Distal Humerus Fracture (Humeral Palette)
Severe articular fracture of the distal humerus, with bimodal distribution (young/high-energy trauma, elderly/osteoporosis). Major risk of elbow stiffness requiring early and intensive rehabilitation.
Characteristics
Distal humerus fractures (humeral palette) are complex articular fractures representing approximately 2% of all fractures and one-third of humeral fractures [1]. Epidemiological distribution is bimodal: in young patients through high-energy trauma (road accidents, falls from height, sports), and in elderly patients (3:1 female predominance) from standing height falls on osteoporotic bone. The complex anatomy of the humeral palette — consisting of two columns (medial and lateral) supporting the trochlea and capitellum — makes surgical reconstruction demanding.
The therapeutic goal is to restore a congruent articular surface, achieve fixation stable enough for early mobilization, and avoid post-traumatic stiffness which is the most frequent and feared complication. The gold standard treatment is dual plate fixation (one medial, one lateral) following the two-column principle [2]. In very elderly patients with non-reconstructable comminuted fractures, total elbow arthroplasty may be offered as primary treatment.
Neurovascular complications are frequent and must be urgently assessed: the ulnar nerve is most at risk, both from the initial trauma and during surgical approach [3].
- The humeral palette is a complex anatomical structure consisting of two divergent columns (medial and lateral) forming an inverted triangle. The trochlea (medial) articulates with the ulna and the capitellum (lateral) with the radial head. The coronoid fossa anteriorly and olecranon fossa posteriorly significantly thin the bone.
- Mechanism in young patients: high-energy trauma (road accidents, falls from height, contact sports). Mechanism in elderly: fall from standing height on flexed elbow or outstretched hand. Characteristic bimodal distribution with a peak between 12-19 years and a second after 60 years.
- Risk factors: osteoporosis (major factor in elderly patients), sports with fall risk, working at height, history of fractures. Female sex and age over 60 multiply the risk by 3 to 5.
- Complications: joint stiffness (30-50% of cases, most frequent complication), ulnar nerve injury (8-15%), heterotopic ossification (5-10%), supracondylar nonunion, post-traumatic arthritis, complex regional pain syndrome.
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- Type A – Extra-articular
Supracondylar fracture not involving the elbow joint surface. The fracture line is above the trochlea and capitellum. Treatment by plate fixation or pinning. Favorable prognosis as articular congruence is preserved.
- Type B – Partial articular (unicondylar)
Partial articular fracture involving only one condyle (medial or lateral) with an articular fracture line separating a condylar fragment from the rest of the palette. Continuity maintained between the diaphysis and the non-fractured condyle. Fixation by screws or plate of the condylar fragment.
- Type C – Complete articular (bicondylar)
Complete articular fracture with separation of both condyles from each other and from the humeral diaphysis. Subtypes from C1 (simple line) to C3 (major articular comminution). Complex surgery with mandatory dual plate fixation. Highest risk of post-operative stiffness and complications. In elderly patients with C3, total elbow arthroplasty may be preferred.
Medical and Surgical Management
- Dual orthogonal or parallel plate fixation (medial and lateral): gold standard for articular fractures (AO type B and C). Anatomical reconstruction of the articular surface, interfragmentary compression and stable fixation allowing early mobilization from day 2-5.
- Semi-constrained total elbow arthroplasty: indicated in elderly patients (> 65-70 years) with non-reconstructable comminuted fractures (AO type C3) or insufficient bone quality for stable fixation. Allows immediate mobilization. Lifetime weight-bearing limit of 5 kg.
- Systematic ulnar nerve monitoring: risk of intraoperative injury 8-15%. Anterior subcutaneous or submuscular transposition during surgery if nerve is in conflict. Neurolysis if post-operative ulnar neuropathy.
Physiotherapy treatment
- Early mobilization from day 2-5 after stable dual plate fixation. Gentle active flexion-extension within pain-free range. The elbow is the joint that tolerates prolonged immobilization the least: each day lost worsens stiffness.
- Early active forearm rotation, often minimally limited unless associated radial head fracture. Rotation exercises with dowel rod. Mobilization of proximal and distal radioulnar joints.
- Prevention of heterotopic ossification: strictly gentle and active mobilizations, NEVER forced passive manipulation or aggressive stretching. Indomethacin (75 mg/day for 6 weeks) or prophylactic irradiation may be prescribed for prevention.
- Alternating static progressive orthosis: extension posturing during the day (3×30 min), flexion posturing at night, to progressively gain joint range of motion. Delayed muscle strengthening from week 6-8 (isometric then concentric).
After the session
You may feel slight fatigue or tightness: this is normal. Continue the exercises taught at home to maintain session benefits.
Questions About Elbow Rehabilitation
When should I start physiotherapy after elbow surgery?
Rehabilitation generally begins between 3 and 21 days after the operation, depending on the type of procedure and the stability of the surgical fixation. For fractures treated with stable internal fixation (screw plate), early mobilization is often authorized from D+3 to D+5 to prevent joint stiffness. In cases of elbow replacement or complex ligament repair, the delay may be extended to 2-3 weeks with initial immobilization in a splint. A systematic review published in the Journal of Shoulder and Elbow Surgery confirms that early mobilization after elbow surgery significantly improves final range of motion without increasing the risk of complications [Hackl et al., 2023] . Your surgeon will advise the optimal timing based on your specific procedure.
What are the goals of elbow rehabilitation?
Elbow rehabilitation pursues several complementary goals, adapted to each phase of recovery. In the initial phase (0-6 weeks), the priority is to restore range of motion in flexion-extension (goal: 30°-130° minimum for daily activities) and in pronation-supination (50° in each direction minimum). In the intermediate phase (6-12 weeks), the focus is on progressive muscle strengthening of the flexors, extensors and rotators of the forearm, as well as restoring joint stability through proprioceptive exercises. In the advanced phase (3-6 months), the emphasis is on functional reintegration: daily activities, work tasks and return to sports. Scientific literature highlights that the minimum functional arc of the elbow (30°-130° of flexion-extension, 50° of pronation and 50° of supination) is necessary to perform 90% of daily activities [Mofidi et al., 2020] . Scar treatment and adhesion prevention complete this comprehensive care approach.
Is elbow rehabilitation painful?
The techniques used are progressive and adapted to your tolerance. The elbow is a joint particularly prone to stiffness and inflammatory reactions: overly aggressive rehabilitation can paradoxically worsen the situation by causing heterotopic ossifications (abnormal bone formations in soft tissues). Exercises must be regular but never forced . The physiotherapist always adapts the intensity to stay below the pain threshold, following the "no pain, more gain" rule specific to the elbow. Gentle, regular active mobilization spread across the day in short sequences is generally preferred to prevent stiffness, with early active mobilization recommended after an elbow injury [Akhtar et al., 2021] . Complementary techniques such as cryotherapy , microcurrents and Novafon vibration therapy also help control pain during sessions.
Scientific sources
Average duration
12 to 24 weeks of active rehabilitation, risk of residual stiffness up to 12 months