A traveler was injured while flying on an Air Inuit Boeing 737-200 from Montreal to La Grand Rivière. The Canadian carrier's flight was facing pitch issues before the injury occurred.
AV Herald reports that the Boeing 737, registration C-GSPW, was performing flight 3H-704 when it suddenly pitched up while at FL340. 35 passengers were on board, along with four members of crew when the incident happened.
Air Inuit followed with an update on the situation. They stated that the autopilot initiated an 'uncommanded climb', which caused the pilot to disconnect the autopilot. This brought the aircraft back to its scheduled flight level but it also caused the plane to jolt.
According to reports, one passenger was injured as a result.

Pitch issues

A sudden change in pitch can occur when the nose of the airplane either raises or lowers too quickly. The pitching motion is controlled by the elevators of an aircraft. If the pitch is raised then the nose ascends while the tail is lowered.

We recently explored Airbus' issues with pitch. After facing issues with the A321neo’s pitch, Airbus and EASA are now dealing with problems with the A320neo. According to an EASA airworthiness directive, simulations identified an issue with the airliner's angle of attack.
Air Inuit, Boeing 737-200

Previous incidents

This incident follows a mid-flight incident that happened last week, which led to 16 people becoming injured. On 20th August, an Evelop Airlines Airbus A330-300 flying from Mauritius to Madrid faced harsh turbulence. About four hours into the flight, as the plane was over Ethiopia, the aircraft rumbled.
Reports state that 11 passengers ignored the seat belt sign when it was turned on. The pilots were aware of an area of turbulence ahead and, prior to arriving in the area, they switched on the seat belt sign. Three members of staff were also hurt in the incident.
This accident occurred at around the same time when four passengers on an All Nippon Airways (ANA) were injured. The crew turned on the fasten seat belt signs just before they encountered the turbulence. However, four injuries still happened on this Boeing 787-8 flight from Tokyo to Beijing .
Earlier this summer, there was another shake in the cabin during a Hong Kong Airlines flight. A crew member suffered serious injuries as a result of turbulence. Thankfully the aircraft went on to make a safe landing in Hong Kong.

Unfortunate circumstances

Airlines look to improve policy regarding pitch issues while doing their best to handle other midflight shake ups. Unforeseen incidents still happen and it is unfortunate for those who get injured in the events.
Air Inuit Boeing 737-200
The Canadian airline issued an apology on the incident on their Facebook page. They also state that one of their flight attendants were also injured.
"As a safety precaution, we wish to remind all passengers to always wear their seat belt when flying on any aircraft," part of the statement read.
"During flight, it is possible that undesirable situations out of the carrier or the pilots’ control may occur at any time.

"We apologize for this unfortunate incident and thank you for your support. We also thank both nurses for their assistance and wish you all safe travels."

The injured party was assisted by two nurses onboard the flight. They were eventually seen by medics once the plane landed safely at La Grande Rivière Airport.