular ... Find the inferior ... Feel joint line ... physicalexam #procedure #msk ... #orthopedics #sports