Although the exact cause of Panner Disease is unknown, in recent research, it has been concluded that it may be associated with frequent throwing or other athletic activity. In the same article that talks about varying osteochondrosis diseases, it is pointed out that Panner Disease always involves alteration of the capitellum, which can be visualized by radiography. In another research article, the research team aimed to summarize the best available evidence for diagnosis and treatment for Panner Disease. In the article it was found that the most common symptoms that patients with Panner Disease present with are elbow stiffness and swelling, limited range of motion, and limited elbow extension. In alignment with the previously mentioned article, the team of researchers also concluded that Panner Disease involves irregularity of the capitellum, specifically that it appears flattened. Panner Disease often gets misdiagnosed as osteochondritis dissecans (OCD), and in this article they distinguish the difference between the two diseases are age difference and radiographic findings. In alignment with the two previously discussed articles, another article that reports on three case studies of Panner Disease, states that the primary treatment that is used for Panner Disease is rest and restriction from all physical and athletic activity that involves the use of the upper extremities; the activity is suggested to be ceased until the symptoms are relieved.

Being an extremely rare disease, it is unknown as to what exactly causes Panner Disease. It is believed that the disease may be brought on by continuous overuse of the elbow and that puts pressure on the elbow and also strains the elbow in children during the period of rapid bone growth. The overuse of the elbow can be due to the involvement in sports such as baseball, handball, and gymnastics where these sports involve throwing or putting a lot of pressure on the joints. These repeated activities cause microtraumas and results in the affected elbow being swollen, irritated, and in pain. Panner Disease results when the blood supply to the capitellum is disrupted and therefore the cells within the growth plate of the capitellum die and it becomes flat due to the softening and collapsing of the surrounding bone. To prevent future instances of Panner Disease the child is instructed to cease all physical and sports activities that involve the use of the affected elbow until the symptoms are relieved.

The goals of treatment are to decrease pain, reduce the loss of hip motion, and prevent or minimize permanent femoral head deformity so that the risk of developing a severe degenerative arthritis as adult can be reduced. Assessment by a pediatric orthopaedic surgeon is recommended to evaluate risks and treatment options. Younger children have a better prognosis than older children.

Treatment has historically centered on removing mechanical pressure from the joint until the disease has run its course. Options include traction (to separate the femur from the pelvis and reduce wear), braces (often for several months, with an average of 18 months) to restore range of motion, physiotherapy, and surgical intervention when necessary because of permanent joint damage. To maintain activities of daily living, custom orthotics may be used. Overnight traction may be used in lieu of walking devices or in combination. These devices internally rotate the femoral head and abduct the leg(s) at 45°. Orthoses can start as proximal as the lumbar spine, and extend the length of the limbs to the floor. Most functional bracing is achieved using a waist belt and thigh cuffs derived from the Scottish-Rite orthosis. These devices are typically prescribed by a physician and implemented by an orthotist. Clinical results of the Scottish Rite orthosis have not been good according to some studies, and its use has gone out of favor. Many children, especially those with the onset of the disease before age 6, need no intervention at all and are simply asked to refrain from contact sports or games which impact the hip. For older children (onset of Perthes after age 6), the best treatment option remains unclear. Current treatment options for older children over age 8 include prolonged periods without weight bearing, osteotomy (femoral, pelvic, or shelf), and the hip distraction method using an external fixator which relieves the hip from carrying the body's weight. This allows room for the top of the femur to regrow. The Perthes Association has a "library" of equipment which can be borrowed to assist with keeping life as normal as possible, newsletters, a helpline, and events for the families to help children and parents to feel less isolated.

While running and high-impact sports are not recommended during treatment for Perthes disease, children can remain active through a variety of other activities that limit mechanical stress on the hip joint. Swimming is highly recommended, as it allows exercise of the hip muscles with full range of motion while reducing the stress to a minimum. Cycling is another good option as it also keeps stress to a minimum. Physiotherapy generally involves a series of daily exercises, with weekly meetings with a physiotherapist to monitor progress. These exercises focus on improving and maintaining a full range of motion of the femur within the hip socket. Performing these exercises during the healing process is essential to ensure that the femur and hip socket have a perfectly smooth interface. This will minimize the long-term effects of the disease. Use of bisphosphonate such as zoledronate or ibandronate is currently being investigated, but definite recommendations are not yet available.

Perthes disease is self-limiting, but if the head of femur is left deformed, long-term problems can occur. Treatment is aimed at minimizing damage while the disease runs its course, not at 'curing' the disease. It is recommended not to use steroids or alcohol as these reduce oxygen in the blood which is needed in the joint. As sufferers age, problems in the knee and back can arise secondary to abnormal posture and stride adopted to protect the affected joint. The condition is also linked to arthritis of the hip, though this appears not to be an inevitable consequence. Hip replacements are relatively common as the already damaged hip suffers routine wear; this varies by individual, but generally is required any time after age 50.

Children younger than 6 have the best prognosis, since they have time for the dead bone to revascularize and remodel, with a good chance that the femoral head will recover and remain spherical after resolution of the disease. Children who have been diagnosed with Perthes' disease after the age of 10 are at a very high risk of developing osteoarthritis and coxa magna. When an LCP disease diagnosis occurs after age 8, a better outcome results with surgery rather than nonoperative treatments. Shape of femoral head at the time when Legg-Calve Perthes disease heals is the most important determinant of risk for degenerative arthritis; hence, the shape of femoral head and congruence of hip are most useful outcome measures.

The Orthopedic Foundation for Animals in the United States will grade elbow X-rays of dogs intended for breeding.

In a recent comparative orthopedic study, a new bioscaffold having an embryonic-like structure has shown positive clinical outcomes in dogs with advanced, end stage osteoarthritis. The bioscaffold was implanted into intra-articular areas and reported up to 90-days of clinical improvement after a single implant. The bioscaffold has been shown to cause infiltrating cells to upregulate a variety of tissue repair factors including aggrecan, connective tissue growth factor, bone morphogenetic protein, transforming growth factors, and other tissue repair factors associated with osteoarthritis TR BioSurgical, LLC.

A cubitus varus deformity is more cosmetic than limiting of any function, however internal rotation of the radius over the ulna may be limited due to the overgrowth of the humerus. This may be noticeable during an activity such as using a computer mouse.

The incidence of Hill–Sachs lesion is not known with certainty. It has been reported to be present in 40% to 90% of patients presenting with anterior shoulder instability, that is subluxation or dislocation. In those who have recurrent events, it may be as high as 100%. Its presence is a specific sign of dislocation and can thus be used as an indicator that dislocation has occurred even if the joint has since regained its normal alignment. The average depth of Hill–Sachs lesion has been reported as 4.1 mm. Large, engaging Hill-Sachs fractures can contribute to shoulder instability and will often cause painful clicking, catching, or popping.

Prevention of the condition requires restoration of blood flow after injury and reduction of compartmental pressure on the muscles. Any splints, bandages, or other devices that might be obstructing circulation must be removed. A fasciotomy may be required to reduce pressure in the muscle compartment. If the contracture occurs, surgery to release the fixed tissues may help with the deformity and function of the hand.

To resolve the problem, the affected arm is moved in a way that causes the joint to move back into a normal position. The two main methods are hyperpronation and a combination of supination and flexion. Hyperpronation has a higher success rate and is less painful than a supination-flexion maneuver.

Non-specific treatments include:

- Non-steroidal anti-inflammatory drugs (NSAIDs): ibuprofen, naproxen or aspirin

- Heat or ice

- A counter-force brace or "elbow strap" to reduce strain at the elbow epicondyle, to limit pain provocation and to protect against further damage.

Before anesthetics and steroids are used, conservative treatment with an occupational therapist may be attempted. Before therapy can commence, treatment such as the common rest, ice, compression and elevation (R.I.C.E.) will typically be used. This will help to decrease the pain and inflammation; rest will alleviate discomfort because golfer's elbow is an overuse injury. The patient can use a tennis elbow splint for compression. A pad can be placed anteromedially on the proximal forearm. The splint is made in 30–45 degrees of elbow flexion. A daytime elbow pad also may be useful, by limiting additional trauma to the nerve.

Therapy will include a variety of exercises for muscle/tendon reconditioning, starting with stretching and gradual strengthening of the flexor-pronator muscles. Strengthening will slowly begin with isometrics and progresses to eccentric exercises helping to extend the range of motion back to where it once was. After the strengthening exercises, it is common for the patient to ice the area.

Simple analgesic medication has a place, as does more specific treatment with oral anti-inflammatory medications (NSAIDs). These will help control pain and any inflammation. A more invasive treatment is the injection into and around the inflamed and tender area of a long-acting glucocorticoid (steroid) agent. After causing an initial exacerbation of symptoms lasting 24 to 48 hours, this may produce an improvement of the condition in some five to seven days.

The ulnar nerve runs in the groove between the medial humeral epicondyle and the olecranon process of the ulna. It is most important that this nerve should not be damaged accidentally in the process of injecting a golfer's elbow.

If all else fails, epicondylar debridement (a surgery) may be effective. The ulnar nerve may also be decompressed surgically.

If the appropriate remediation steps are taken - rest, ice, and rehabilitative exercise and stretching - recovery may follow. Few patients will need to progress to steroid injection, and less than 10% will require surgical intervention.

Impingement syndrome is usually treated conservatively, but sometimes it is treated with arthroscopic surgery or open surgery. Conservative treatment includes rest, cessation of painful activity, and physical therapy. Physical therapy treatments would typically focus at maintaining range of movement, improving posture, strengthening shoulder muscles, and reduction of pain. Physical therapists may employ the following treatment techniques to improve pain and function: joint mobilization, interferential therapy, accupuncture, soft tissue therapy, therapeutic taping, rotator cuff strengthening, and education regarding the cause and mechanism of the condition. NSAIDs and ice packs may be used for pain relief.

Therapeutic injections of corticosteroid and local anaesthetic may be used for persistent impingement syndrome. The total number of injections is generally limited to three due to possible side effects from the corticosteroid. A recent systematic review of level one evidence, showed corticoestroid injections only give small and transient pain relief.

A number of surgical interventions are available, depending on the nature and location of the pathology. Surgery may be done arthroscopically or as open surgery. The impinging structures may be removed in surgery, and the subacromial space may be widened by resection of the distal clavicle and excision of osteophytes on the under-surface of the acromioclavicular joint. Damaged rotator cuff muscles can be surgically repaired.

The disease can be treated with external in-situ pinning or open reduction and pinning. Consultation with an orthopaedic surgeon is necessary to repair this problem. Pinning the unaffected side prophylactically is not recommended for most patients, but may be appropriate if a second SCFE is very likely.

Once SCFE is suspected, the patient should be non-weight bearing and remain on strict bed rest. In severe cases, after enough rest the patient may require physical therapy to regain strength and movement back to the leg. A SCFE is an orthopaedic emergency, as further slippage may result in occlusion of the blood supply and avascular necrosis (risk of 25 percent). Almost all cases require surgery, which usually involves the placement of one or two pins into the femoral head to prevent further slippage. The recommended screw placement is in the center of the epiphysis and perpendicular to the physis. Chances of a slippage occurring in the other hip are 20 percent within 18 months of diagnosis of the first slippage and consequently the opposite unaffected femur may also require pinning.

The risk of reducing this fracture includes the disruption of the blood supply to the bone. It has been shown in the past that attempts to correct the slippage by moving the head back into its correct position can cause the bone to die. Therefore the head of the femur is usually pinned 'as is'. A small incision is made in the outer side of the upper thigh and metal pins are placed through the femoral neck and into the head of the femur. A dressing covers the wound.

Accidental or deliberate physical trauma may result in either a fracture, muscle bruising, or a contusion. It is the leading cause of a limp. Deliberate abuse is important to consider.

In cases of a minor deviation of the wrist, treatment by splinting and stretching alone may be a sufficient approach in treating the radial deviation in RD. Besides that, the parent can support this treatment by performing passive exercises of the hand. This will help to stretch the wrist and also possibly correct any extension contracture of the elbow. Furthermore, splinting is used as a postoperative measure trying to avoid a relapse of the radial deviation.

Cubitus varus is not able to be diagnosed until after healing of the prior fracture, as the arm must be in full extension, not flexion, for the deformity to be noticed.

The decisions involved in the repair of the Hill–Sachs lesion are complex. First, it is not repaired simply because of its existence, but because of its association with continuing symptoms and instability. This may be of greatest importance in the under-25-year-old and in the athlete involved in throwing activities. The Hill-Sachs role in continuing symptoms, in turn, may be related to its size and large lesions, particularly if involving greater than 20% of the articular surface, may impinge on the glenoid fossa (engage), promoting further episodes of instability or even dislocation. Also, it is a fracture, and associated bony lesions or fractures may coexist in the glenoid, such as the so-called bony Bankart lesion. Consequently, its operative treatment may include some form of bony augmentation, such as the Latarjet or similar procedure. Finally, there is no guarantee that associated non-bony lesions, such as a Bankart lesion, SLAP tear, or biceps tendon injury, may not be present and require intervention.

Olecranon fractures are rare in children, constituting only 5 to 7% of all elbow fractures. This is because in early life, olecranon is thick, short and much stronger than the lower extremity of the humerus.

However, olecranon fractures are a common injury in adults. This is partly due to its exposed position on the point of the elbow.

In general, SCFE is caused by increased force applied across the epiphysis, or a decrease in the resistance within the physis to shearing. No single cause accounts for SCFEs, as several factors play a role in the development of a SCFE, particularly mechanical and endocrine (hormone-related) factors. Mechanical risk factors include obesity, coxa profunda, femoral or acetabular retroversion. Obesity is the most significant risk factor. In 65 percent of cases of SCFE, the person is over the 95th percentile for weight. Common misconception is heredity. Majority of cause is due to being overweight. Endocrine diseases also contribute, such as hypothyroidism, hypopituitarism, and renal osteodystrophy.

A limp is a type of asymmetric abnormality of the gait. Limping may be caused by pain, weakness, neuromuscular imbalance, or a skeletal deformity. The most common underlying cause of a painful limp is physical trauma; however, in the absence of trauma, other serious causes, such as septic arthritis or slipped capital femoral epiphysis, may be present. The diagnostic approach involves ruling out potentially serious causes via the use of X-rays, blood tests, and sometimes joint aspiration. Initial treatment involves pain management. A limp is the presenting problem in about 4% of children who visit hospital emergency departments.

Metallosis is the putative medical condition involving deposition and build-up of metal debris in the soft tissues of the body.

Metallosis has been hypothesized to occur when metallic components in medical implants, specifically joint replacements, abrade against one another.

Metallosis has also been observed in some patients either sensitive to the implant or for unknown reasons even in the absence of malpositioned prosthesis. Though rare, metallosis has been observed at an estimated incidence of 5% of metal joint implant patients over the last 40 years. Women may be at slightly higher risk than men. If metallosis occurs, it may involve the hip and knee joints, the shoulder, wrist, or elbow joints.

The abrasion of metal components may cause metal ions to be solubilized. The hypothesis that the immune system identifies the metal ions as foreign bodies and inflames the area around the debris may be incorrect because of the small size of metal ions may prevent them from becoming haptens. Poisoning from metallosis is rare, but cobaltism is an established health concern. The involvement of the immune system in this putative condition has also been theorized but has never been proven.

Purported symptoms of metallosis generally include pain around the site of the implant, pseudotumors (a mass of inflamed cells that resembles a tumor but is actually collected fluids), and a noticeable rash that indicates necrosis. The damaged and inflamed tissue can also contribute to loosening the implant or medical device. Metallosis can cause dislocation of non-cemented implants as the healthy tissue that would normally hold the implant in place is weakened or destroyed. Metallosis has been demonstrated to cause osteolysis.

Women, those who are small in stature, and the obese are at greater risk for metallosis because their body structure causes more tension on the implant, quickening the abrasion of the metal components and the subsequent build-up of metallic debris.

Supracondylar humerus fractures account for 55%-75% of all elbow fractures. They most commonly occur in children between ages 5–8, because remodeling of bone in this age group causes a decreased supracondylar anteroposterior diameter.

This method is indicated for cases when open reduction and internal fixation is unlikely to be successful. For example: extensive comminutions, elderly patients with osteoporotic bone, and small or non-union fractures.

More severe types (Bayne type III en IV) of radial dysplasia can be treated with surgical intervention. The main goal of centralization is to increase hand function by positioning the hand over the distal ulna, and stabilizing the wrist in straight position. Splinting or soft-tissue distraction may be used preceding the centralization.

In classic centralization central portions of the carpus are removed to create a notch for placement of the ulna. A different approach is to place the metacarpal of the middle finger in line with the ulna with a fixation pin.

If radial tissues are still too short after soft-tissue stretching, soft tissue release and different approaches for manipulation of the forearm bones may be used to enable the placement of the hand onto the ulna. Possible approaches are shortening of the ulna by resection of a segment, or removing carpal bones. If the ulna is significantly bent, osteotomy may be needed to straighten the ulna. After placing the wrist in the correct position, radial wrist extensors are transferred to the extensor carpi ulnaris tendon, to help stabilize the wrist in straight position. If the thumb or its carpometacarpal joint is absent, centralization can be followed by pollicization. Postoperatively, a long arm plaster splinter has to be worn for at least 6 to 8 weeks. A removable splint is often worn for a long period of time.

Radial angulation of the hand enables patients with stiff elbows to reach their mouth for feeding; therefore treatment is contraindicated in cases of extension contracture of the elbow. A risk of centralization is that the procedure may cause injury to the ulnar physis, leading to early epiphyseal arrest of the ulna, and thereby resulting in an even shorter forearm. Sestero et al. reported that ulnar growth after centralization reaches from 48% to 58% of normal ulnar length, while ulnar growth in untreated patients reaches 64% of normal ulnar length. Several reviews note that centralization can only partially correct radial deviation of the wrist and that studies with longterm follow-up show relapse of radial deviation.

A pulled elbow, also known as a radial head subluxation, is when the ligament that wraps around the radial head slips off. Often a child will hold their arm against their body with the elbow slightly bent. They will not move the arm as this results in pain. Touching the arm, without moving the elbow, is usually not painful.

A pulled elbow typically results from a sudden pull on an extended arm. This may occur when lifting or swinging a child by the arms. The underlying mechanism involves slippage of the annular ligament off of the head of the radius followed by the ligament getting stuck between the radius and humerus. Diagnosis is often based on symptoms. Xrays may be done to rule out other problems.

Prevention is by avoiding potential causes. Treatment is by reduction. Moving the forearm into a palms down position with straitening at the elbow appears to be more effect than moving it into a palms up position followed by bending at the elbow. Following a successful reduction the child should return to normal within a few minutes. A pulled elbow is common. It generally occurs in children between the ages of 1 and 4 years old, though it can happen up to 7 years old.