2.1 Upper Extremity Conditions & PTA Interventions

Why Upper Extremity Conditions Dominate the Musculoskeletal Domain

The Federation of State Boards of Physical Therapy (FSBPT) administers the NPTE-PTA as a 180-item, four-hour computer-based exam with a passing scaled score of 600 on a 200-800 scale. The musculoskeletal system is the single largest body-system category: summing its three subcategories on the 2024 content outline gives roughly 31-40 items (data collection 9-12, diseases/conditions 10-13, interventions 12-15).

Upper-extremity (UE) post-op cases recur because rehab is phase-driven and protocol-specific, and items test whether you can recognize a phase, choose the matching intervention, and flag what falls outside the plan of care (POC) — the PT-authored document the PTA executes.

Shoulder Conditions

Rotator Cuff Repair (RCR) Post-Op

Most surgeons immobilize the shoulder in a sling for 4-6 weeks. Progression speed depends on tear size, tissue quality, and fixation strength. A representative timeline:

Worked scenario: A patient at week 4 has only 80 degrees of passive flexion and the POC permits PROM in safe arcs. The PTA continues gentle PROM and documents the limitation; the PTA does not begin active elevation, because phase I forbids active shoulder motion regardless of how the patient feels.

Adhesive Capsulitis (Frozen Shoulder)

A progressive glenohumeral capsular contracture managed by stage:

• Freezing (painful): Pain dominates; emphasize pain-free PROM, modalities, gentle pendulums. Aggressive stretching worsens symptoms.
• Frozen (stiff): Pain eases, capsular end-feel limits motion; use low-load long-duration (LLLD) stretches and grade I-II joint mobilization within the POC.
• Thawing (recovery): Motion returns; progress end-range stretching, strengthening, and functional reach.

The shoulder capsular pattern of restriction is lateral rotation > abduction > medial rotation — a frequently tested Cyriax fact.

Acromioclavicular (AC) Joint Injuries

Graded I-VI by the Rockwood classification. Grades I-II (sprain to subluxation) are conservative: sling 1-3 weeks, isometrics, then progressive scapular and rotator cuff strengthening. Grades III-VI vary by surgeon; surgical fixation demands RCR-like phased caution.

Elbow Conditions

Lateral Epicondylalgia (Tennis Elbow)

Tendinopathy of the common extensor origin, usually extensor carpi radialis brevis (ECRB). Provocation: resisted wrist or middle-finger extension with the elbow extended (Cozen and Mill tests). Best-evidence PTA interventions: eccentric wrist extensor loading, isometric holds for analgesia, soft-tissue mobilization, counterforce brace, and activity modification.

Medial Epicondylalgia (Golfer's Elbow)

Tendinopathy of the common flexor-pronator origin. Provocation: resisted wrist flexion and pronation. The program mirrors lateral epicondylalgia but loads the flexor-pronator group eccentrically.

Post-Fracture Rehab (Radial Head, Olecranon, Supracondylar)

Most elbow fractures are immobilized 1-3 weeks, then AROM begins early because the elbow stiffens fast. The PTA collects goniometry weekly; flexion and supination return slowest. Heat before stretch, ice after, and no passive end-range force without PT clearance.

Wrist & Hand Conditions

Carpal Tunnel Syndrome (CTS)

Compression of the median nerve beneath the transverse carpal ligament. Symptoms: night paresthesias in the thumb, index, middle, and lateral half of the ring finger; positive Phalen, Tinel, and carpal-compression tests. Conservative PTA care: neutral-wrist night splints, median nerve glides, ergonomic education, and tendon glides.

Distal Radius Fracture (Colles)

After cast immobilization or ORIF, the PTA prioritizes edema control, digit AROM, and shoulder/elbow ROM during the immobilization window to prevent secondary stiffness. Wrist AROM typically starts week 2 (ORIF) to week 6 (closed reduction); grip strengthening waits until the surgeon clears loading, usually weeks 6-8. A common trap is letting the shoulder stiffen while focusing only on the wrist.

PTA Decision-Making Inside the Plan of Care

A PTA may collect ROM, MMT, girth, edema, and pain data and modify dosage (reps, sets, resistance, hold time) within the PT's POC. A PTA may not change the POC, add diagnoses, perform the initial evaluation, or progress a patient past a written phase criterion. When data show a response outside expectation — for example, a 90-degree shoulder flexion plateau at week 8 post-RCR — the PTA communicates with the supervising PT before altering the program. Documentation should capture objective data (degrees, grade, pain rating) plus the patient's functional limitation.

High-Yield Special Tests by Region

Quick Reference: Capsular Patterns (Cyriax)

Expect the exam to combine these facts in scenario form: a stiff shoulder limited most in lateral rotation points to a capsular pattern (adhesive capsulitis or osteoarthritis), whereas painful resisted wrist extension points to lateral epicondylalgia. Recognizing the pattern lets the PTA select the correct POC-directed intervention and recognize the rare findings — night pain unrelieved by rest, a hard end-feel, or rapidly progressive weakness — that warrant prompt PT communication rather than continued treatment.