13 results
Positive Lachman test in ACL Injury

Here is an exam of a patient under anesthesia with an
looseness of the knee ... That causes the ... ACLTear #clinical #video ... Ortho #anterior #cruciate ... #ligament #msk
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity Dermatomes ... , T1 (median) Reflexes ... hand" ± Horner Syndrome ... Carpal Tunnel Syndrome ... #Myotomes #diagnosis
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
and Myotomes Reflexes ... : • Knee - L2 ... • Cauda Equina Syndrome ... Commonly caused ... #Myotomes #diagnosis
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... - Differential Diagnosis ... #Effusions #causes ... #differential #diagnosis ... #msk #physicalexam
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Differential Diagnosis ... Kasabach-Merritt syndrome ... deficiencies - PNH ... Pigmented Purpuric Dermatosis ... Gardner-Diamond syndrome
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
- Emergency Causes ... Differential Diagnosis ... region (S2-S4 dermatomes ... #differential #diagnosis ... #causes #neurology
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Cauda Equina Syndrome ... Causes: • Large ... of normal leg reflexes ... #MSK #pathophysiology ... #diagnosis #symptoms
Mucoid Degeneration of the ACL
Imaging Findings:
 • T2-hyperintense fluid-signal within the enlarged ACL on both the
• The anterior cruciate ... Case description ... - Can cause ... #degeneration #knee ... #msk
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
Arthritis Other Causes ... Legg-Calve-Perthes Disease Knee ... Patellofemoral Syndrome ... Deformity #Limp #MSK ... #Orthopedics #Causes
One and a Half Syndrome on Physical Exam

This 28 year old patient presented to clinic with
the follow up video ... fasciculus), which causes ... The most common causes ... the hospital, diagnosed ... with MS, and started