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Thoracic Back Pain in an Intercollegiate Female Rower. Mike Lawler M.A., ATC, LAT Senior Associate Athletic Trainer The University of Iowa. Introduction Case presentation Discussion Conclusions. Rowing at Iowa Beginning 16 th year as an intercollegiate sport 60-70 rowers on team

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thoracic back pain in an intercollegiate female rower

Thoracic Back Pain in an Intercollegiate Female Rower

Mike Lawler M.A., ATC, LAT

Senior Associate Athletic Trainer

The University of Iowa

slide2

Introduction

  • Case presentation
  • Discussion
  • Conclusions
slide3

Rowing at Iowa

    • Beginning 16th year as an intercollegiate sport
    • 60-70 rowers on team
    • Varsity and Novice
    • Practice for 2½ hours on water and 1 hour with strength & conditioning coach
case presentation
Case Presentation
  • 20 YO female rower for the University of Iowa. No previous experience as a rower prior to enrolling at Iowa in 2005.
  • Onset: April 12, 2007 during spring season - 3 weeks left in her season
  • CC:
    • Swelling and pain at left anterior rib cage
    • Painful left upper back;
    • Pain while rowing in practice
    • Numbness at left mid back below scapula
    • Occasional dyspnea
  • Previous hx: None; gradual onset with no acute episode
  • Continued to participate in practices until symptoms worsened and performance became affected
  • Symptoms initially only with rowing but now during ADL’s
slide5

Examined by certified athletic trainer in athletic training room

    • Assessment: Possible costochondritis; posterior rib stress reaction; paraspinal strain
  • treated with therapeutic modalities
    • Cold/ice bag
  • allowed to continue rowing, as tollerated
  • After one week her symptoms failed to improve
  • She was referred to UISMC and orthopaedic physician on April 18, 2007
musculoskeletal injuries 1994 2006
Musculoskeletal Injuries 1994 - 2006

Low Back 104 27.7%

Knee 49 13.1%

Chest/Rib 40 10.7%

Upper Back 26 6.9%

Ankle 25 6.7%

Wrist 23 6.1%

Shoulder 17 4.5%

Patella 17 4.5%

Hip 16 4.3%

Foot 16 4.3%

Tibia 13 3.5%

Neck 8 2.1%

Elbow 7 1.9%

Forearm 6 1.6%

Fibula/Calf 3 0.8%

Finger 2 0.5%

Other 3 0.8%

TOTAL 375 100%

physical examination by orthopaedic team physician 4 18 07
Physical Examination by Orthopaedic Team Physician – 4/18/07

Examination findings:

  • Slight prominence of the costochondral joint from anterior left side of chest
  • Palpable tenderness in left paraspinal muscles
  • Numbness noted in the left thoracic paraspinal area
  • Posterior thoracic pain is aggravated with motion in all directions
  • Upper extremity function was normal
  • Neurologic exam: normal
  • Radiograph studies:
x rays
X-rays
  • L-Spine Standing AP & Standing Lateral Flexion/Extension views
    • Findings/Impression:
      • There is no evidence of a fracture or dislocation. The osseous structures are in gross anatomic alignment. There is no soft tissue abnormality
      • Negative exam
impression
Impression
  • Costochondritis left anterior rib cage
  • Referred pain posteriorly
  • Thoracic radiculopathy
slide10
Plan
  • Provided prescription for naproxen – 500 mg BID
  • MRI imaging was offered to rule out thoracic disk herniation if sx.’s fail to improve or worsen
  • Progress to be followed by staff athletic trainer

She was able to finish out spring season but not without resolution of symptoms; treated symptomatically.

status as of august 22 2007 prior to start of 2007 2008 season
Status as of August 22, 2007 prior to start of 2007-2008 season
  • 2-3 months of no rowing during summer
  • Unproductive chiropractic treatments during summer
  • Resolution of left anterior chest swelling
  • Same amount of continuous pain, described as a “pinching” just below scapula on left side
  • When active, pain increased but was less severe than when she would row
  • Patch of numbness was still present just below left scapula
  • Numbness had slightly migrated to right side of back and up right side of her back to just above right scapula
  • She had not noticed any UE weakness
return visit to orthopaedic team physician 8 22 07
Return Visit to OrthopaedicTeam Physician – 8/22/07

Examination findings:

  • Palpable tenderness about T10 just to left of thoracic spine. No other tenderness
  • Numbness noted inferior to left scapula
  • No palpable tenderness of anterior chest wall
  • Increase of pain with lateral bending and twisting. No pain with flexion & extension
  • Chest X-rays - normal
slide13
Plan
  • MRI imaging was scheduled to rule out thoracic disc herniation
  • Reasoning?
    • Persistent pain
    • Patch of numbness
    • Pain with movement
    • To look deeper for a cause
thoracic cervical mri findings
Thoracic & Cervical MRI Findings
  • A small syrinx within the midthoracic spinal cord from the T6 through portion of T8 levels, measuring 1.8 mm max. diameter
  • Above and below syrinx, thin central high T2 signal appeared most consistent with normal spinal CSF central canal
  • No abnormal focus on enhancement
  • No underlying lesion was identified
  • Spinal cord signal was otherwise unremarkable
  • No central stenosis
  • Cervical & thoracic spine exhibited no degenerative changes
  • Normal configuration of the intra cranial posterior fossa structures, without evidence for Chiari malformation
syrinx
Syrinx
  • A syrinx is a fluid-filled cavity within the spinal cord (syringomyelia) or brain stem (syringobulbia).

Taber’s Cyclopedic Medical Dictionary

  • Symptoms include flaccid weakness of the hands and arms and deficits in pain and temperature sensation in a capelike distribution over the back and neck
      • Sx.’s not reported by this patient
slide19

Syrinxes usually result from lesions that partially obstruct CSF flow.

    • At least ½ of syrinxes occur in patients with congenital abnormalities of the craniocervical junction (eg, herniation of cerebellar tissue into the spinal canal, called Chiari malformation), brain (eg, encephalocele), or spinal cord. For unknown reasons, these congenital abnormalities often expand during the teen or young adult years.
    • A syrinx can also develop in patients who have a spinal cord tumor, scarring due to previous spinal trauma, or no known predisposing factors. About 30% of people with a spinal cord tumor eventually develop a syrinx.
            • Source: Merck Manual online
referral to spine team physician 8 27 07
Referral to Spine Team Physician - 8/27/07
  • Exam Findings
    • LE neurovascular exam – normal
    • Tenderness to palpation over posterior rib at T8 level on left
    • Chest x-ray showed a possible lytic lesion on left 8th rib posteriorly
    • No indication of myelopathic findings – syrinx is not likely cause of her symptoms
  • Plan: Obtain CT scan of 7th – 9th posterior ribs
ct scan of ribs
CT Scan of Ribs
  • Axial CT scanning of the mid and lower thoracic spine and medial aspect of of the ribs was performed without intravenous contrast
  • FINDINGS:
    • No lytic or sclerotic lesions were identified in the medial aspects of posterior ribs.
    • No abnormal soft tissue masses were identified.
    • There were no degenerative changes of the visualized thoracic spine
  • IMPRESSION: No abnormality in the medial aspects of the mid and lower thoracic ribs.
where do we stand at this point
Where do we stand at this point?
  • Ongoing symptoms of back pain in middle aspect of spine, left side
  • “Numbness” in her back on left side
  • Mid thoracic spine and left paraspinal tenderness
  • MRI showed syrinx that was determined to not be cause of symptoms
  • CT scan showed no abnormal findings
  • Chest x-ray read as normal
  • Treatment with therapeutic modalities: heat, e-stim, ice
  • Prior pain in left anterior aspect of ribs has resolved
  • Still experiencing pain while rowing – participation is limited
slide23
Plan
  • Continue local therapeutic modalities
  • Neurosurgery consult for possible facet or nerve root injection
  • Medrol dose pack for competitions
  • Follow-up with team orthopaedic physician and/or Spine Team orthopaedic physician prn
  • Allowed to participate, as tollerated
referral to uihc pain clinic neurosurgery consult
Referral to UIHC Pain Clinic – Neurosurgery Consult
  • Received costovertebral/costotransverse injection on 11/02/07
  • Allowed to return to rowing activity
  • Patient reported that “the injection helped for a little while but then wore off.”
additional referral and treatment
Additional Referral and Treatment
  • Medication changed from Naproxen to Piroxicam
  • Second series of 2 injections at T9 and T11 on 11/28/07
  • Prescribed Lidoderm patches by Pain Clinic physician
  • Treatment with iontophoresis in athletic training room
  • Treatment with T.E.N.S.
spring 2008 rowing season
Spring 2008 Rowing Season
  • 2008 Winter Training Trip
    • Stationary bicycle – no erging, only drill work on water
  • February – May 2008
    • Continued to row until pain forced her to rest
    • Repeated this pattern throughout spring 2008
  • Reported previous injections had somewhat helped because pain was not as intense
  • Persistent symptoms of skin sensitivity and “numbness”
  • Attended follow-up care with UIHC Pain Clinic
  • Allowed to finish out season, as tolerated
fall 2008 rowing season
Fall 2008 Rowing Season
  • Resumed practicing with recurrent symptoms of pain, tenderness over posterior ribs, just to left of thoracic spine, and mid-back and left side numbness
  • Symptoms presented during rowing and strength training activities, diminished with rest
  • Continued to participate in most practices and competed in all fall races
  • End of fall season follow-up with Spine team orthopaedic physician
follow up examination with spine team orthopaedic physician 12 15 08
Follow-up Examination with Spine Team Orthopaedic Physician – 12/15/08
  • Review of 8/22/07 MRI findings
    • Benign other than incidental thoracic syrinx not felt to be contributing to her symptoms
  • Neurovascular exam was normal

Plan:

  • Repeat thoracic spine MRI with contrast to evaluate any progression of syrinx
  • Renew prescription for Lidocaine patches
repeat thoracic spine mri with contrast
Repeat Thoracic Spine MRI with Contrast
  • IMPRESSION:
    • Stable mid thoracic small syrinx
    • No lesion visualized
  • PLAN:
    • Refer back to team orthopaedic physician and Pain Clinic for continuation of care
spring 2009 rowing season
Spring 2009 Rowing Season
  • Participated, as tollerated, in Winter Training Trip
  • Continued to experience pain and numbness sx.’s
  • Treatment with:
    • Lidoderm patches
    • T.E.N.S.
    • Iontophosesis
    • NSAID - Piroxicam
  • Participated in spring practices and races
    • “good days and bad days”
  • Finished out rowing career on May 17, 2009
  • Graduated from the University of Iowa
discussion
Discussion
  • Hx. of chest/rib pain in rowers
  • Discovery of benign syrinx by MRI
  • Multidisciplinary team approach to care of patient
  • Multiple treatments used with varied results
  • Even with best efforts, there was a failure to achieve complete relief of symptoms
  • Conclusive diagnosis?
conclusions
Conclusions
  • MRI showed a midthoracic small spinal cord syrinx that was concluded to not be cause of her symptoms
  • Persistent mid-thoracic back pain and numbness
  • “It’s not about what it is, but what it isn’t”
    • No rib stress fracture
    • No herniated thoracic disc
    • No abnormal soft tissue masses
    • No degenerative changes of thoracic spine