السؤال
Act as a Senior Physiotherapist Spechialized in Post-operative Rehabilitation

بعد عمليات ال Cervical Laminectomy بنقابل مشكلة في ال upper limbs منها ال shoulder shrugging و inability to flex or abduct "raise" the shoulders

state what is the problem, the cause of the problem and how to deal and solve it

الإجابة

Yes. In the post-operative cervical laminectomy patient, this pattern is not simply a “weak shoulder”. The combination of shoulder shrugging + inability to actively flex/abduct the arm should make you think about a neurological motor deficit, particularly involving the C5–C6 myotomes / shoulder girdle muscles.

1. What is the problem?

The typical presentation is:

• Poor or absent active shoulder flexion and abduction

• Difficulty initiating elevation of the arm

• Compensatory shoulder shrugging during attempted elevation

• Deltoid weakness ± supraspinatus weakness

• Possible biceps weakness

• Sometimes preserved passive ROM

• The patient may be able to move the elbow/wrist/hand relatively better than the shoulder

This is often referred to clinically as postoperative C5 palsy, especially when it develops after cervical decompression.

The key distinction is:

The patient wants to elevate the arm, but the prime movers cannot generate sufficient force, so the upper trapezius takes over → shoulder shrugging.

2. Why does it happen?

A. C5 nerve-root dysfunction — the classic cause

After cervical decompression, particularly at C3–C6, the C5 nerve root can become dysfunctional.

The C5 root contributes significantly to:

• Deltoid → shoulder abduction

• Supraspinatus → initiation of abduction

• Biceps → elbow flexion

• Some contribution to shoulder flexion

So if C5 is affected:

C5 dysfunction → ↓ deltoid/supraspinatus activation → inability to elevate arm

while the upper trapezius may remain relatively strong because its motor supply is primarily through the spinal accessory nerve (CN XI) with cervical contributions.

Therefore the patient tries:

“Raise my arm” → deltoid fails → upper trapezius compensates → SHRUG.

B. Why can cervical laminectomy cause C5 palsy?

The exact mechanism isn't always one single process. Proposed mechanisms include:

1. Posterior shift of the spinal cord after decompression

2. Tethering/stretching of the C5 nerve root

3. Pre-existing foraminal stenosis at C4–5

4. Direct/indirect nerve-root irritation

5. Spinal cord/anterior horn involvement

This is why a patient can actually develop new shoulder weakness after a technically successful decompression.

3. Very important: Don't assume every postoperative shoulder problem is C5 palsy

Before treating it as C5 palsy, the physiotherapist should differentiate it from:

C5 root palsy

Think:

Deltoid ↓ + biceps ↓ ± sensory changes over lateral shoulder/upper arm

C6 involvement

More likely:

• Shoulder elevation may be affected

• Elbow flexion

• Wrist extension

• Sensory symptoms toward thumb/index finger

Axillary nerve injury

More isolated:

• Deltoid weakness

• Supraspinatus relatively preserved

• Sensory changes over the lateral shoulder/"regimental badge"

Spinal accessory nerve injury

This is different and important.

You may see:

• Marked shoulder shrug weakness

• Scapular dysfunction

• Trapezius wasting

• Difficulty elevating the scapula

In this situation, the patient wouldn't typically shrug strongly as a compensation.

Rotator cuff pathology / postoperative shoulder pathology

If:

Passive ROM is good but active elevation is severely limited

you still need to distinguish neurological weakness from a painful/structural shoulder problem.

4. How should we assess the patient?

I would structure the physiotherapy assessment like this:

Step 1 — Active vs passive ROM

Ask the patient to:

• Flex the shoulder

• Abduct the shoulder

Then perform passive elevation.

Passive ROM preserved + active ROM severely restricted → think motor weakness/neurological deficit.

Step 2 — Manual Muscle Testing

Especially:

The pattern is much more useful than looking at the shoulder alone.

Step 3 — Check sensation

Especially:

C5 dermatome → lateral upper arm / deltoid region

Also check C6, C7, C8 and T1.

Step 4 — Reflexes

Check:

• Biceps reflex → C5–C6

• Brachioradialis → C6

• Triceps → C7

A reduced biceps reflex together with deltoid weakness strengthens suspicion of C5 involvement.

Step 5 — Scapular movement

Observe:

• Upper trapezius

• Serratus anterior

• Rhomboids

• Scapular winging

• Scapulohumeral rhythm

This tells you whether the shrug is a compensation or whether there is a primary scapular motor deficit.

5. How do we treat it?

The biggest mistake is:

“He can't raise his arm → force him to raise it repeatedly.”

If this is neurological weakness, aggressive strengthening isn't the first priority.

The treatment is generally protect → maintain → facilitate → strengthen → retrain.

Phase 1 — Protect the shoulder

Because the deltoid/rotator cuff may be very weak, the shoulder can become poorly supported.

Avoid:

• Heavy resistance

• Repetitive painful elevation

• Pulling the arm into elevation

• Aggressive overhead exercises

• High-load theraband exercises early on

Maintain good positioning of the upper limb.

6. Maintain full passive ROM

This is extremely important.

If the patient cannot actively elevate the arm, you don't want:

neurological weakness → immobility → stiffness → adhesive capsulitis

Therefore perform gentle:

• Passive shoulder flexion

• Passive abduction

• External rotation

• Internal rotation

within a comfortable range and according to the surgeon's postoperative restrictions.

The goal is:

Keep the shoulder mobile while the neurological recovery occurs.

7. Facilitate active movement

This is where physiotherapy becomes particularly useful.

Instead of asking:

"Raise your arm."

and allowing a huge shrug,

use assisted movement.

Example:

Patient supine → gravity is reduced.

Ask them to flex the shoulder while you assist the movement.

For example:

Patient initiates → therapist assists → patient completes as much as possible.

You can progress:

PROM → AAROM → AROM → resisted movement

rather than jumping directly to resistance.

8. Reduce the shrugging compensation

This is important.

When the patient attempts abduction:

Upper trapezius dominates → scapula elevates → humerus doesn't actually elevate effectively.

You want to teach:

scapular upward rotation + humeral elevation

rather than:

scapular elevation only.

Useful strategies include:

Supine shoulder flexion

Because gravity is minimized.

Table slides

Patient slides the hand forward on a table.

Wall slides

Later, when sufficient control exists.

Assisted pulley

Can be useful, but only if the patient can control the movement and isn't simply hiking the shoulder.

9. Strengthening

Once there is evidence of active contraction:

Start with the deltoid

Very low-load:

Isometric → active-assisted → active → resisted

For example:

Deltoid isometric

Patient attempts abduction against very light resistance without actually moving the arm.

Then progress to:

short-range active abduction

then:

full-range active abduction

then resistance.

Don't forget the scapular stabilizers

You don't want to strengthen only the deltoid.

Work progressively on:

• Serratus anterior

• Middle/lower trapezius

• Rhomboids

• Rotator cuff

• Scapular upward rotation

The goal is to restore:

scapulohumeral rhythm

rather than simply increasing shoulder strength.

10. NMES / Electrical stimulation

This can be considered when there is poor voluntary recruitment of the deltoid.

For example:

NMES to deltoid + attempted active movement

The concept is:

Electrical activation + patient's voluntary attempt → facilitate recruitment.

However, this should be used selectively and according to the patient's neurological status, surgical precautions, sensation, skin condition and local protocol.

It is not a substitute for neurological recovery.

11. Functional retraining

As strength returns, move toward meaningful tasks:

• Reaching forward

• Reaching to the side

• Grooming

• Feeding

• Dressing

• Reaching to shelves

• Bed mobility

• Transfers

The ultimate goal isn't:

“MMT 4/5.”

It's:

“Can the patient use the arm normally?”

12. When should you be concerned?

This is probably the most important part clinically.

A new postoperative neurological deficit should not simply be treated as a routine physiotherapy problem.

If there is:

• New or rapidly worsening weakness

• Severe new neck/arm pain

• New sensory loss

• New hand weakness

• Bilateral neurological deterioration

• New gait deterioration

• New bowel/bladder dysfunction

• Respiratory difficulty

• Progressive neurological deficit

→ contact the spine surgeon/neurosurgical team urgently.

The patient may need neurological examination and potentially imaging to exclude causes such as postoperative hematoma, residual compression, hardware-related issues, or other neurological complications.

The clinical picture in one diagram

Cervical decompression

↓

C5 nerve-root dysfunction / C5 palsy

↓

↓ Deltoid + ↓ supraspinatus activation

↓

Patient cannot effectively abduct/flex shoulder

↓

Upper trapezius compensates

↓

SHOULDER SHRUGGING

↓

Risk of stiffness + abnormal movement pattern

↓

Physiotherapy

Neurological assessment → protect shoulder → maintain PROM → AAROM → facilitate deltoid → scapular control → progressive strengthening → functional retraining

One important clinical point

If you're seeing post-cervical-laminectomy patients regularly, I would not label the problem simply as “shoulder weakness.” I'd document it more specifically, for example:

Postoperative upper-limb motor deficit characterized by marked weakness of shoulder abduction/elevation, with compensatory scapular elevation, suspicious for C5 myotomal involvement/C5 palsy.

Then document MMT, active vs passive ROM, sensation, reflexes, pain, and progression over time.

That distinction matters because C5 palsy is primarily a neurological complication that requires medical/neurosurgical follow-up alongside rehabilitation, rather than being treated as an isolated orthopedic shoulder problem.

السؤال
انا اشتغلت مع العيان دا فترة داخلين دلوقتي اهو في ٣ شهور

وجبت معاه لحد ٩٠ درجة abduction بس بيعملها بشوية substitustion خفيف كدا

قولي اي انواع التممارين اللي ممكن اعملها معاه عشان اعرف اطلع فوق ال ٩٠

هو على السرير في وضع ال supine بقا يقدر يجيب ال flexion above 90 deg وال abduction to 90 deg

لكن في وضع ال sitting بيجيب ال abuction 90 deg بالعافية ومعاه شوية shrugging خفيف وlateral trunk flexion وال flexion لحد مثلا ٣٠ او ٤٥ درجة بشوية thoracic extenstion

الإجابة
تمام، كده الصورة أوضح جدًا. بما إننا بعد 3 شهور، وعنده في الـ supine flexion >90° وabduction ≈90°، لكن الـ sitting بيظهر عنده shrugging + lateral trunk flexion، فده معناه غالبًا إن المشكلة الحالية مش مجرد "الـ ROM ناقص"؛ هو عنده ضعف في الـ active elevation ضد الجاذبية + ضعف في التحكم في scapulohumeral rhythm.

والـ fact إن الحركة بتتحسن جدًا في الـ supine مهم جدًا: ده يشير إنك تقدر تستغل gravity-eliminated → gravity-assisted → against gravity كـ progression.

الهدف دلوقتي

مش إننا "نزقه" فوق الـ90°.

الهدف:

Improve deltoid/rotator cuff force + scapular upward rotation + trunk control → reduce substitution → gradually achieve >90° active elevation.

1. أول حاجة: اشتغل على الـ Scapular Upward Rotation

الـ shrugging اللي بتشوفه غالبًا معناه إن الـ upper trap بيحاول يعمل شغل الـ elevation لوحده.

عايز تعلّمه:

Elevation = humeral elevation + scapular upward rotation

مش:

Elevation = scapular elevation (shrug).

Exercise: Supine Serratus Punch

في الـ supine:

• shoulder flexion حوالي 70–90°

• elbow extended

• يطلع الـ arm للـ ceiling عن طريق protraction of scapula

• يرجع ببطء.

ابدأ بدون وزن.

2–3 sets × 10–15

وبعدها ممكن وزن خفيف جدًا لو الـ control كويس.

2. Supine → Active-Assisted Flexion

دي من أهم الحاجات في حالته.

طالما هو بالفعل قادر يعمل flexion >90° في supine، استغل ده.

خليه يعمل:

Supine flexion → ببطء → أعلى range ممكن

وأنت تساعده فقط في الجزء اللي بيبدأ فيه يفقد الحركة.

مثلاً:

0–90° يعملها بنفسه
90–120° assist بسيط
120–140° assist أقل
وهكذا.

أهم حاجة:

Slow eccentric lowering

يعني:

يرفع بمساعدة بسيطة → ينزل لوحده ببطء.

ده مهم جدًا لبناء الـ motor control.

3. Supine Flexion → Inclined Flexion

دي progression ممتازة لحالته.

بدل ما تنقله مباشرة للـ sitting:

Level 1

Supine

↓

Level 2

Head of bed 30°

↓

Level 3

45°

↓

Level 4

60°

↓

Level 5

75°

↓

Level 6

Sitting

كل ما تزود الـ incline، الجاذبية تزيد.

لو قدر يعمل الحركة بدون substitution، ارفع الـ incline.

لو ظهر:

shrug + trunk extension

ارجع درجة.

دي بالنسبة لي من أفضل الطرق اللي ممكن تستخدمها مع الحالة دي.

4. Wall Slides — لكن بالطريقة الصح

ممكن تبدأ بـ bilateral wall slide.

خليه يحط إيديه على الحائط ويعمل:

forward/upward slide

مع التركيز على:

• no shrug

• no lateral trunk flexion

• no excessive thoracic extension

• smooth scapular upward rotation

Trick مفيد جدًا:

خليه يعمل الحركة بمساعدة الـ opposite arm.

يعني الذراع السليمة تساعد الذراع المصابة في الصعود.

مثلاً:

Affected hand + unaffected hand على towel

ويطلعوا مع بعض.

ده يسمح له يتخطى الـ90° بدون ما يضطر يستخدم trunk compensation.

5. Table Slides

ممتازة خصوصًا لو wall slides صعبة.

خليه sitting قدام ترابيزة.

اليد على towel.

ويعمل:

forward slide → diagonal slide

والـ trunk ثابت.

ابدأ:

flexion pattern

وبعدها:

scaption pattern

وده مهم جدًا لأن الـ scaption غالبًا أسهل وأكثر functional من pure abduction.

6. اشتغل على الـ Scaption بدل Pure Abduction

دي نقطة مهمة جدًا.

لو هو في sitting بي struggle مع الـ abduction، ما تخليش كل تدريبك pure frontal-plane abduction.

جرب:

Scaption

Arm حوالي 30–45° anterior to frontal plane

يعني مش lateral 90° بالظبط.

خليه يرفع في المسار ده.

غالبًا هتلاقي:

• أقل pain

• أفضل scapular mechanics

• أقل substitution

• أسهل recruitment للـ deltoid/scapular muscles

ابدأ:

AAROM → AROM

7. Side-lying Abduction

دي exercise ممتازة لحالته.

خليه ينام على الـ unaffected side.

الـ affected arm فوق.

ابدأ من:

0 → 90°

وبعدين تدريجيًا:

90 → 120°

ميزة الـ side-lying إنك بتقلل تأثير الجاذبية مقارنة بالـ sitting.

ممكن تستخدم:

short lever arm

يعني elbow flexed في البداية.

ثم:

long lever arm

لما القوة تتحسن.

8. Side-lying External Rotation

مهمة جدًا.

لأن الـ rotator cuff مش بس مسؤول عن الحركة؛ هو مهم في dynamic stabilization of the humeral head أثناء elevation.

ابدأ:

elbow at side → external rotation.

بعدها تدريجيًا:

ER at 45° abduction

ثم higher angles حسب القدرة.

9. Deltoid Isometrics

لو الـ deltoid مازال weak:

Abduction isometric

Arm قريب من الجسم.

اعمل resistance بسيط جدًا للـ abduction.

مثلاً:

5–10 sec hold × 5–8 repetitions

لكن مش الهدف إنك تعمل maximum contraction.

الهدف:

Improve voluntary recruitment.

10. Active-assisted → Active → Resisted

أنا هعمل progression بالشكل ده:

PROM

↓

AAROM

↓

AROM

↓

Isometric

↓

Light resistance

↓

Functional reaching

ومتستعجلش تدخل resistance لمجرد إنه وصل 90°.

أنا مهتم أكثر بـ:

Can he reach 90° without shrugging/trunk compensation?

لو آه → ابدأ تزود range.

11. تمرين مهم جدًا: Assisted Overhead Reach

في sitting أو standing.

خليه يمسك:

cane / stick

باليدين.

الـ unaffected arm يساعد الـ affected arm.

يعمل:

bilateral shoulder flexion

ويطلع فوق الرأس.

لكن:

ممنوع

• lumbar extension

• thoracic hyperextension

• lateral trunk flexion

• shoulder shrug

خليه يعمل الحركة ببطء.

2 × 8–12

12. بعد كده: Closed-chain shoulder elevation

مثلاً:

wall-supported weight bearing

اليد على الحائط.

ابدأ weight shift بسيط:

يمين / شمال

وبعدين:

wall push-up

لكن ده later stage، مش أول حاجة.

الفكرة إن الـ closed-chain exercises ممكن تساعده في:

scapular control + serratus activation + proprioception

أهم حاجة في حالتك: عالج الـ substitutions نفسها

أنت قلت عنده:

Abduction:

Shrugging + lateral trunk flexion

Flexion:

Thoracic extension

أنا مش هحاول أمنعهم بالقوة طول الوقت.

لكن استخدمهم كـ biofeedback.

مثلاً:

خليه يعمل الحركة قدام mirror.

وقوله:

"طلع دراعك، بس خلي كتفك بعيد عن ودنك."

أو:

"ما تميلش بجسمك."

وممكن تحط إيدك على:

upper trapezius

عشان يحس إمتى بدأ الـ shrug.

ودي نقطة مهمة جدًا في الـ sitting

جرب تعمل له:

Seated supported arm elevation

حط:

forearm/elbow على table أو towel

وخليه يعمل elevation/slide.

بعد كده قلل الـ support تدريجيًا.

يعني:

supported → partially supported → unsupported

وده هيعمل bridge ممتاز بين الـ supine والـ sitting.

برنامج عملي أعمله معاه

لو أنا ماسك الحالة دي، ممكن أعمل session بالشكل ده:

Warm-up / mobility

• PROM shoulder flexion/abduction

• gentle ER

• thoracic mobility

5–10 min

Motor activation

• Supine serratus punch

• Supine AAROM flexion

• Supine AAROM scaption

2–3 × 10–15

Gravity progression

• Incline flexion 30°

• 45°

• 60°

• 75°

اختار أعلى angle يقدر يعمل فيه الحركة بدون substitution واضح.

Scapular control

• Wall/table slides

• Serratus work

• controlled scapular upward rotation

Strength

• Deltoid isometric

• Side-lying ER

• Side-lying abduction

• progressive light resistance حسب الـ MMT

Functional

• assisted overhead reach

• reaching in different directions

• wall-supported elevation

والـ progression اللي أنا عايزه أشوفها

مش:

90° → 120° بالقوة

لكن:

Supine >120°

↓

Incline 30° >120°

↓

Incline 45° >120°

↓

Incline 60° >120°

↓

Incline 75° >120°

↓

Sitting 90° clean

↓

Sitting 100°

↓

110°

↓

120°

وهكذا.

كل مرحلة لازم تكون جودة الحركة كويسة قبل ما تزود الـ ROM.

وأخيرًا، بما إنه C5-type postoperative weakness

بعد 3 شهور، وجود تحسن من عدم القدرة على الرفع إلى 90° يعتبر clinically meaningful، لكن recovery من C5 palsy قد يستمر لفترة أطول، وبالتالي أنا مش هحكم على الـ prognosis من الـ ROM الحالي وحده. الأهم إنك تتابع MMT للـ deltoid/biceps، active ROM، quality of movement، sensation، والألم بشكل دوري.

ولو تحب، أقدر أعمل لك Progressive 6–8 week physiotherapy protocol للحالة دي، أسبوع بأسبوع، من 90° لحد overhead elevation مع الـ sets/reps وcriteria للـ progression/regression.